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Heater Differential Temperature Monitoring and Alarming Using Associated IS

Heater Differential Temperature Monitoring and Alarming Using Associated IS

Challenge: Measure inlet and outlet temperature of a process heater using existing three-wire RTDs and provide a 4-20mA process variable signal, representing the differential temperature across the heater, to the Basic Process Control System (BPCS). The measurements are in a hazardous area and plant standards require the use of a certified IS system.

Published: October 23, 2017

EHELP: I need to boost a 4-20mA HART signal...

EHELP: I need to boost a 4-20mA HART signal...

Q. I need to boost a 4-20mA signal to get a Fisher FIELDVIEW DVC6200 to respond to a control signal. What could I use?

Published: October 18, 2017

SIY: PC-Programmable Signal Isolator/Converter

SIY: PC-Programmable Signal Isolator/Converter
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.
Published: October 12, 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
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