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Sharing Process Variables: Quad Isolator

Sharing Process Variables: Quad Isolator

Problem: When sharing a Process Variable (PV) with multiple systems, the connection needs to be thought out carefully. Sending a signal go to more than one PLC needs to be well thought out just as carefully.

Published: November 7, 2017

Detailed Description of Converting Dry Contacts to Analog Signals

Before converting a dry contact to an analog signal it is important to first determine what signal levels you will need.  Since the TMZ accepts a 4-20mA signal then we can choose any current values within 4mA and 20mA.  For this application we chose 'NOT FULL' to be equal to 20mA, and “NEAR FULL” to be represented at 4mA. 

 

Published: October 11, 2017

Remote Level Monitoring in Tank Farms

Remote Level Monitoring in Tank Farms
A Moore Industries customer wanted to monitor levels in new storage tanks that are remotely located on their tank farm and not connected to their existing MODBUS network. 
Published: October 11, 2017

Temperature Q&A with JR Madden: Easy Thermocouple Replacement

Temperature Q&A with JR Madden: Easy Thermocouple Replacement
Q: Is there a less complicated and economical solution to replace a failed thermocouple than a complete shutdown of a boiler?
Published: August 8, 2017

Temperature Q&A with JR Madden: Thermocouples

Temperature Q&A with JR Madden: Thermocouples
Q: A Type K thermocouple is being used in a high temperature furnace environment for temperature measurementHowever 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?
Published: May 22, 2017
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