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E-HELP: Adjustable Deadband Thermocouple Alarms

E-HELP: Adjustable Deadband Thermocouple Alarms
Q: We currently are using TCA Thermocouple Alarm units in our plant (model TCA/K-10MV/SX1/117AC/[STD]). The user’s manual says that the deadband is fixed at 1% of the input range. However, we need the TCA to trip at a set point of 190°F and reset at 180°F. Is this model capable of meeting this requirement and do you still manufacture this model?
Published: September 11, 2015

Learn When Logic Solvers Are Appropriate for Overpressure Protection Systems

Learn When Logic Solvers Are Appropriate for Overpressure Protection Systems
An overpressure situation in pipes is dangerous and can lead to significant damages to property, pipe ruptures and even injuries and death. Having a system in place to prevent an overpressure situation is critical and one way to accomplish this is with a High Integrity Pressure Protection System (HIPPS). 
Published: July 13, 2015

E-HELP: Monitoring and Alarming on Critical HART Data with the HIM

E-HELP: Monitoring and Alarming on Critical HART Data with the HIM
Q: Is the SPA2 Limit Alarm Trip compatible with HART and can you pass HART through the unit? Our application is a control valve with a loss of signal cutout. We are using the SPA2 for this with position feedback via a Tri-Loop.

A: The SPA2 HLPRG model can be added to an existing HART loop without disrupting the existing HART communications on the loop. However, the optional analog output of the SPA2 will not contain any of the HART digital components so it won’t be useful for connecting to the Tri-Loop.

Published: June 15, 2015

E-HELP: Setting Multiple Trip Setpoints with the ECA

E-HELP: Setting Multiple Trip Setpoints with the ECA

Q: I am interested in an ECA alarm unit, model #: ECA/4-20MA/DH1H1/24DC/DIN. I have three questions:

1. I have a need for three different trip setpoints based on the same transmitter input. How can I accomplish this with the ECAs? Can I use two ECAs using the second ECA with a 1-5VDC input or can the 4-20mA signal be run in series through both ECA inputs?

2. Do I need to specify the -RF option to get the RFI protection? And is the testing for both radiated and conducted susceptibility (RS103, CS114, CS115)? Is it possible to see the test report for the EMI/RFI testing?

3. Is DIN-rail the only mounting option?

Published: June 9, 2015

Configuration Video Tutorials Now on YouTube

Configuration Video Tutorials Now on YouTube
Last month we told you about a new video tutorial on the configuration of the THZ3 and TDZ3. We’ve now updated our YouTube page with video tutorials from Customer Service Director Bob Croughwell on how to use the included software to configure several of our most popular products:
Published: May 14, 2015
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