Answer Posted / rajkumar

Few things have to be taken on Account

1, The process fluid, Say if its Sulphuric Acid mean you have
to consider the metalargy for pressure gauges,
2, Type of PG, say when you gonna Install on a Pump Discharge
head mean there will be more Vibration, so you have to go
for Diaphragm type of PGs, else Fill Fluid,
3, Normally we choose the Range of PG by multiplying the
operating pressure with 1.5, Say operating pressure 5
Kg/Cm2 means the PG range must be 0 to 7.5 Kg/cm2.
4, Depends upon the Pressure range, PGs also Differ.

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