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EHELP: STA Latching Checkbox

EHELP: STA Latching Checkbox

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? 

Published: January 10, 2017

EHELP: Signal Conditioner with Multiple Inputs (RTD)

EHELP: Signal Conditioner with Multiple Inputs (RTD)

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?

Published: December 13, 2016

EHELP: SPA2 has SIL2 rating

EHELP: SPA2 has SIL2 rating
Q:  Does your SPA2 have a SIL 2 rating?
Published: November 29, 2016

EHELP: STA Analog Output Protection

EHELP: STA Analog Output Protection
Q:  In specifying the Moore STA / HLPRG / 3PRG / U / -AO [DIN] our end user has a concern about electrical protection for the analog output. The desire is to use 4-20mA Output Loop Voltage sourced by DCS for the AO; however, this voltage may fault at up to 132 VAC. Should our design add fuse protection in the external voltage circuit upstream of the STA to protect it from these surges? Or does the STA include features that protect it from these faults?
Published: October 4, 2016

EHELP: What is the 2 in IPT2

EHELP: What is the 2 in IPT2

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.

Published: September 20, 2016
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