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Get the Most Out of Your HART Devices

Get the Most Out of Your HART Devices

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.

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.

You can see an example of how the HCS is used in remote natural gas settings with our online video.

These are just a few of our most popular HART products. For more information, check out the Smart HART Loop Monitors and Interfaces section of our website.

Published: July 17, 2015
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