Many facilities have processes that deal with dangerous gasses and chemicals that could leak under accidental or abnormal process conditions. A layer of protection or alarm system typically referred to as a Safety Instrumented System needs to be implemented in order to protect personnel and the environment.

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Protect personnel and the environment with the STA Functional Safety Trip Alarm as your Safety Instrumented System logic solver by monitoring the gas levels and shutting down the process when a leak or abnormal process disruption takes occurs. The STA is simple to program and has an auxiliary analog output for retransmission to a separate host system. The STA is SIL 2/3 capable, approved by exida and rated Class I Div 2/Zone 2.

Key attributes:

• SIL 2/3 capable and exida approved
• Easy programming
• Class I Div 2/Zone 2 approval and local display

Many manufacturing facilities have many process loops where a bank of displays or panel meters are needed for installation in control rooms or in remote cabinets.

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When a panel meter display is required, consider the Nema 4X 330R 1/8 DIN Process Display and Panel Meter.  The 330R has a large 4 digit LED display and accepts all T/Cs, RTDs, mA, V and millivolt inputs.  The unit is powered with any voltage between 90-250VAC and is to program through the front pushbuttons and easy to navigate the menu. The 330R has additional options that include analog retransmission, two SPDT alarms and a loop power supply to power a two-wire instrument that is tied to its input.

Key Attributes:

• Easy to program and large 4 digits LED display
• NEMA 4X front and universal AC power supply
• Options include: Two alarms, analog retransmission and loop power supply

Manufacturing facilities often have many process loops where the transmitter’s local display is either remote or not at eye level. 

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When loops require local indication for operations or plant personnel, consider the Nema 4X SPD PC Programmable Loop Display that only consumes 2.3 volts. The SPD is a loop powered or line powered (unit with alarms) indicator with a full five digits for process variable and engineering units (EGU) readout. The SPD has an optional backlit LCD and two SPDT alarms. 

Key Attributes:

• Large loop display that is easy to program with free software
• Worldwide hazardous area approvals
• Backlit LCD and two alarms optional

Manufacturing facilities have many process loops where the transmitter’s local display is either remote or not at eye level. 

Download the PDF file

When loops require local indication for operations or plant personnel, consider the PSD PC Programmable Loop Display. The PSD is a loop powered indicator with a full five digits for process variable and engineering units (EGU) readout.  A loop maintenance diode option is available that allows the removal of the PSD from the loop without disrupting or breaking the current loop.  The PSD is PC programmable with free easy to use software and even allows a 128 point custom curve creation for non-linear signals.

Key Attributes:

• Easy to program with free software
• Worldwide hazardous area approvals
• Loop maintenance diode allows removal of PSD from loop with no effect

Industrial compressors are often used in large facilities to supply headers with air for pneumatic instruments and valves.  These compressors have to run at precise speeds.  If these compressors start to run too fast they can become very dangerous and expensive to repair. 

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If you have compressors or rotating equipment that is critical enough to require a Safety Instrumented System, consider the Functional Safety SFY PC Programmable Frequency-to-DC Converter.  The SFY is an exida approved SIL 3 capable frequency-to-DC transmitter that monitors frequency, period, high or low pulse width, and contact closure signals and converts it to a linear and isolated 4-20mA signal.  The two-wire loop powered SFY has worldwide hazardous areas approvals and sets up in just a few minutes with easy to use PC programming software.

Key Attributes:

• exida approved SIL 3 capable
• Local display and Free PC programming software
• Worldwide hazardous area approvals

Many manufacturing facilities have several critical points of temperature that has to be monitored.  Some of these are so critical that they are part of a Safety Instrumented System (SIS). 

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When these critical SIS temperature measurement needs arise, consider the Functional Safety STZ Smart HART Dual Input Temperature Transmitter for your Safety Instrumented Functions (SIF).  The STZ is an exida approved SIL 3 capable temperature transmitter featuring dual sensor input capability that allows for failover or backup mode when primary sensors fail.   The STZ transmitter family can be HART or DTM programmed and carries worldwide approvals.

Key Attributes:

• exida approved SIL 3 capable temperature transmitter
• Backup or Failover mode on a primary sensor failure
• HART or DTM programmable with worldwide hazardous area approvals

Many processes require critical cooling water lines for in-line process operations or for emergency cooling.  If a process doesn’t get the required cooling water or a process temperature cannot be lowered quickly enough, layers of protection have to be put in place.

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Due to the dangerous nature of these types of situations, Safety Instrumented Systems (SIS) are often implemented.  Often these flow rates are also monitored by the Basic Process Control System (BPCS) too.  When this is a requirement, look to the Functional Safety Series SST Safety Splitter.  The four-wire SST is an exida approved SIL 2 capable signal splitter, with Class I Div 2/Zone 2 approval, that sends your critical process signal to two remote locations.  The SST also passes valuable HART diagnostic and process variable data through the SST in case asset managers need to view calibration or other essential diagnostic data from the field transmitter.

Key Attributes:

• exida approved and Class I Div 2/Zone 2, SIL 2 capable for SIS loops
• Full four way isolation up to 500Vrms between power and all input/outputs
• Passes critical HART data from field transmitter

Many manufacturing facilities and operations have critical monitoring areas like high pressure steam lines that if not monitored closely could cause serious injury to personnel and process equipment.  Often Safety Instrumented Systems (SIS) are put into place after HAZOP studies. 

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If the SIS is implemented consider looking to the SSX Functional Safety Signal Isolator.  The SSX is an exida approved SIL 3 capable isolator with HART pass-through capability.  The SSX allows you to share that critical process variable, whether steam or temperature, with both your SIS logic solver and your Basic Process Control System or Asset Manager.  This affords you the protection and added safety by not having to worry about losing your primary safety loop when you work on your secondary BPCS-side loop.

Key attributes:

• SSX is exida approved and SIL 3 capable
• Class I Div 2/Zone 2 approvals
• HART pass-through allows critical signals to be shared with asset manager

Upstream oil and gas, mining, and metal processing operations and food and beverage facilities oftentimes have processes that deal with critical pressures that could spike during abnormal process conditions. A layer of protection or alarm system typically referred to as a Safety Instrumented System needs to be implemented in order to protect personnel and the process.

Download the PDF file

Protect personnel and your process with the STA Functional Safety Trip Alarm as your Safety Instrumented System logic solver by monitoring pressure levels and shutting down the process when a spike or abnormal process disruption takes occurs. The STA is simple to program and has an auxiliary analog output for retransmission to a separate host system.   The STA is SIL 2/3 capable, approved by exida and rated Class I Div 2/Zone 2.

Key attributes:

• SIL 2/3 capable and exida approved
• Easy programming
• Class I Div 2/Zone 2 approval and local display

Most manufacturing operations are full of HART smart instruments.  Often there are additional process variables from these HART devices that are being measured but simply can’t be monitored because the field device only has one 4-20mA output.  If the DCS or BPCS is HART capable then these hosts could poll these smart HART instruments for this additional diagnostic and process data. Unfortunately upgrading older input cards or legacy control systems to be HART smart compatible can be quite expensive.

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When this condition exists, utilize the Class I Div 2/Zone 2 approved HIM HART Interface Module.  The HIM has the ability to poll any HART smart device and turn its digital HART process measurement data into 4-20mA signals (up to three) for retransmission to any host.  In addition the HIM has optional alarm relays (up to two) that can be used to alarm on anything from diagnostic bits, transmitter status to process variable limits.  The HIM is even multi-drop capable with an optional MODBUS RTU output that allows a remote MODBUS RTU host to poll it for the field transmitter’s HART variables; thus turning the HIM into an industrial HART-to-MODBUS gateway. 

Key Attributes:

• HART to Analog Conversion: up to three AOs and two relay alarms
• Local display
• Class I Div 2/Zone 2 approval

Most process facilities have a lot of valves controlling chemical feedstock, finished product, steam and water. The top works (actuators) are being upgraded on most valves to include a smart HART positioner.  These positioners offer tighter control and provide a lot more diagnostic and process data.

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If your facility has smart HART positioners on valves, and you would like an efficient way to monitor these valves at a central monitoring location, consider the HCS HART Concentrator System.  The HCS is HART-to-MODBUS RTU gateway that can be multi-dropped throughout your facility on one twisted pair and connected to a central MODBUS RTU host or SCADA system.  The HCS is a HART master and polls the smart HART positioner for its process variable data points, such as stem position, stroke percentage, temperature, set point and diagnostic bits that warn of potential trouble.  This HART data is then mapped to MODBUS RTU so it can be polled remotely by a MODBUS host.  Each HCS can have up to 16 smart HART devices attached to it.

Key Attributes:

• Queries smart HART device for process data and diagnostics
• Converts HART data to MODBUS RTU
• Polls up to 16 HART devices per HCS

There many HART smart instruments installed throughout all manufacturing facilities, many of which are multivariable instruments which have additional process variables that are available via the HART signal.

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When you need access to these additional HART variables and diagnostic data, but don’t have a HART based DCS or asset manager, consider the HCS HART Concentrator System. The HCS polls between one and 16 HART smart instruments on one twisted pair and maps all of the process variable and diagnostic data to an internal MODBUS memory map. This then allows the HCS to be polled by a MODBUS RTU host making all of the HART data available. The HCS is approved for installation in Class I Div 2/Zone 2 areas and supports both RS-232 and RS-485 physical layer networks. The HCS is configuring via a free Windows PC program and sets up in just a few minutes.

Key Attributes:

• Polls between one and 16 HART instruments and converts data to MODBUS RTU
• Class I Div 2/Zone 2 approval
• -40 to 85C ambient operating temperature

There many HART smart instruments installed throughout all manufacturing facilities, many of which are multivariable instruments which have additional process variables that are available via the HART signal.

Download the PDF file

When you need access to these additional HART variables and diagnostic data, but don’t have a HART based DCS or asset manager, consider the HIM HART Interface Module. The HIM polls any HART compatible instrument and allows you to break out any HART dynamic variable or diagnostic bit and covert it to a 4-20mA signal or alarm, respectively.  The HIM allows you to retransmit up to three dynamic HART variables and gives you one or two alarms that can be tied to most any diagnostic bit or dynamic variable. Additionally, the HIM has redundant MODBUST RTU outputs optional. The HIM is approved for installation in Class I Div 2/Zone 2 areas and is configured via a free Windows PC program and sets up in just a few minutes.

Key Attributes:

• Polls any HART instrument and breaks out additional HART variables and diagnostics
• Class I Div 2/Zone 2 approval
• -40 to 85C ambient operating temperature

Most process facilities have critical measurement variables like the pressure that if not monitored closely could cause serious injury to personnel.  Often these critical signals need to be shared with other control devices and wiring them in series with one another is not always a good idea since a failure at one receiving device renders the loop open, or in a failed state.

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If you have critical loops like these consider looking to the HIX HART Signal Isolator.  The HIX is a rugged and reliable two-wire, output loop powered isolator with HART pass-through capability.  The HIX allows you to share that critical process variable, and any valuable HART data, with both your primary control system and your backup controller.  This affords you the protection and added safety by not having to worry about losing your primary control loop when you work on your secondary backup-side loop, and vice versa. 

Key attributes:

• HIX provides area isolation and follows failed inputs down below 3mA
• Class I Div 2/Zone 2 approvals
• HART pass-through allows critical signals to be shared with the backup system

Most processing facilities have large basic process control systems that control and monitor most of the plants.  However, there are other silos of control and monitoring by PLC systems that come with other critical or specialized machinery. 

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In situations where these key process signals need to be shared between these systems, turn to the ECT Signal Splitter.  The Class I Div 2/Zone 2 ECT DIN splitters accept one input and outputs two identically isolated outputs to each of the two process systems. This allows either system to be taken out of the loop without affecting the availability of the other loop.  Since the ECT splitter is a four wire unit, it has an optional input loop power supply that can be used to power the connected transmitter.

Key Attributes:

• Full four way isolation up to 500Vrms between power and all input/outputs
• RFI/EMI resistant and hardened aluminum case
• Zero and span potentiometers for onsite calibration

Many process facilities have several points of temperature that have to be monitored.  Many of these measurements utilize three wire RTDs with long extension wires.  Corrosion can cause
a significant amount of error in these three wire circuits. 

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For those cases, the TDZ3/THZ3 Smart HART Dual Input Temperature transmitters have corrosion detection capability to warn you when corrosion build up is causing measurement error.  The THZ3/TDZ3 transmitter family can be HART or DTM programmed and carries worldwide approvals. 

Key Attributes:

• Advanced sensor diagnostics – Corrosion detection for RTD measurements
• HART or DTM programmable
• Worldwide hazardous area approvals

Many process facilities have several points of temperature that have to be monitored.  Many of these measurements utilize redundant or dual element RTDs and require exceptional accuracy and repeatability.

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For instances where two elements are used, the TDZ3/THZ3 Smart HART Dual Input Temperature transmitters have sensor drift alert detection capability to warn you when one sensor has started to drift from the other.  This is particularly useful in applications that demand an accurate and repeatable secondary sensor. The THZ3/TDZ3 transmitter family can be HART or DTM programmed and carries worldwide approvals. 

Key Attributes:

• Advanced sensor diagnostics – Sensor drift detection for RTD or T/C measurements
• HART or DTM programmable
• Worldwide hazardous area approvals

Many process operations have processes that require tight pressure control.  Some processes are too critical to rely on just one pressure transmitter, since a transmitter failure could cause a nuisance or spurious trip or process upset. Furthermore, not all of these situations are in close proximity to a DCS.

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Instead of considering a sophisticated PLC and additional pressure transmitters, consider utilizing a 2oo3 voting scheme with SPA2 Site Programmable Alarm Trips by wiring their relays in a shutdown or alarm circuit scheme.  It is very easy to program vs a PLC and its SPDT relays are rated at 5A 250VAC/24DC.  The SPA2 is approved for installation in Class I Div 2/Zone 2 locations and is push button or PC programmable with quick and easy to use menus.  Each SPA2 has a local display and an optional 4-20mA retransmission.

Key attributes:

• Simple 2oo3 voting configuration
• Easy programming
• Class I Div 2/Zone 2 approval and local display

Process operations and sites have several points of temperature that have to be monitored.  Many of these measurements utilize thermocouples. When thermocouples fail or burnout they normally go open circuit due to any number of processes or environmental issues.  

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In an effort to catch these thermocouples before they fail, look to the TDZ3/THZ3 Smart HART Dual Input Temperature transmitters that have corrosion detection capability for thermocouples to warn you when the resistance in the thermocouple circuit is stating to increase, that is usually an early indication of a pending element failure.  The THZ3/TDZ3 transmitter family can be HART or DTM programmed and carries worldwide approvals. 

Key Attributes:

• Advanced sensor diagnostics – Corrosion detection/burnout indication for thermocouples
• HART or DTM programmable
• Worldwide hazardous area approvals

Refineries and extraction sites rely on flare stacks to handle unexpected process releases and upsets when they occur. The EPA requires that these VOCs be burned off.  If the flare stack burns out it could lead to volatile compounds being released into the atmosphere and could lead to a costly shutdown. 

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Instead of relying on one T/C and a sophisticated PLC, consider utilizing a 2oo3 voting scheme with SPA2 Site Programmable Alarm Trips.  The SPA2 is approved for installation in Class I Div 2/Zone 2 locations and is push button or PC programmable with quick and easy to use menus.  Each SPA2 has a local display and an optional 4-20mA retransmission.

Key attributes:

• Simple 2oo3 voting configuration
• Easy programming
• Class I Div 2/Zone 2 approval and local display

Many facilities sometimes have a block of temperatures that need to be monitored in a central location. 

 Download the PDF file

You can reduce the expense of installing individual field transmitters by installing DIN rail temperature transmitters in the field, close to the process, and running shielded twisted pair back to the DCS or BPCS. The Class I Div 2/Zone 2 approved THZ3 Smart HART Dual Input Temperature Transmitter is a highly accurate and repeatable DIN rail temperature transmitter with advanced diagnostics. If your control system’s input cards can read HART, you can further reduce your measurement cost per point by bringing two sensors to each THZ3 and reading the PV and SV dynamic HART variables, which represent Sensor 1 and Sensor 2 respectively.

Key Attributes:

• Class I Div 2/Zone 2 approved DIN version of THZ3
• Dual input capability may reduce cost per point
• High ambient operating temperature range of -40 to 85C (-40 to 185F)

Selecting Smart Temperature Transmitters for General, Hazardous and Process Safety Applications IPP&T (Canada) October, 2019

For many applications, the temperature of a process needs to be monitored by temperature transmitters. Selecting and installing temperature transmitters for an application can be a difficult task, taking into consideration meeting economical requirements of a project while meeting comprehensive safety needs and potentially difficult or remote installation requirements. This article covers what you need to consider when selecting Smart temperature transmitters.

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Get the Benefits of IIoT Without the Heavy Front-end Investment Industrial Ethernet Book (US and Europe) , November 2019

Taking process data from smart HART field devices and sharing it with higher level systems, no longer has to be difficult or expensive. Industrial Ethernet backbones and wireless networks, IIoT HART devices, open industry protocols and ease of programming provides a quick and seamless way to share process data.

View Article

When You Need to Pass HART Data, Use Rugged and Reliable HART Isolators from Moore Industries. Instrumentation (UK) November, 2019

Prevent and solve common and costly problems that plague many of today’s smart process loops while reliably passing along valuable HART process and diagnostic data from process instruments and transmitters by using highly rugged and economical HART^® isolators. 

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Dual Input Temperature Allows for Uninterrupted Process Monitoring, Process Industry Informer (UK and Europe) June, 2019

Temperature sensor failure can wreak havoc on processes where maintaining temperature is critical and monitoring must be continuous. Whether it’s a runaway temperature that spoils a batch or a process interruption when an alarm shuts down the process due to a sensor failure, you lose time and money. Learn how you can solve these issues saving both time and money by using dual input temperature transmitters.

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HART via MODBUS to optimize asset-management-system processes SmartIndustry March, 2019

Over the last few decades, the introduction of industrial Ethernet and wireless networks in process manufacturing plants and automation facilities has meant that data exchange within a facility and even throughout global corporate networks is becoming commonplace. The challenge for legacy plants is to find inexpensive and convenient ways to take advantage of the data already available in existing field devices. This article discusses how HART interface devices with open industry protocols and ease of programming provide a quick and seamless way to share process data.

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NORTH HILLS, Calif.—Sep. 12, 2019—Our industry lost a great man and pioneer on September 6th, 2019.  Leonard W. Moore (Len) who was founder and owner of Moore Industries-International, Inc. (www.miinet.com) passed at the age of 85. Len was born November 26th, 1933 in Hazelton, Iowa where he attended elementary through high school. At the age of 16 he graduated high school and then attended Iowa State University where he obtained a BS in Electrical Engineering.

After graduating college Len entered the Army in 1953 as a weapons guidance specialist and spent time at Fort Sill, OK and Fort Bliss, TX. He then served time in Japan training and teaching soldiers how to operate, calibrate and repair various guidance and artillery weapon systems. It was here where Len realized he had a passion for instruments and control circuits. After his tour in Japan, he left the Army and returned home to Iowa.

In 1958, newly married to wife Martha Moore and eager to start his career, he took a job with Hughes Aircraft in El Segundo, CA.  With one car and only a few suitcases to their name, Len and his wife packed up and headed west to start their new life. After a few years with Hughes and a few more engineering and automation jobs, Len made a bold decision to do things his own way – in 1968 he founded Moore Industries-International, Inc. in North Hills, CA.  Starting out in a small office with one employee and a very small budget, Len set out to design the most rugged industrial instrument solutions that he knew the industry needed.  He used to say that at Moore Industries “we are an engineering company that solves customer’s problems by manufacturing bulletproof solutions.”

Starting with one signal isolating/converting instrument, the SCT Signal Converter and Isolator, Len and his “troops” (the term that he used for the company’s employees) went on to design, build and support more than 225 different products that isolate, protect, convert, alarm, monitor, control and interface with any industrial or automation control and monitoring system. Len often said, “the best compliment we can get from our customers is that they forgot about our products or solutions because they performed so well that they just plain forgot they were ever installed.” This rugged M1 Tank design mentality, which he mandated, can be seen in most of the company’s products that are enveloped in solid aluminum cases instead of fragile plastic or polycarbonate housings.

More than 50 years after its inception, Moore Industries’ world headquarters is still prospering and remains in North Hills, CA. The company continues to manufacture 100% of its products at this USA location, something Len insisted upon.  With two acquisitions, more than 19 industry associated patents, 200 employees and remote offices located in the United Kingdom, The Netherlands, Belgium, Australia and China, the company continues to engineer, design, manufacture and support existing and new products for worldwide process control and automation customers. 

While Len had a passion for his company and its employees, he lived a full life outside of the company too.  Len was an accomplished race car driver spending time in racing schools, competing on the Trans Am Race Circuit, and even sponsoring an Indy Series car during the 1980’s.  Flying was also a hobby and interest of Len’s.  Although he had hundreds of hours under his belt flying right seat during work trips in the company’s Commander airplane, it wasn’t until 2005 that Len finally went ahead and formally got his pilot’s license.  During this time, he had another side project going on:  restoring, and later flying, a 1946 single engine Ercoupe in his hangar to museum-like condition with World War II Army Air Corps colors.  Len used to say, “this is the world’s most expensive Ercoupe”, which is no surprise because he was an absolute perfectionist. He later donated this plane to the Palm Springs Air Museum.

In 2009 Len was inducted into the ISA’s revered group of Honorary Members - individuals whose support of, and/or contributions to, the advancement of the arts and sciences of instrumentation, systems, and automation are deserving of special recognition.  Len was also a Professional Engineer, had a private contractor’s license and was, of course, a pioneer and cornerstone for our industry.

Len is survived by his three sons: Tony and his companion Sonnie, Nick, and Chris and his wife Deanna; his grandsons Nick, Matthew, Justin and Christopher; and his longtime companion Christine Hulfish.

To a smart, devoted and compassionate man with a quick wit and great sense of humor who left a long and impressive legacy - Godspeed Len, we will miss you greatly.

About Moore Industries-International, Inc.:

Based in North Hills, CA, Moore Industries is a world leader in the design and manufacture of rail, panel and field instruments for industrial process control and monitoring, system integration and factory automation. The company has direct sales offices in the United States and additional strategic worldwide locations in Australia, Belgium, the Netherlands, the People's Republic of China and the United Kingdom. The company serves a variety of industries such as chemical and petrochemical; power generation and transmission; petroleum extraction, refining and transport; pulp and paper; food and beverage; mining and metal refining; pharmaceuticals and biotechnology; industrial machinery and equipment; water and wastewater; and environmental and pollution monitoring. 

Many process facilities need 4-20mA signals from field transmitters and analyzers to be shared with their BPCS (Basic Process Control System) and alternate monitoring systems or backup PLCs.  But wiring these three elements in series breaks loop integrity and can cause problems when the secondary or backup system fails or is disconnected. Using area isolation, also known as signal splitting, by connecting the secondary system on the secondary side of the isolator, failure of this loop does not impact the primary loop to the BPCS. They can connect these secondary systems, such as a backup PLC, and ensure that if it fails or is removed, the primary host or control system will continue to receive the uninterrupted process signal.  

By using a narrow isolator you can double the isolator count in the same space. This is ideal for utilizing existing field mounted cabinets. When the cabinet needs to be located in an area with extreme ambient temperatures and the location is a hazardous area where climate control of the cabinet is problematic, a narrow isolator with necessary approvals that can withstand the extreme environment is needed.

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The narrow 15mm ECT-DIN signal isolator and converter with 4-20mA, 1-5V and 0-10V inputs and 4-20mA output allows more isolators to fit in cabinets and field enclosures where installation space is a premium. Being UL Approved for General and Hazardous areas, and having the same RFI/EMI protection and -40°C to 85°C operating temperature range as the rest of the ECT family of isolators, this narrow and rugged isolator can be installed in hazardous locations and does not require installation in cooled or climate controlled environments making it perfect for more extreme locations.

Many food, beverage and pharmaceutical process facilities need 4-20mA signals from field transmitters and analyzers to be shared with their BPCS (Basic Process Control System) and alternate monitoring systems or chart recorder. But wiring these three elements in series breaks loop integrity and can cause problems when the secondary or backup system fails or is disconnected. Using area isolation, also known as signal splitting, by connecting the secondary system on the secondary side of the isolator, failure of this loop does not impact the primary loop to the BPCS. They can connect these secondary systems, such as a chart recorder, and ensure that if it fails or is removed, the primary host or control system will continue to receive the uninterrupted process signal.  

By using a narrow isolator you can double the isolator count in the same space. This is ideal for utilizing existing field mounted cabinets. When the cabinet needs to be located in an area with extreme ambient temperatures and the location is a hazardous area where climate control of the cabinet is problematic, a narrow isolator with necessary approvals that can withstand the extreme environment is needed.

Download the PDF file

The narrow 15mm ECT-DIN signal isolator and converter with 4-20mA, 1-5V and 0-10V inputs and 4-20mA output allows more isolators to fit in cabinets and field enclosures where installation space is a premium. Being UL Approved for General and Hazardous areas, and having the same RFI/EMI protection and -40°C to 85°C operating temperature range as the rest of the ECT family of isolators, this narrow and rugged isolator can be installed in hazardous locations and does not require installation in cooled or climate controlled environments making it perfect for more extreme locations.

Accelerate your HART data. Timely knowledge about your process enables better decisions and faster preventive action. Now you can get the process detail that you need from your Smart HART devices to MODBUS/TCP and HART-IP based monitoring and control systems at the speed of Ethernet with the HES HART to Ethernet Gateway System from Moore Industries.

Process facilities have a significant investment in the BPCS (Basic Process Control System) and upgrading with new HART capable input cards or a new control system in order to get HART data from newer smart HART devices is often cost-prohibitive. But they still need to get HART data from key devices to optimize their process. Plus, with expanding analytics capabilities of higher-level systems and the spreading adoption of IIOT, a way is needed to get that valuable data where it can be factored into predictive analytics.

Download the PDF file

In this example the BPCS MODBUS/TCP host for the process does not have any smart HART input cards. This existing point-to-point 4-20mA process loop uses a four-channel HES HART to Ethernet Gateway System to extract valuable PV data and diagnostics from HART smart valve positioners and reports it to the BPCS over Ethernet using MODBUS/TCP or HART-IP, without any BPCS upgrades. This can help provide early warning for critical valves before they fall out of performance specifications or fail. Additionally, any remote computer connected to the corporate network can view any data such as diagnostics and process variables gathered by the HES via a standard web browser. 

Key attributes

HES can poll for:

• 240 Device Variables from 1 HART 7 device
• 25 Bytes of diagnostic data (Command 48) in addition to the above variables
• See this product in the Online Catalog

Process facilities have a significant investment in the BPCS (Basic Process Control System) and upgrading with new HART capable input cards or a new control system in order to get HART data from newer smart HART devices is often cost-prohibitive. But they still need to get HART data from key devices to optimize their process. Plus, with expanding analytics capabilities of higher-level systems and the spreading adoption of IIoT, a way is needed to get that valuable data where it can be factored into predictive analytics.

Download the PDF file

In this example the BPCS MODBUS/TCP host for the process does not have any smart HART input cards. This existing point-to-point 4-20mA process loop uses a four-channel HES HART to Ethernet Gateway System to extract valuable PV data and diagnostics from HART smart valve positioners, and reports it to the BPCS over Ethernet using MODBUS/TCP or HART-IP, without any BPCS upgrades. This can help provide early warning for critical valves before they fall out of performance specifications or fail. Additionally, any remote computer connected to the corporate network can view any data such as diagnostics and process variables gathered by the HES via a standard web browser. 

Key attributes

HES can poll for:

• Dynamic Variables (PV, SV, TV and QV)
• 128 Device Variables from HART 7 devices
• 25 Bytes of diagnostic data (Command 48) in addition to the above variables
• See this product in the online Catalog

Process facilities have a significant investment in the BPCS (Basic Process Control System) and upgrading with new HART capable input cards or a new control system in order to get HART data from newer smart HART devices is often cost-prohibitive. But they still need to get HART data from key devices to optimize their process. Plus, with expanding analytics capabilities of higher-level systems and the spreading adoption of IIoT, a way is needed to get that valuable data where it can be factored into predictive analytics.

Download the PDF file

In this example the MODBUS/TCP capable BPCS does not have any smart HART input cards. The four existing point-to-point 4-20mA process loops connect to a four-channel HES HART to Ethernet Gateway System that extracts HART data from the field transmitters, converts it to MODBUS/TCP and reports it to the BPCS over Ethernet, without any BPCS upgrades. Additionally, any remote computer connected to the corporate network can view any data such as diagnostics and process variables gathered by the HES via a standard web browser.

Key attributes

HES can poll for:

• Dynamic Variables (PV, SV, TV and QV)
• 128 Device Variables from HART 7 devices
• 25 Bytes of diagnostic data (Command 48) in addition to the above variables
• See this product in the online Catalog

Process facilities in most industries have multitudes of HART devices monitoring processes throughout the plant. The challenge is getting all of the HART data from those instruments to the control systems and higher-level systems for predictive analytics while controlling costs and without running more wires.

Download the PDF file

A four channel HART to Ethernet gateway is a perfect device to serve as a remote HART I/O interface to MODBUS/TCP hosts by multidropping up to 16 HART devices per channel, 64 devices total. For maximum density, the HES HART to Ethernet Gateway System can be used to gather hundreds of HART variables from multiple devices and send over Ethernet. If diagnostic bits and bytes are included, the data points reach into the thousands for each HES. Additionally, any remote computer connected to the corporate network can view any data such as diagnostics and process variables gathered by the HES via a standard web browser. 

Key attributes

HES can poll for:

• Dynamic Variables (PV, SV, TV and QV)
• 128 Device Variables from HART 7 devices
• 25 Bytes of diagnostic data (Command 48) in addition to the above variables
• See this product in the Online Catalog

Process facilities have a significant investment in the BPCS (Basic Process Control System) and upgrading with new HART capable input cards or a new control system in order to get HART data from newer smart HART devices is often cost-prohibitive. But they still need to get HART data from key devices to optimize their process. Plus, with expanding analytics capabilities of higher-level systems and the spreading adoption of IIoT, a way is needed to get that valuable data where it can be factored into predictive analytics.

Download the PDF file

In this example the BPCS MODBUS/TCP host for the process does not have any smart HART input cards. This existing point-to-point 4-20mA process loop uses a single channel HES HART to Ethernet Gateway System to extract HART data from a smart HART flowmeter, converts it to MODBUS/TCP and reports it to the BPCS over Ethernet, without any BPCS upgrades. Additionally, any remote computer connected to the corporate network can view any data such as diagnostics and process variables gathered by the HES via a standard web browser. 

Key attributes:

HES can poll for:

• Dynamic Variables (PV, SV, TV and QV)
• 128 Device Variables from HART 7 devices
• 25 Bytes of diagnostic data (Command 48) in addition to the above variables
• See this product in the Online Catalog

Sometimes there are temperature measurements that require advanced functions like differential, averaging or even high select capability.

Download the PDF file

Rather than running signal wires all the way back to a PLC or DCS to perform those functions, consider the THZ3/TDZ3 Smart HART Dual Input temperature transmitters.  This family of transmitters can accept dual sensor inputs and can perform sensor backup/failover, averaging, differential, absolute differential, high select and low select functions. The THZ3/TDZ3 transmitter family can be HART or DTM programmed and carries worldwide approvals. 

Key Attributes:

• Advanced measurement functions with dual sensor input
• HART or DTM programmable
• Worldwide hazardous area approvals
• See THZ3/TDZ3 in our Catalog

Every oil and gas site uses a vast array of different length solid sheathed, spring loaded RTDs and thermocouples.  Stocking these various lengths for every temperature measurement point can be very costly and time consuming.

Download the PDF file

To lower inventory needs and increase your quality of temperature measurements, consider the WORM Flexible Temperature Sensor that comes in just about every type of RTD and Thermocouple.  With a quick measurement and a simple in-field trim-to-length, the WORM handles nearly every thermowell assembly.  The smaller mass of the WORM yields a 13% faster response time, minimizes ambient temperature effects and with its proprietary potting offers better resilience to high vibration environments, which is a common cause of failure with RTDs.  You can buy a single WORM, pack or three or save more money by ordering 10 in a can of WORMS.

Key Attributes:

• Flexible WORM sensor fits almost any thermowell length
• 13% faster response time
• More resilient in high vibration applications that fixed-length solid sheathed RTDs
• See this product in the Online Catalog

A study by the ARC Advisory Group in 2011 showed that 46 percent of all field devices installed worldwide communicate using the HART protocol. This is more than all fieldbus devices, proprietary protocols and 4-20mA (analog/non-smart) combined. There’s a good chance that you are have HART-enabled devices in use at your plant or off-site location. The question is: are you getting the most from HART?

Moore Industries has a range of products designed to help end users access the powerful information available through smart HART instrument systems. These products accept and "read" the HART digital protocol signal that rides on the 4-20mA wires of a smart HART multivariable transmitter or valve. Some of our HART products provide additional benefits such as isolating, splitting, converting or “breaking out” HART signals.

Here’s a look at our key HART products:

SSX and SST Safety Series Isolators and Splitters: Part of Moore Industries’ FS Functional Safety Series, the exida-approved, SIL 3 capable 2-wire (loop powered) SSX and 4-wire (line/mains powered) SST Safety Isolators and Splitters provide isolation and signal conversion for your SIS (Safety Instrumented System) needs. These units protect and enhance loops and also pass valuable HART data from the field transmitter to host systems and vice-versa. In addition, the SST Splitter model takes the input from one of your process signals and creates two identical, completely isolated outputs to two separate monitoring or control devices.

HES HART to Ethernet Gateway System: Timely knowledge about your process enables better decisions and faster preventive action. Now you can get the process detail that you need from your Smart HART devices to MODBUS/TCP and HART-IP based monitoring and control systems at the speed of Ethernet with the HES HART to Ethernet Gateway System. The rugged HES can handle thousands of process variables and diagnostic data points from up to 64 connected smart HART devices. Watch the HES video.

HIM HART Interface Module: The HIM unlocks the full potential of new and in-place smart HART multivariable transmitters and valves. It allows up to three additional analog process variable measurements from a smart device with no additional process penetrations or wiring. It provides additional analog signals proportional to a multivariable transmitter’s primary, second, third or fourth variables, or to user-selectable valve parameters such as stem position. It also provides High/Low process and loop diagnostic alarms.

HCS HART Concentrator System: The HCS converts a HART digital signal to a serial (RS-485 or RS-232) MODBUS RTU communication protocol. This allows HART transmitters and valves to interface directly with MODBUS-based monitoring and control systems. It operates in point-to-point HART mode or up to 16 HART instruments can digitally communicate on the same wires in a digital multidrop HART network. It can monitor primary and non-primary variables along with HART instrument diagnostics. See an example of how the HCS is used in remote natural gas settings in this video.

These are just a few of our most popular HART products. For more information, check out the HART Gateways, Monitors and Interfaces section of our online catalog.

Do you want more information? Download a data sheet. Or visit the catalog.

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very two years, our International Sales team comes to Moore Industries our worldwide headquarters for a week of meetings. It's a great opportunity for the team to share ideas and plan their sales activities in the future. While the meetings are hard work, there are some opportunities to unwind. Moore Industries hosts a dinner for the team and there is an off-site activity to bring the team together. This year it was exciting go-kart racing followed by billiards.

Here's a look at some of the photos from the week.

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On February 27th and 28th MIE (Moore Industries-Europe Inc.) will attend Hazardex 2019 at the Holiday Inn Hotel in Runcorn, Cheshire, UK. Hazardex is a journal, website and Conference that provides up-to-date industry information on challenges and compliance. This annual event aims to strengthen and expand the community in the process industry that looks to Hazardex for news and information on hazardous areas and Functional Safety issues. MIE will be exhibiting intrinsically-safe, explosion proof and functional safety products such as SPA²IS, THZ3, STA, STZ, SST, SRM along with Moore Industries new HES, HART to Ethernet Gateway System. 

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Q:  A field tech told me he installed an IPT2/4-20MA/3-15PSIG/20PSIG/-FA1 [DIN] unit.  In the product bulletin, I don't see a purpose for the trailing "2" in the model name, and I don't see an explanation for -FA1.

A: The “2” in IPT2 indicates that it is the successor to the older IPT. It is a direct replacement with the same form/fit/function with improved performance. This next-generation IPT2 I/P Transmitter provides advanced features including 18 standard pressure output ranges, lower air consumption, quick response to step changes, greater accuracy, drift reduction, and more.

The -FA1 option provides a mounting block for the installation of the unit on DIN rail.  It also designates that the supply and outlet ports are on the bottom of the mounting block, the electrical signal test jacks, and electrical connections are on the front face and that there is no pneumatic test jack. (see table 2 on page 3 of the data sheet for the explanation.)

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Q: We are considering ordering the Moore Industries SPA/0-100mV/2 PRG/U/-SOL [DIN]. Can we power it using 24VDC? If so, what is the power consumption and how do we terminate? Also, can you please confirm whether this unit is Class 1 Div2, group A,B,C,D?

A: The SPA can be powered with 24VDC. It accepts any source voltage in the ranges of 22-300Vdc or 90-260Vac. Power Consumption is 2-4W, nominal; 6W, maximum.

If you specify the -HS option (hermetically sealed relays) then it is approved for Class 1 Division 2 locations when installed in an enclosure that provides sufficient mechanical and environmental protection. Usually, a NEMA 4 rated box will serve. See page 1 of the data sheet (click the link to open the download page).

The sample model number with -HS option and with a NEMA 4 enclosure is:
SPA/0-120MV/2PRG/U/-SOL-HS [R3H]. 

The –SOL option in this model number indicates a specially engineered SPA used to monitor the health of solenoid valve coils.

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Q: What are some ways to improve the long-term stability of my RTD temperature measurement?

A: There's no question that the first step in improving the overall quality and long-term stability of your temperature readouts is to use a Class A, 4-wire RTD. Lead wire imbalances are a major cause of instability during the measurement process. A single ohm of imbalance in a three wire, platinum .00385 alpha, 100 ohm RTD can produce as much as 2.5°C of error in a measurement. By adding a fourth lead wire, you eliminate potential errors in measurements created by resistance imbalances between leads. 4-wire RTDs are no longer just for special uses, and they aren't cost-prohibitive. In fact, in many cases they are more cost-effective than using traditional 3-wire RTDs.

Another way to improve long-term stability is to make sure that your RTDs have been thermally aged. This process involves placing RTDs into a continual cycle of temperature extremes that season the RTD and even help extend its measurement life. The sensors that we use in high-accuracy applications have been temperature cycled from 0°C to 600°C for 1,000 hours, making them virtually drift-free for the next five to 10 years.

Do you want more information? Find a data sheet here. Or see our Temperature Transmitters or Temperature Assemblies and Sensors.

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Q: For the STA 4-Wire SIL 2 and SIL 3 Compliant Programmable Current/Voltage and RTD/Thermocouple Safety Trip Alarms, can the process alarm relays be configured as Failsafe?  Can the process relay output of the SPA2-TRPRG be configured Failsafe?

A: The output relays of the STA are configured only as Failsafe.  For example, the coils are de-energized in the alarm condition or when there is a loss in power.  For systematic integrity up to SIL 3 and for random integrity up to SIL 2, the STA is also exida certified 61508:2010.  This means that an STA is approved for single use in Safety Instrumented Systems (SIS) up to SIL 2 and in redundant architectures (1oo2, 2oo3, etc.) up to SIL 3.

The output relays of other alarms that we offer such as the SPA² can be configured either as Failsafe or Non-Failsafe.

Download the SPA² or STA data sheet for more details.

Q: Does your SPA² have a SIL 2 rating?

A: The SPA² can be used in safety instrumented systems (SIS) as long as the appropriate safety-related data and restrictions in use are reviewed and followed by a competent safety practitioner. We have a FMEDA (Failure Modes, Effects and Diagnostics Analysis) report that provides this data for the SPA², and is available upon request.

We also offer the STA Functional Safety Limit Alarm Trip, which is expressly designed for safety related applications and has third party certification (exida) per IEC 61508:2010 for systematic integrity up to SIL 3 and for random integrity up to SIL 2.

The exida certified FMEDA data can be provided and used by a competent functional safety practitioner to calculate the required PFDavg and determine the SPA²s or STAs SIL capability and overall suitability in your Safety Instrumented Systems (SIS). 

Do you want more information? Download the data sheet. Or visit the catalog.

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Q: I am looking for a signal conditioner that has multiple inputs (RTD) that can be averaged on one mA output.  What do you recommend?

A: First determine how many RTDs you need to average, the number of wires (2-wire, 3-wire, or 4-wire), and are the cable lengths the same for each RTD? Then we can help you determine which product will fulfill your specific needs.

Moore Industries has several products that can handle multiple RTD inputs and provide a calculated average output. 

Both field-mount and Din-mount models are offered.  The THZ3/TDZ3 models handle two RTD inputs while the SPT, MDS and NCS handle three or more RTD inputs.  If you have an application that involves Safety Instrumented Systems (SIS), the STZ transmitter family can be used.

The THZ3 is a smart HART two-wire, output loop powered transmitter that comes in a hockey puck configuration for field mount applications or in a DIN rail mount package for cabinet installations.  The TDZ3 is a field mount unit with an integral display.  Both units offer the ability to output a 4-20mA signal that represents the average of the RTD inputs.

The SPT accepts T/C, RTD, millivolt, or ohms input in different ranges, sensor types, and connection schemes.  The SPT has a simple menu system and LCD screen for easy setup and calibration, and all settings are stored in non-volatile memory, protecting them from power loss.

The I/O Equation Station Multifunction Distributed I/O System (MDS) is a four-wire module that can average up to 4 RTDs.  The number of wires per RTD depends on the number of RTDs that can be connected. 

The Net Concentrator System (NCS) is an expandable I/O system that consists of input and output modules that  can be configured to accept any number of RTD inputs to calculate an average output. The NCS can be programmed to handle a wide range of signal input and output including current, voltage, discreet, relay, RTD, thermocouple, resistance, and potentiometer with an operating range of -40°C to +85°C.

Do you want more information? Download the data sheet. Or visit the catalog.

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Q: We do not have sufficient PLC digital output spares to perform a Manual Reset of the three installed safety temperature controllers. We are going to remove the alarm latching on both limits and faults on our STA Functional Safety Alarm Trip. The Manual Reset radio button stays active in the STA configuration software. Will the latches clear after we are outside the dead band limits? 

A: The radio buttons selected in the Manual Reset rectangle are irrelevant if you have not checked any of the Latching check boxes in the Display Alarms tab. Therefore, if latching is unchecked, the alarm state will reset once normal conditions exist after a brief event.

When using the configuration software, settings are downloaded to the instrument in the form of a Configuration File and stored in the instrument’s memory. You can save a backup copy of the file on your PC hard drive. The STA communicates with the PC through an RS-232 connection to the PC’s serial port or optional USB Communications Cable. Learn more about the STA Functional Safety Alarm Trip.

Problem: Municipalities often have several wet well locations around a city that pump waste from low lying areas up to main sewage veins that feed waste treatment plants.  Level instruments monitor the wet well level and controllers then engage the grinder pumps.  Since wet wells contain waste, volatile gasses such as methane require that these level instruments be rated for use in Class I, Div 1 environments.

Solution: When IS (Intrinsic Safety) is chosen as the method of protection, a separate IS barrier is required for each level transmitter that is wired to the pump controller. The SPA2IS Alarm includes a built in IS barrier for the level instrument located in the wet well.  This means that the separate IS barrier does not have to be purchased, installed and maintained.  The SPA2IS has four alarms, each configurable with 0-100% deadband, which makes it an ideal fit for a wet well level controller.

Do you want more information? Download the data sheet. Or visit the catalog.

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Make sure you check out the Technical White Papers section of the Moore Industries website. It's a great resource to find out more information about Moore Industries and our products. The white papers available for download cover a variety of topics including:

• Alarm Trips and Logic Solvers
• Intrinsic Safety
• Functional Safety
• Process Control and Distributed I/O Networks
• Temperature Measurement
• HART and Fieldbus

These are just a few of the topics covered in our white papers. Get technical information on the installation and use of Moore Industries products or read about how customers are using Moore Industries' instrumentation in real world settings. Our White Papers are free to download and just a click away.

Do you want more information? Download the data sheet. Or visit the catalog.

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Q. What are the advantages and limitations of HART protocol or an instrument with MODBUS communication embedded? How many instruments can the HCS interface in the same loop? Are we able to read/write the five instruments at the same time using HART?

A. Today, a major advantage that HART and MODBUS RTU possess is industry- wide acceptance by users and manufacturers. HART-enabled transmitters, valve positioners, flowmeters, and other smart devices superimpose a digital signal upon their 4-20mA process signal. Combining digital communications with the 4-20mA DC signal provides flexibility of application for process control instrumentation and accommodates multiple variables and device self-diagnostics. HART field transmitters measure process parameters as well as generating a 4-20mA signal used for process control by a DCS, PLC or some other control system and are easily configurable or diagnosed with a HART handheld communicator (HHC). Several digital control system vendors offer a HART based systems for predictive maintenance that take advantage of the HART devices’ self-diagnostic capability. The disadvantage to HART is that the digital signal is slow. A maximum of 16 HART devices can be connected on a HART multi-drop loop. In that case, the analog signal is fixed to a value of 4mA.

The advantages of MODBUS RTU are that it is strictly digital (RS485) and it’s relatively fast but it does require at least two wires for signal and two wires for power; unlike HART that has signal and power over the same two wires. A significant number of MODBUS RTU addresses can be connected in multi-drop on the signal RS485 data link. 

The HART Concentrator System HART-to-MODBUS RTU Converter (4-Wire) HCS is a HART Master (either the primary of the secondary master), and sends queries to the HART device(s). The HCS can communicate with up to 16 devices in multi-drop mode on one twisted pair loop. The collected data is stored in MODBUS RTU registers in the HCS. On the MODBUS side, the HCS is a MODBUS RTU Slave, so it responds to queries from a MODBUS RTU Master. The MODBUS RTU Master can only read data from the HCS. It cannot write data to the HCS with the intent to change settings in the HART device(s).

In a HART multi-drop loop, each instrument will have its own unique HART address. HART does not allow simultaneous communication to multiple instruments in a multi-drop loop. Instead a HART master or host has to poll each HART slave’s unique address and communicates with one HART device at a time. Moore Industries’ HCS HART Concentrator System converts a HART digital signal to a serial (RS-485 or RS-232) MODBUS RTU communication protocol. This allows HART transmitters and valves to interface directly with MODBUS-based monitoring and control systems. In point-to-point HART mode, the HCS concentrator system is set to monitor a single instrument. Wiring details for both single loop and multi-drop are shown in the HCS. In a multi-drop, the HCS sends queries and receives data from each HART instrument in turn. This follows the defined HART protocol.

Find out more about the HCS.

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One of our customers uses ethylene for its process feed and has installed a new ethylene terminal with a 18m3 storage tank. It was necessary to install a new pipeline network to connect the terminal to production plants, other existing pipelines, and to neighboring companies using ethylene. For safety reasons, the pipeline was buried 1.5 meters deep.

To monitor temperatures across the pipeline, 16 temperature sensors needed to be installed at various points. Because the integrity of the pipeline was critical for safety reasons, there could be no welding or other intrusions into the pipe. This led to using skin sensors that meet ATEX Explosion-Proof requirements to take the temperature measurements.

A typical solution is a 6mm-diameter mineral-insulated RTD or T/C sensor with a skin path that is strapped to the underground pipe while a cable travels to the surface where the head is installed. The problem with this design is if the sensor fails, it requires expensive digging near the underground pipeline to replace. A better solution uses a pipe skin mounting block strapped onto the buried pipe, a 1/2"-diameter stainless steel pipe that reaches the surface and a transmitter directly mounted onto the pipe. This allows a sensor to be replaced without costly digging but also means that a sensor needs a sensitive tip. 

A perfect choice for this application is the WORM Flexible Sensors for Thermowell Temperature Assemblies. It provides accurate, fast readings and its flexible design with a universal length allows it to reach almost any spot. The WORM’s unique flexible design allows installation quickly and it delivers step response times 13% faster than standard sensors. The installation kit provides parts for three different installation options. The WORM can be purchased in economical 10 packs. Check out the WORM data sheet for more details.

Want to learn more? Get the product data sheets on other products such as THZ3 & TDZ3 Dual Input Smart HART Temperature Transmitter, THZ DH & WL Smart HART and WirelessHART Temperature Transmitter (2-Wire), and BULLET WirelessHART Adapter.

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Q. I have an application that requires an analog splitter. The single input signal to the splitter comes from a transducer, and the transducer requires loop power. The two outputs are going to an analog monitoring card on a PLC, which provides power to the connected 4-20mA signal signals. Is the ECT what I need?

A. If you need a device with two outputs and with output loop power, the MIX would be a good choice. However, this model does not provide loop voltage to the input. It is a dual channel isolator so you would connect the input signal in series to the two input channels. MIX 2 and 4-channel models draw operating power from the loop output side, where power is typically made available by the receiving device, such as a DCS or PLC.

The ECT “Splitter” on the other hand provides loop voltage to the transducer, and it also provides the voltage to the two output loops. It requires a power source separate from the output signals.

You can specify either 24DC or 117AC for the separate power input. If the outputs must be compatible with a control system input card that is providing loop voltage then the EP option for the ECT modifies them to be passive. However, a separate power source is still required. The ECT offers Superior signal isolation (up to 1500Vrms). An ECT with the following model number would meet your application requirements: ECT/4-20MA/4-20MA/24VDC/-EP [DIN]

Quality and industrial strength protection stops ground loops, motor noise, and other electrical interference from affecting process signals. The ECT offers RFI/EMI protection against the unpredictable, harmful effects of radio frequency and electromagnetic interference. There is even a –RF option for enhanced protection in especially noisy environments.

Please visit our Interface Solution Download Center for more information on the MIX or the ECT line of products.

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Q. I want to split out the HART variables from a smart multi-variable transmitter's 4-20mA analog output.  My preference is to have the secondary variable (SV) and tertiary variable (TV) represented as additional 4-20mA outputs so I can connect those to spare analog input channels in my DCS. Can the HIM do that?

A. Yes, it can. The HIM is a Smart HART® Loop Interface and Monitor can be configured to act as a Primary or Secondary Master and can read up to 4 of the dynamic variables of a HART transmitter and can assign them to up to three analog 4-20mA outputs with no additional process penetrations or wiring. A free simple-to-use PC program lets you program the HIM in minutes so that it interfaces with every HART-compatible monitoring and control device including: 

• Multivariable Mass Flow Transmitters 
• Coriolis, Magnetic, Ultrasonic and Vortex Flow Meters 
• Dual-Sensor Temperature Transmitters 
• pH Transmitters 
• Pressure Transmitters 
• Radar and Hydrostatic Level Transmitters 
• Valve Positioners and Damper Operators 

When configured as a Primary or Secondary Master, the HIM operates in the Normal(Poll/Response) Mode.  Additionally the HIM can be configured to communicate in Burst Mode or Listen Mode; which are both passive modes where the HIM does not need to control poll the HART slave transmitters.

Installed transparently across the 4-20mA instrument loop, the HIM reads the HART digital data that is continuously being transmitted on a smart transmitter’s analog loop wires, and converts it to 4-20mA signals that can be readily accepted by a DCS or PLC. This allows you to continuously track a multivariable transmitter’s second, third, and fourth variables.  

In the future if you want to just isolate or split off a HART/4-20mA signal, then Moore Industries offers isolators, which can pass the digital HART component variable of the signal. Isolator models Moore Industries manufactures are the HIX, HIT, SSX, and SST.

Find out more about the HIM Smart Hart® Loop Interface and Monitor.

Do you want more information? Download the data sheet. Or visit the catalog.

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Q. Can the ECT-DIN, configured for 4-20mA input and 4-20mA output, be calibrated to give 4-12mA output when the input is 4-20mA so that the output is 1/2 the input? We have a radio I/O signal that is scaled to 4-20mA for 0-65,535 raw units. When sent to the PLC over MODBUS, it can't be read properly since the maximum register value size for the PLC is limited to 32,767.

A. The ECT with 4-20mA input/output doesn’t have enough adjustability to do a split range like the one you describe. Although it is possible for us to supply a special version of the ECT with 4-12mA or 12-20mA output, or you can use a PC configurable unit such as the CPT/HLPRG/0-20MA/117AC [DIN].

The universal CPT PC-Programmable Temperature Transmitter and Signal Isolator/Converter accepts a direct signal input from a wide array of sensors and analog devices including 23 RTD types, 9 thermocouple types, current and voltage signals, resistance and potentiometer devices, as well as direct millivolt sources. The 4-wire (line/mains-powered) CPT provides an isolated and linear current or voltage output (any range within 0-20mA or 0-10V) proportional to the input. The signal is ready for direct interface with readout instruments, recorders, PLC, DCS, or PC-based SCADA systems.

The CPT data sheet, manual, and configuration software can be downloaded from our site.

Do you want more information? Download the data sheet. Or visit the catalog.

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Q.  We want to use a SPD Field-Mount Programmable Loop Display with a radar transmitter mounted on the top of a cone-shaped bottom tank that outputs 4-20mA signal, and we would like to know how to account for the linearization function representing the volume measurement in the tank at various levels?

A. There are several things you can do depending on what information you have regarding your tank. Some tanks come with a strapping chart and the chart will tell you what volume you have at different levels inside the tank.

In this case, you can load a list of ordered pairs in a CSV (comma separated value) format into the SPD. Alternatively the SPD configuration software allows you to import a CSV (comma separated value) file that represents your linearization table, from Microsoft Excel for example. The SPD allows for custom curves using up to 128 linearization points.

If you do not have a strapping chart, you will need to do some math to relate the level in the tank to the tank volume based on the geometric shape(s). For example, at 5 inches you may have 5 gallons, and at 8.5 inches, you might have 10 gallons. If you have a vertical cylinder on top of a cone, the calculations should be relatively easy. A more difficult calculation would be a horizontal cylinder with F&D (flanged & dished) heads and with various nozzles.

The SPD is an excellent choice as a programmable field-mount loop indicator with extra-large 5-digit display that has large 29mm (1.15 in) digits for long-distance viewing and can be ordered with a back-lit option. The optional back-lit display makes it easy to read in dark conditions. Superior accuracy allows the SPD to display process information ±0.012% of input scale, it can operate in ambient conditions as low as -40°F, and a standard SPD is loop-powered by less than 2.3 volts (2.3VLP power input module). The SPD is also programmable with supplied configuration software to display a percent or any other engineering unit (EGU) of up to 5 characters.

Find out more about the SPD.

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Q. What is the maximum impedance that the output of an output loop powered ECT-DIN can drive?

A. For the output powered ECT (model ECT/4-20MA/4-20MA/12-42DC [DIN]) the max impedance that the output can drive depends on the loop voltage that you supply in series. For example, if you use a 24Vdc supply in series with the ECT’s output, the ECT uses 12V of the 24, and 12V is left over to handle loop loads: 12V/.02A=600 ohms. Note that you may want to account for the transmitter tied to the input of the ECT going to a fail high level of 23mA.  If so, then the max impedance level will only be 521 ohms.

The ECT-DIN is a signal isolator, converter, repeater, booster and splitter and is available in 2-wire and 4-wire powered models with the ability to match the ECT to the type of AC or DC power available at each location, superior signal isolation up to 1500Vrms, and RFI/EMI protection. 

The ECT-DIN also allows you to send the output from one transmitter to a second location. Additionally you can protect expensive monitoring/control equipment by eliminating common electrical paths or create a buffer between devices to allow interruption of one leg of a loop without impacting the other (see gallery image below for example). The ECT-DIN can even step down unsafe high level signals with an optional external input transformer (-EM option), allowing you to step down high level AC current inputs.

Learn more about the ECT-DIN.

Do you want more information? Download the data sheet. Or visit the catalog.

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Q. I want to share a critical pressure signal with my DCS that is now part of our safety instrumented system (SIS) and have a two part question. First, do your isolators pass the HART diagnostic data that comes from my SIS smart pressure transmitter? Second, if there is a total failure of the pressure transmitter, where will the output of the isolator go to that is feeding my DCS?

A. Yes, we have isolators that were designed specifically for these types of applications. The SSX and SST are exida approved SIL 3 capable isolators that pass HART data between any HART host or handheld device and the field transmitter. The second part of your question has two answers.

The SSX is an output loop powered isolator and as such when the input goes to 0mA the output will only drop to a minimum of about 2-2.5mA. The floor or minimum output is necessary because the SSX will need some level of current to keep its electronics circuit powered.

The SST is a four wire isolator so it behaves a bit differently. The SST’s output will follow the input through the entire range. For instance, if the input goes to 0mA or open circuit the output of the SST will follow the input all the way down to 0mA. Depending on your DCS settings, you can then choose when and how you want to alarm on the pressure transmitter’s health or loop status. 

Download the data sheet to learn more about the SSX and SST.

Q. Do you have a temperature control solution for a batch process chamber we have?  We have a manufacturing process that uses a critical batch process chamber requiring an RTD that senses the temperature. When the process chamber is being used, we need to maintain temperature, so we have a secondary temperature monitor to help in case of a fail-over. To do this, I need to connect to our RTD that has dual 4-wire inputs and be able to switch from the primary to secondary if the primary is disconnected or fails.

A. You can use a  Moore Industries’ THZ³-DIN temperature transmitter to precisely control the temperature. The THZ³-DIN can accept two 3-wire RTDs and can be configured so that its 4-20mA analog output is configured for failover/backup. If the primary RTD fails or is disconnected, the THZ³ automatically switches to the secondary RTD, it gives you a HART^®alarm (and display an error if TDZ³ is used), and allows you to maintain the temperature measurement in the chamber.

You can use your existing 4-wire RTDs as 3-wire elements by taping off one of the leads. You will still have lead length compensation with the 3-wire RTDs as long as the leads are the similar length and have equal resistance.

The THZ3 can be configured by using a HART^® hand held configurator or with PACTware running on a PC. A CDROM is provided with the PACTware installation files and DTM for the THZ³ with the shipment of the device. The THZ3 data sheet, manual, HART^®DD, PACTware installation files, and the DTM are also available for download on Moore Industries site.

An easy-to-use yet robust Dual Input Smart HART^® Temperature Transmitter, the THZ³ configures quickly and easily to accept a direct signal input from a wide array of sensors and analog devices including 14 RTD types and direct millivolt sources. The THZ³ has dual sensor input for Backup and Failover Protection, Average and Differential measurement and Low or High Select. It also has advanced RFI/EMI protection and ambient temperature compensation that helps guard against environmental factors that can quickly degrade measurement accuracy. Built-in 20 bit input resolution delivers exceptional digital accuracy of ±0.1°C (±0.18°F) with all Pt RTDs and is HART^® 7 compliant with exception based reporting and dynamic variable mapping. There's even a High Availability Option that enables the user to select how the AO behaves when there is an input failure or out-of-range value detected by the transmitter that prevents nuisance alarms on startups.

Do you want more information? Download the data sheet. Or visit the catalog.

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Q. Can the PSD PC-programmable loop display pass HART^® data without problems through the device if placed in a loop with a HART^® capable transmitter?

A. The input of the PSD connects in series to the existing 4-20mA/HART^®loop as if it was just an added resistance and only reads the analog 4-20MA signal. The PSD does not interfere with the HART^®digital signal being transmitted on the loop.

Since the PSD does not have a path to ground or an output that could connect to another device, ground loops or other issues like extraneous conducted noise are not a problem.

However, when these loops do connect to devices that have separate ground paths or outputs problems can certainly arise.  For these situations we recommend HART^® pass-through isolators such as the HIX 2-wire output-loop powered unit or the HIT, a 4-wire mains powered isolator.

Moore Industries’ HART Isolators are a highly economical solution to common and costly problems that plague many of today’s “smart” process loops offering protection from surges, spikes, and transients up to 1500Vrms. You can safely share the HART^® output of one transmitter with a secondary control or recording device allowing for redundancy without further burden or risk on a process loop. As an added bonus, you can perform equipment maintenance without loop downtime by isolating legs of the loop, making it possible to remove those instruments from the circuit without affecting other equipment. Protect and enhance your HART^® investment with the 2-wire (loop powered) HIX or the 4-wire (line-mains powered) HIT.

Learn more about the HIT/HIX HART Isolator and the PSD PC-programmable Loop Display.

Do you want more information? Download the data sheet. Or visit the catalog.

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Q: A Type K thermocouple is being used in a high temperature furnace environment for temperature measurement. However the Type K thermocouple is drifting too much. Is there something I could do so I don't have to change it out frequently or is there another type of thermocouple I could use?

A: You could use a Type N with Inconel 600 Material, which is designed to perform well at high temperatures (over 2000F) and helps prevent corrosion in environments where atmospheres are reducing or alternately oxidizing and reducing. This would be particularly helpful for a furnace process that includes heating and cooling with moisture present, creating potential for oxidation to form from the process. Other high temperature environments that benefit from Type N with Inconel 600 Material include boilers and cookers processes or extreme environments where the thermocouple cannot be replaced easily.

In terms of their basic function, Type K and Type N thermocouples are similar. Type K is one of the most common type of general purpose thermocouple. However, the environmental setting that your thermocouple will be used in can affect your choice. Type N thermocouples provide a higher level of stability and durability in adverse environments than Type K thermocouples. 

To be more specific, Type K thermocouples are susceptible to a phenomenon called Green Rot, or oxidation around the thermocouple. Green Rot is oxidation inside the thermocouple sheathing caused by operation at certain low oxygen environments, creating large negative calibration drifts leading to curve changes over time. Potential IR failure can happen, where the internal elements short and touch the outer sheathing due to oxidation (Green Rot). 

Type N is also a viable choice when adverse environmental factors and high temperature requirements are an issue and there is difficulty in frequently changing out the thermocouple. While a Type N with Inconel 600 Material is only 20% higher in cost than Type K, the Type N can perform longer without the drift that oxidation causes, preventing the need to shut down the process to change out the oxidized thermocouple.

If you decide that Type N thermocouple isn't for you and are using a Type K thermocouple where your environment is the key factor instead of temperature, you can reduce the chances of Green Rot by increasing the oxygen supply through the use of larger diameter protecting tubes. The opposite approach can also work by inserting a mechanism to absorb oxygen inside a tube which can bring oxygen levels below what will promote oxidation.

Moore Industries can help when you are deciding if Type N is viable replacement for your Type K thermocouple application. You can contact us with your questions or if you need to know more about a product, price or availability.

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Q. I have two different control systems and I need some splitters to split a 4-20 mA signal. I may need to have the loop isolated. Can you help specify a splitter that can send the signal to both control systems where I can use the splitter connected in a series on the original loop? My company has used the SIX in the past, would this work?

A. The SIX can be used in a “splitter” application when its input is connected in series on the original loop. The output of the SIX 2-Wire Signal Isolator/Converter gives you the isolated loop. The versatile SIX can be used as a signal isolator, converter, and repeater. It is an excellent choice for installation in the plant or control room. The 2-wire (loop-powered) SIX derives its power from the output loop, eliminating the need to install an additional power supply.

If you decide you need to have the two control systems isolated from the original signal, then you can use the ECT-DINmodel ECT/4-20MA/2X4-20MA/117AC* [DIN] Signal Isolator, Converter, Repeater, Booster and Splitter for more versatility. The ECT-DIN features a solid metal housing that stands up to the continuous, daily rigors of process control and factory automation applications.

Like the SIX, the ECT's input is wired in series with your original loop. The ECT then gives two separate and isolated outputs for your two control systems.  Each output is capable of driving 600 ohms of output load.  This version of the ECT also offers a TX option that powers a two-wire transmitter connected to its input.

If you have functional safety in mind, the SSX/SST Model number SST/4-20MA/2X4-20MA/117AC* [DIN] works like the ECT but is part of Moore Industries’ FS Functional Safety Series. The SSX/SST Safety Series Isolator and Splitters are exida® approved, SIL 3 capable. The SSX is 2-wire (loop powered), and the SST is 4-wire (line/mains powered). The SSX/SST provides isolation and signal conversion for your SIS (Safety Instrumented System) needs. These units protect and enhance loops and also pass valuable HART® data from the field transmitter to host systems and vice-versa.

The ECT and SST are line powered and supply the voltage to their outputs, so the control systems receiving their outputs must have passive inputs. If your control system inputs are active (providing power), contact us and we can modify the ECT or SST for those loops too.

Other things to consider:

Do you need to pass digital HART signals between the input and outputs?

• The ECT filters the HART component
• The SST passes HART on the outputs (both or neither) 
• The SST is from our line of Functional Safety products

Do you want more information? Download the data sheet. Or visit the catalog.

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Q: Is there a less complicated and economical solution to replace a failed thermocouple than a complete shutdown of a boiler?

A: To address this issue, we need to note that furnaces, boilers, and reactors present an interesting problem when trying to replace a failed thermocouple. Typically to replace thermocouple sensors, the entire furnace or boiler must be shut down for long periods of time creating downtime and lower productivity. Most facilities will try to schedule this type of shut down once every 4 to 5 years because shutdowns are time consuming and costly. Once the boiler is down, most customers will remove all of the sensors, and perform a full replacement, to prevent shutdowns for as long as possible. Facility maintenance personnel with special training in “Small Space Confinement” must do the replacements. 

Because this kind of replacement is costly in both downtime and new sensors, if a sensor fails, that particular temperature measurement is lost until the next maintenance schedule. A facility will not shutdown a boiler earlier than originally scheduled even if more than 50% of the sensors fail before the maintenance schedule, unless there is a critical safety issue requiring shutdown. 

Thermocouples are long, typically about 20 to 40 feet long. They have a small metal pad welded to the tip of the sensors sheath with the weld pads tack welded to the surface of the Protection Tube (pipe) inside the high-temperature area making them typically expensive to replace. 

Moore Industries has a simple and economical solution to this complicated process: The WORM Flexible Temperature Sensor. It lets you replace the sensor without removing the Protection Tube or disassembling the thermowell by just replacing the broken sensor. The High Temperature WORM is a flexible sensor for thermowell temperature assemblies that is available in standard sensor types including 100 and 1000 ohm platinum, nickel and copper RTDs, and J-, K-, T-, E- type thermocouples with step response times 13% faster than standard sensors. The WORM comes in a universal length so there’s no need to stock an expensive array of different sensor lengths. With a quick measurement and a simple trim-to-length, the WORM handles nearly every thermowell assembly.

For boiler tube applications, the WORM ships with a hollow protection tube that includes a weld pad with a thermocouple WORM Sensor that enables sensor replacement from outside of a boiler. The tube is hollow and allows a flexible Worm Sensor to slide down inside the Protection Tube from outside the boiler. This allows the customer to replace a sensor, if it should fail, anytime while the furnace is still up and running.

Do you want more information? Download the data sheet. Or visit the catalog.

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Q. Is there a signal conditioner with 0-2Vdc input and two isolated 4-20mA outputs with 24Vdc?  I need it as compact as possible because I need to install it horizontally in a cabinet. 

A. The ECT-DIN series dual 4-20mA output can be provided with a modified input to accept a 0-2Vdc signal. Moore Industries offers a build option from the factory (the ECT which acts as a Splitter).  The model number for an ECT with this configuration is ECT/0-2V/2X4-20MA/24DC [DIN]. Typical installation of an ECT is a DIN mount so the housing we offer is a DIN-style housing which mounts on 32mm G-type (EN50035) and 35mm Top Hat (EN50022) rails.

The ECT-DIN is rugged as well as reliable and is available in 2-wire (loop) or 4-wire (line/mains) powered models.

The complete family delivers economical solutions for an expansive range of signal interface applications such as protecting equipment and signals by eliminating common electrical paths, amplify signals allowing more instruments on an overburdened loop, isolate signals to prevent erratic measurements, convert signals so field devices can interface with equipment such as an indicator or PC-based SCADA system, split one signal to allow one primary measurement to be sent to two separate systems, and solve bucking power supplies. The ECT has superior signal isolation up to 1500Vrms and stops ground loops, motor noise, and other electrical interference from affecting process signals.

For more information on the ECT, view the product page.

Do you want more information? Download the data sheet. Or visit the catalog.

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Q. Can the SPA² be placed in an existing 4-20mA loop as passive? 

A. The SPA² can be wired using the passive input (+I and COM) in series in your 4-20mA loop. It will add about 20 ohms to the loop.

When ordered with the Analog Output (-AO) option, the SPA² provides a proportional and isolated analog retransmission of the input signal that can be sent to remote monitoring/control devices like a DCS, PLC, PC, indicator or data recorder, making it  completely isolated from the input. All analog parameters can be selected using the SPA² push buttons or the free easy-to-use Intelligent PC Configuration Software.

The SPA² Programmable Limit Alarm Trips provide on/off control, warn of unwanted process conditions, alarm on rate-of-change, and provide emergency shutdown.  Very versatile, the SPA² accepts a signal input from transmitters, temperature sensors, and a wide array of other monitoring and control instruments such as current and voltage signals, 23 RTD Types, 9 Thermocouple Types, resistance and potentiometer devices, and Direct Millivolt Sources. Features of the SPA² include 20-bit input resolution, long-term stability with up to 5 years between calibrations, large 5-digit process and status readout, and isolated RFI/EMI protection.

Learn more about the SPA².

Do you want more information? Download the data sheet. Or visit the catalog.

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Q. Currently, I have an application where I need to configure my SIY input to 0-1mA. Is this possible?

A. Yes, the minimum input span possible on the SIY is 1 mA, allowing you to configure it to 0-1 mA.

Not only can you configure the SIY to 0-1 mA, the enhanced configuration software allows you to trim input sensor readings, customize input linearization curves, program output damping, and calibrate other loop instruments. The SIY handles the majority of current/voltage interface applications you are likely to encounter.

Moore Industries’ SIY PC-Programmable Signal Isolator/Converter combines smart digital technology with advanced analog operation to deliver superior reliability, accuracy, and ease of use. To learn more about the SIY visit our website. 

Do you want more information? Download the data sheet. Or visit the catalog.

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Q. When the 535 1/4 DIN Single Loop PID Process Controller loses power with remote setpoint on, it comes back up in local setpoint mode. Is there a way to have the 535 always come back up in remote setpoint mode when power is restored?

A. Yes, the 535 can come back up with remote setpoint. To make the 535 power up using remote setpoint:

In the configurations menu

1. Go to the SPECIALmenu 
2. Go to PWR. UP: SP
3. Select REMOTE

Details are on page 51 (number on the bottom right or page 58 of the PDF) in the user manual. For your convenience, the image is attached at the bottom of this page.

Check out more on the 535 1/4 DIN Single Loop PID Process Controller.  

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Q. As part of a power distribution process I need a dual signal isolator/converter/splitter that has an input of 0-1mA, outputs of 0-1mA and 4-20mA with 117VAC power input? It needs a DIN housing so it can be mounted in an existing cabinet.

A. Moore Industries has the ECT Signal Isolator, Converter, Repeater, Booster and Splitter and comes in 2-wire (Input-Loop Powered) and 4-wire (Line/ Mains Powered) versions with input 0-1mA, with outputs 0-1mA and 4-20mA, with 117VAC power input in an aluminum DIN rail mounted housing. 

• When ordering, specify the model number in this format: Unit / Input / Output / Power / Options [Housing] 
• To order the model discussed use this model number: ECT/0-1MA/0-1MA,4-20MA/117AC [DIN]

Moore Industries also offers optional NIST Traceable Test Reports with recorded test data.

To read more on the ECT or on other products please go to our website

Do you want more information? Download the data sheet. Or visit the catalog.

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Q. On a 4-20mA gas detector, while we replace the cell, the output reverts to 3mA. This causes the device receiving the 4-20mA signal to go into a critical alarm condition and can shut down a critical process. What device do you have that will keep the output at no less then 4mA? It would also be convenient to have this instrument provide me with a relay alarm contact output when my input goes to 3mA. It can be 24Vdc or 120Vac. It should be in a DIN housing.

A. Moore Industries CPT PC-Programmable Temperature Transmitter and Signal Isolator/Converter CPT/HLPRG/0-20MA/117AC/-C [DIN] can be used for this application.The selected model allows you to limit the minimum and maximum output, even when you are replacing the cell. The alarm relay option allows you to set an alarm at whatever level below 4mA for maintenance notification. Figure 1 below shows a configuration that would work for your application. A configuration cable is required to utilize the PC programming capability. 

The CPT has a menu selection for upper and lower limits. You can set the low alarm limit there, such as 3.5mA.

Figure 1. CPT PC Configuration

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A few years ago, we heard from a customer that they had many PTT, Potentiometer Transmitters in use at a large dam on a branch of the Colorado River. The dam is part of a system to deliver water and power via one of the largest public power utilities for consumers and businesses in the southwest.. 

All of the PTT units had operated flawlessly in service, even after they were sent back for refurbishment due to capacitor wear out (dry out of electrolytic) four years after the calculated 15-year lifespan.

The customer inquired of whether or not we had a site programmable potentiometer transmitter that was line powered that he could start keeping in stock and consider replacing the PTTs over time.  This would alleviate the downtime he has while waiting on PTT refurbishment.

Moore Industries recommended the CPT, a PC-Programmable Temperature Transmitter and Signal Isolator/Converter, as the most economical product suited to the application at the time.

Today, we would recommend the 4-wire (universal line/mains-powered) SPA2 Temperature Alarm Trip/Transmitter with the analog output option. The SPA2 can be ordered with two or four alarms and accepts a potentiometer input of 0-4K Ohms as standard and can accept higher range inputs with externally fitted custom input resistors (contact Moore Industries for assistance). The SPA2 is push button field configurable or PC programmable and comes standard with a display. The analog output can be field configured for either voltage or current, any range  between 0-10V or 0-20mA and supports reverse, split range or linear outputs. The universal power supply input (22-375VDC or 90-260VAC) and full field configurability makes the SPA2 an ideal universal transmitter to keep in stock to meet a variety of last-minute instrument needs.

See the SPA2 datasheet for a full list of features at or visit the catalog.

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Moore Industries-Europe Inc. (MIE) is proud to announce it is involved in several upcoming future events.

• On February 7^th, 2018 MIE will attend the EDF Energy Heysham Nuclear Power Plant Industrial Exhibitions on Ageing and Obsolescence Solutions. This event is by invitation only.
• The Hazardex Conference and Exhibition on February 28^th through March 1^st.  The event aims to strengthen and expand the community that looks to the Hazardex website and journal for industry intelligence and information. Moore Industries’ STZ Functional Safety Dual-Input Smart HART Temperature Transmitter is nominated for its contribution to safety.
• MIE is a Headline sponsor for The Nuclear Engineering for Safety, Control and Security (C&I and Safety) Conference, March 14-15, 2018 at the Manchester Conference Centre, UK. The 6th Nuclear Engineering conference provides a forum for hearing from the ONR about what is expected of personnel working in nuclear facilities.

Established in 1977 to provide 'World Class' instrumentation and interface solutions for the most demanding of process engineering customers in the UK, Ireland, Europe, Scandinavia, Middle East, Africa and Russia. We have built a reputation for the quality of our product and our direct sales force and internal staff for quality in customer service, offering responsive technical support and systems solutions where reliability and accuracy, combined with long and cost effective product life matters.

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Hazardex is an exhibition and conference that focuses on protecting plant, process and personnel. The conference incorporates world-renown experts and leaders in process safety while refining decades of subject matter experience from across Europe that fosters a practical knowledge forum and exchange. This year the STZ Functional Safety Dual-Input Smart HART Temperature Transmitter, with Associated IS Option has been nominated for its Contribution to Safety - A product, system or service which has made a significant contribution to safety in hazardous area environments.

If you are a Hazardex journal & website reader/user and like Moore Industries’ products, please vote for us. More information on voting is can be found on the Hazardex website.

STZ product information can be found on our product page. (This voting page is closed now)

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As we do every year, Moore Industries is closing its worldwide headquarters over the holidays to give our employees a chance to celebrate with their family and friends. Moore Industries’ offices will be closed starting Wednesday, December 24 and will not reopen until Monday, January 5. 

During our break, a limited number of employees will be available to handle emergency shipments; however, we strongly encourage you to place any orders or resolve any pending issues before the holiday break.

Moore Industries has also been collecting donations for the Toys for Tots campaign. Donation bins are located in our office where employees can drop off a new and unopened toy that will be given to underprivileged children. By filling up the donation boxes at our office, our employees help to put a smile on the faces of needy children.

Do you want to get involved with the Toys for Tots campaign? Visit their website to find out where a donation location is in your area. You can also donate money or volunteer at one of their warehouses.

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Q: I want to use a SIX Signal Isolator/Converter in a loop with a cable run of 1200’. Are there cable parameter values (i.e. maximum inductance/capacitance) that must be met in order to maintain the FM Non-Incendive certification? 

A: The certification by FM of the SIX for Non-Incendive Class 1 Div 2 does not include any cabling restrictions. The maximum cable length is a function of the available compliance voltage and the total resistance (loss in the wire and device loads).

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Congratulations to Raymond Ko of Macguire and Crawford, who was named Salesman of the Year for 2014! Moore Industries Regional Sales Manager Greg Feliks passes along a bit of information about Raymond:

"He has been a key salesman at MacGuire and Crawford for over 25 years after an earlier career as a regional sales/service manager for an instrument manufacturer. He is a consistent top performer for Moore Industries with multiple NCS/panel projects, MooreHawke projects, and sizable project orders for isolators, temperature assemblies, and more.

Raymond’s most recent project success in 2014 was a single order for over 110 STA safety alarms. He is tireless in pursuit of projects, a great help to his customers, and has a deep technical familiarity with most everything from Moore Industries."

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Q: The SRM Safety Relay Module only has three contacts. Is it possible to add extra contacts? Also, is there specific wiring required to obtain a SIL 2 rating?

A: You can connect a wetted contact to the power terminals of two SRMs in order to have more than three contact outputs. Connect jumper wires to the input terminals of these SRMs. The wetting current must be sufficient to drive the coils of the two SRMs.

The SRM installation manual has detailed directions for installation in Safety Instrumented Systems (SIS) as well as information about connecting the coil (input) side to either dry or wetted contacts. In addition, Figure 5.3 in the manual shows how to connect a wetted contact to a single SRM.

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Moore Industries Sales Application Engineer Robert Marousek was in Carson, CA on July 21 to help showcase our products at the ISA Los Angeles Instrumentation 2015 show. The event is billed as “the largest exhibition, technical training and career fair on the West Coast dedicated to the design, application, installation, operation and maintenance of state-of-the-art instrumentation, process control and process automation.” It represented an opportunity to present our instrumentation to engineers in the field and answer questions about our solutions.

Moore Industries’ products were exhibited as part of the booth of Patten Systems, our sales rep in Southern California. Robert complemented the Patten crew at the show with their knowledge of our product line, particularly John Capitano.

We had a wide range of products displayed at our booth during the event, including our FS Functional Safety Series and a panel showing how the SPA² Programmable Limit Alarm Trips can increase the accuracy of temperature readings.

Moore Industries will also be part of these shows during the rest of 2015. Make sure to see us if you are planning on attending:

• Fieldbus Seminars in Calgary (Sept. 22), Edmonton (Sept. 24) and Long Beach, CA (Nov. 5)
• Emerson Global Users Exchange in Denver (Oct. 12-16)

Do you want more information? Download the data sheet. Or visit the catalog.

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California's largest oil spill in 25 years occurred when at least 101,000 gallons of crude oil spilled out of a pipeline near Santa Barbara. While the cause of the rupture is still unknown, federal investigators found that almost 80 percent of the pipeline had been worn down due to corrosion near the point where the break happened. This accident highlighted the need to take steps to mitigate the impact of corrosion on pipelines and other sites.

A popular method of achieving this is cathodic protection, where the important metal in a pipeline is made into a cathode. According to Corrosionpedia:  

“Cathodic protection is a widely used method for controlling the corrosion of metallic structures in contact with most forms of electrolytically conducting environments such as soils, seawater and natural waters. Cathodic protection essentially reduces the corrosion rate of a metallic structure by reducing its corrosion potential, bringing the metal closer to an immune state.”

Larger pipelines use Impressed Current systems to protect the metal. According to Corrosionopedia, “Impressed Current systems employ inert anodes and use an external source of DC power to impress a current from an external anode onto the cathode surface.”

Engineers need to know that the cathodic protection system is in place and operating at the right levels to maintain a safe operating environment. Moore Industries helps companies with this with our CPMS Cathodic Protection Monitoring System. It is specifically designed to monitor the critical current and voltage levels of one or two transformer rectifiers in Impressed Current Cathodic Protection Systems. It provides an engineered, field rugged and compact monitoring solution for reading and data logging specific Vdc, mV and mA inputs with embedded digital communication protocols  including MODBUS/TCP over Ethernet and dual MODBUS RTU ports (master or slave capabilities).

The CPMS also accepts up to four discrete (contact closure) inputs from each impressed current system. Using an internal control engine, the CPMS can be programmed with internal set points that relate to normal operating conditions within the cathodic protection system. Should monitored parameters go outside of selected limits, or if power to the cathodic protection system is lost, the CPMS alerts of the unwanted conditions at the control system over the data link.

The CPMS offers several advantages:

• Flexibility: CPMS I/O capabilities can be expanded with the addition of Moore Industries' NCS NET Concentrator System modules.  This allows the CPMS to handle current inputs and outputs, temperature (RTD and thermocouple) inputs, additional discrete inputs and relay outputs.
• Ease of Installation and Use: The CPMS sets up in minutes using simple web-based software. Special skills or programming languages are not required. It also offers a standard and open OPC interface that delivers plug-and-play integration with popular off-the-shelf PC-based HMI/SCADA packages.
• Data Logger with Battery Backup:For historical performance trending and analysis, the CPMS can archive up to 64,000 time and date stamped values.
• GPS Time Receiver: The CPMS can be ordered with a GPS Time Receiver option that allows the syncing of CPMS clocks in order to control multiple rectifiers. This facilitates monitoring the effectiveness of the cathodic protection system and structure.

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When precision synchronizing of time is required on your processes, automatically coordinate all of your activities using Moore Industries’ NCS NET Concentrator System time sync features.

In July 2015, a Simple Network Time Protocol (SNTP) server feature was introduced into the EMM Ethernet/MODBUS Interface Module of the NCS, the CPMS Cathodic Protection Monitoring System and the microNCS MODBUS RTU Master and Distributed I/O System models. Previously, any of these models could be synchronized to an external SNTP time server via an Ethernet link so that each NCS site has the precise Coordinated Universal Time (UTC). Now, these models can also become their own SNTP server to provide timing to one or several compatible SNTP devices including the EMM, CPMS and microNCS along with other instrumentation or PLCs.

The CPMS and microNCS also have a new GPS Time option with an internal GPS receiver providing precise UTC time. Remote sites with no ability to connect to an existing external SNTP service can now obtain the same time as other remote sites anywhere in the world. The remote site equipped with GPS Time also automatically becomes an SNTP server to serve instrumentation from other vendors and PLCs capable of using SNTP.

We now have two solutions to provide high accuracy time for process coordination activities without using expensive “time server” instruments – the SNTP connection available in the NCS family and the GPS Time option available in the CPMS and microNCS modules. This gives you a high accuracy time method regardless of the availability of an Ethernet connection.

With the NCS family, configuration of time requires simple connection of an Ethernet cable and activating the feature via a webpage configuration screen. This clock runs continuously – even when the NCS unit is powered down. Configure the NCS’s clock using one of the following methods to best meet your precise timing application:

• Utilizing the configuration webpages, select “Workstation Time” to set the internal clock to the time of the host computer (such as a laptop). The internal crystal oscillator clock is set and then maintains this time.
• Select “Manually” to set a time other than the local time.
• Select “Use Time Server” along with entering the Ethernet SNTP at your local facility, one external to your plant, or the IP address of another applicable NCS family unit. This clock will be accurate to the SNTP server clock. As the SNTP clock updates periodically, so will the NCS’ internal clock
• Select “GPS” (requires the GPS Time option on the CPMS or mNCS). The unit will now be synchronized with the GPS clock.

Should the signal be temporarily lost from the SNTP server (such as a temporary loss of Ethernet connection) or the GPS (such as having fewer than four satellites locked), then the NCS’ internal clock automatically maintains time until the SNTP server or GPS service is restored.

There are several applications where these features are extremely useful:

Cathodic Pipeline and Tank Protection

A large pipeline and storage tank complex may require simultaneous shutdown of several cathodic systems at the same time to minimize contamination of the “reference signal” should one of the nearby rectifiers continue to operate. Using the CPMS’s internal clock to know when to perform shutdown and readings, this can be accomplished with the cathodic system unattended. Data is collected using the data logger and extracted remotely at a convenient time later. This eliminates the need for human intervention to synchronize the exact time of a few to hundreds of cathodic protection sites.

Transportation Switch Logging

This requires the precise timing when opening gates, transitioning vehicles and performing ID recognition. Using the GPS and SNTP features provides accurate time stamping of all process activities worldwide.

Transportation

Vehicle, trailer, pallet and other transportation systems stay synchronized when the GPS Time feature is activated. No additional time corrections are required for the internal time bases of the individual portable sites. Precise latitude, longitude or altitude data is available in addition to time. Contact Moore Industries for technical details.

Enterprise Timing

Coordinate the precise timing of two or more independent network activities such as power grid transfers and inter-company pipeline transfers in which the network of one site is not permitted to be physically linked to another site for reasons such as network security. Independent GPS at each network site assures precise time coordination for transfers between facilities.

Notes:

• Access to an external SNTP server requires an Ethernet connection to the outside world. Make sure these network connections aren’t blocked by the security firewalls of your IT department.
• The GPS feature requires an external antenna that can “see” the orbiting GPS satellites without obstructions (such as trees, buildings or ceilings). A building’s walls and ceilings will typically block the GPS RF signal from the satellites so the external GPS antenna may need to be relocated. There is no security firewall involved in GPS satellite protection.
• For process control, the precise timing for a small to large system is considered to be timing precision of approximately 0.1 seconds. This includes automatic correction of time delays of wireless links, LAN repeaters and more without human intervention.

Do you want more information? Download the data sheet. Or visit the catalog.

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Oil & Gas Production News ran Moore Industries’ new white paper “A Practical Guide to Temperature Accuracy” in the July/August edition of its publication. The paper shows how to select the best sensor for a particular application and ways to improve the accuracy of the sensor. Written by National Sales Manager Gary Prentice, it details the reasons why 4-wire RTD sensors are almost always the best choice for high-accuracy temperature applications.

You can download a PDF version of “A Practical Guide to Temperature Accuracy” along with other technical white papers from our web site.

In addition, Director of Engineering Tina Lockhart was part of a panel of experts discussing “Should You Use Solid-State or Electromechanical Relays?” in this month’s issue of Control Design. The article discusses the various benefits for manufacturers using either electromechanical relays (EMRs) or solid-state relays (SSRs).

Lockhart points out that that it’s beneficial to use EMRs for any application where you need closed contacts when there is no power. Additionally, SSRs are particularly useful in applications with frequent on/off cycles because of their long cycle life.

You can find more media coverage of Moore Industries at the "In the News" section of our website.

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Q: We are interested in your HCS HART Concentrator System. What are the options for converting a single HART transmitter or for converting 16 transmitters with one unit?

A: You don’t have to choose between connecting one or multiple transmitters to the HCS. A single HCS unit can be configured by the user to interface with a single drop HART loop (one HART device) or to a multi-drop HART loop (2 to 16 HART devices).

In point-to-point HART mode, the HCS is set to monitor a single instrument. All process and diagnostic data carried on the HART data string is converted to MODBUS RTU.

In a digital multidrop HART network, up to 16 HART instruments digitally communicate on the same wires. The HCS can be set to monitor any or all instruments and/or valves within the network. Only one MODBUS address, and one communication link (such as twisted wire pair), is needed to send the process and diagnostic data from up to 16 HART devices to a MODBUS host.

Do you want more information? Download the data sheet. Or visit the catalog.

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Under normal conditions, the loop resistance of thermocouples in service will gradually change over time. However, it is not uncommon to see the resistance of thermocouples start to quickly rise or even spike.

An unusual increase in thermocouple resistance can be caused by various factors including:

• Corrosion
• Poor junction connections with T/C extension wire
• Extended use in oxidizing atmospheres
• Wire thinning
• Hot end junction failure

This sensor degradation can compromise thermocouple measurements and eventually lead to sensor failure. This can be avoided when using the THZ³ and TDZ³ Dual Input Smart HART Temperature Transmitters and the STZ Functional Safety Dual Input Smart HART Temperature Transmitters. They can be configured to monitor the thermocouple loop for resistance changes and alert the user before the sensor fails.

On installation, the transmitter captures a baseline resistance level and continuously monitors the thermocouple resistance. As shown above, the THZ³ and TDZ³ can be configured to send warnings or alarms once the resistance passes set levels. Detecting these changes in resistance levels can help detect and reduce sensor failures and a subsequent halt to processes.

Do you want more information? Download the data sheets: THZ³ and TDZ³ or STZ or see the Temperature Transmitters in the online catalog.

Need to get price or availability or have a technical question? Send us a message using E-Help.

Find out about the best method for maintaining continuous communication between a control system and instruments on a FOUNDATION fieldbus H1 or PROFIBUS PA segment while attending upcoming Fieldbus Foundation End User seminars in Canada. Visitors to the booth of MooreHawke (a division of Moore Industries) can see a demo of the TRUNKSAFE Fault-Tolerant Fieldbus System when they attend seminars in Calgary on Sept. 22 or Edmonton on Sept. 24.

TRUNKSAFE is a cost-effective and highly reliable solution that creates a completely redundant physical fieldbus layer. In the event of a failure on a fieldbus segment, TRUNKSAFE makes it possible for the control system to switch immediately and automatically to a redundant path. This helps prevent the loss of a complete segment, the shutdown of associated plant or equipment, and potential catastrophic process failures.

Designed for important and plant-critical fieldbus segments, TRUNKSAFE utilizes two trunk cables (or “legs”) for physical layer redundancy to ensure no single point of failure will shut down the network. Under normal operation, the fieldbus segment is terminated at each end of the segment at the TRUNKSAFE Redundant Power Conditioners. TRUNKSAFE maintains fieldbus communications throughout the entire segment until a fault (open- or short-circuit) is detected. Upon fault detection, theTRUNKSAFE Device Coupler initiates its automatic segment termination so that the healthy leg is properly terminated. This patented, automatic system for fault detection and termination allows uninterrupted fieldbus communications throughout the segment. The host is informed about the fault via a contact closure output.

The upcoming Fieldbus Foundation events in Canada are free and you can register at their website.

Do you want more information? Download the data sheet. Or visit the catalog.

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Q: We have been using the ECT-DIN in our applications where we need to split one 4-20mA input to two outputs. The model number for our current units is ECT/4-20MA/2X4-20MA/117AC/DIN. We now need to split a signal to three outputs. Do you have a product that will help us to do this?

A: If you need the splitter to provide the loop voltage for the third 4-20mA output, as you did in the previous installation, you can use two of the ECT/4-20MA/2X4-20MA/117AC/-TX [DIN] models and wire your 4-20mA in series to each of the ECT's inputs. This will provide you with up to four isolated outputs. This ECT model also comes standard with a -TX option which provides loop power, if required, to a power a two-wire transmitter.

An alternative option would be to use our MIX four channel isolator, model number MIX/4X4-20MA/4X4-20MA/12-42DC [DIN]. The input signal needs to be connected in series to at least three of the four inputs to meet your requirements. This option will also provide you with one spare channel. 

It is important to note that your receiving device will need to provide the loop power for each channel since each of the four MIX channels are output loop powered (passive outputs).

Do you want more information? Download the data sheet. Or visit the catalog.

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Moore Industries has added a new section to our website highlighting how the EMPHASIS assessment tool is applied to our products. Moore Industries worked with the Control and Instrumentation Nuclear Industries Forum (CINIF) in the United Kingdom in the original development of the EMPHASIS assessment tool for "Smart" instruments, with the STA trip alarm achieving SIL 2. 

Since 2005 EDF Energy has assessed and qualified Moore Industries Smart devices using EMPHASIS including:

• SPA²Programmable Alarm Trip
• STA Safety Trip Alarm
• TRY Temperature Transmitter

This section of our website has information relating to the EMPHASIS assessment tool. This includes a link to download our recent “Vetting Smart Instruments for the Nuclear Industry” white paper, which details how Moore Industries has designed and configured key products for nuclear safety-critical applications – particularly in the United Kingdom.

Released in 2005, EMPHASIS provides a common framework for determining the suitability of devices in nuclear industries. Earlier designs for process control and safety systems used “good engineering practices and experience” as guidelines. As functional safety awareness grew and software-based products became more complex, standards such as IEC 61508 evolved to create more comprehensive guidelines for implementing safety.

Moore Industries’ compliance with IEC 61508 significantly contributes toward the EMPHASIS assessment for Production Excellence, one of two “legs” used to substantiate safety to the regulator. The second leg involves Independent Confidence Building Measures – measures and techniques such as Static Analysis or Statistical Testing on a product’s source code to prevent potential systemic failures and also taking into account the application demands of the device to be deployed.

Do you want more information? Download the data sheet. Or visit the catalog.

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Moore Industries catered its annual Father’s Day taco lunch earlier this year. A full taco station was set up in our parking lot, and employees were able to get fresh and delicious tacos. At the taco bar, they could choose salsa, cilantro, onions and other items to add, along with free drinks.

We do this to honor the dads at our worldwide headquarters, but our female employees were also welcomed. 

Q: Will the SIX Signal Isolator/Converter pass input signals through if the output is disconnected? We will be replacing our DCS, so we need to know if the input side will continue to work while the DCS is disconnected.

A: The SIX’s input has a passive 50 ohm resistance. Connecting the input of the SIX in series with the loop is the same as adding a 50 ohm resistor. This passive resistance is maintained whether the SIX’s output is receiving power or not.

Stay up-to-date on future developments and enhancements on this product and our other product lines, sign up for our customer newsletter.

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Q: I have an application where we are getting a very weak 4-20mA signal back to the pump control panel. Will using an ECT unit (model ECT/4-20MA/4-20MA/117AC-TX (ECD) help to boost my signal at all?

A: I assume that by “weak signal” you mean that the current input to your pump control panel is unable to reach 20mA? If this is the case you may have too many devices (too much voltage drop) in your loop now. This is often referred to as an overburdened loop. You may need to check the total loop resistance to assure that it is within your required specifications. 

Adding this ECT to the loop will add 50 ohms to the input circuit, so if the resistance is already high, it will need to be reduced (possibly by moving devices to the output side of the loop). This ECT also has the ability (not required) to power the input loop (24v at 25mA), provides up to 1200 ohms of drive capability on the output side of the loop, and provides full three-way isolation between input, power and output. 

Do you want more information? Download the data sheet. Or visit the catalog.

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Here's a quick story from Mark Kuhlman at Temco highlighting just how durable our products are - even in the most extreme conditions:

According to Mark, one of his clients had a coal mill explosion and fire in a plant where our 535 Controllers were in use. Fortunately, no one was injured, but damage to instrumentation and other equipment near the source of the incident was extensive.

During cleanup, the client came across a 535 that was installed about 50 feet from where the explosion and initial fire occurred. To their amazement, it was operational despite having sustained obvious cosmetic damage because of the fire and explosion.

The photo above shows you just how severe the damage was to the 535 (click the gallery image below to see a larger view). It truly did take a licking and kept on ticking. This is a very extreme example of the reliability of Moore Industries' products. Our products are engineered and built to the highest specifications of quality and durability. When you buy our instrumentation, you can feel comfortable that it will operate in the harshest and most challenging situations.

Do you want more information? Download the data sheet. Or visit the catalog.

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