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Entries tagged with: Alarm

I Don’t Want No D*** Diagnostics!

After a false trip incident, I heard a control engineer express his displeasure with the automatic diagnostics in a new safety rated transmitter.  The transmitter diagnostics were annunciated by sending the analog current out of range.  In this case, the current went to 3.6 milliamps.  The problem was that…

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To Be an Alarm…Or Not to Be?