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[deltaChe]

I have two pressure transimitter (671-PIT-010, 671-PIT-020) but don't know how to select
the High and High High alarm value and margin for(671-PIT-010).
Futhermore, there is differentil pressure alarm between PIT-00 and PIT-020,(seems cascade
control, one output is other's input) and
how do we selecte these differentail pressure alarm value(say H=1) shutdown value
(say HH=3).

Can any master in process/I&C field give me a general or through explination?


Thank you very much for your help.

Edited by hswang2, 17 June 2010 - 07:23 AM.