Re: [foxboro] flowrate

We do alot of rate-of-change monitoring ... whether it's temperature,
pressure, or level (ie, flow).  I'm surprised that there is nothing built
into any block that does this.  We use a simple CALC routine that samples
the point, stores it to memory, re-samples it, and uses a factor based on
the period of the CALC block.

REALM provides rate-of-change alarming, so it must have an internal value,
but I can't see that it's available as an output.

This seems like such a no-brainer that I feel like I'm missing something.

Brad Wilson
Process Control Engineer
ExxonMobil Chemical Co
Edison Synthetics Plant
732-321-6115
732-321-6177 fax
Brad.S.Wilson@xxxxxxxxxxxxxx

 
 
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