Differential pressure measurement indication, control, and communications
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Actuating Unit(DPU)
PRIME Indicators and switches are actuated by a rupture-proof bellows differential pressure unit(DPU)with integral temperature compensation.Available in two models:197A(Single Bellows) and 224C(Dual Bellows);
The 197A is a special single bellows unit designed for low-pressure air or gas applications(100PSI/6.9bar max)and maximum DP Pressures of 1PSID-with available ranges from 0-4"to 0-10"w.c.(0-10 to 0-25 mbar)maximum.
The 224C is a dual, liquid-filled,bellows designed to withstand repeated overanges equal to the safe working pressure of the housings without any change in calibration.
The 224C SWP ranges from 500PSI(34bar)to 10,000 PSI(689bar),with DP Ranges from 0-30"w.c to 0-1.000PSI.NACE compliant materials available upon request.