1.unit of pressure kg/cm2,psi,bar,atm,inchs of h2o,mmof h2o 2. unit of fl

units of pressure,flow, level,temperature?
principle of pressure gauge?
calibration of pressure tx., level tx., temperature tx.flow
tx.?
description of two wire ,three wire and four wire R.T.D.?
WHAT IS INPUT AND OUTPUT OF TX.?
WHAT IS INPUT AND OUTPUT OF R.T.D. AND THERMOCOUPLE?
WHAT IS HOT LOOP AND COLD LOOP?
WHAT IS INPUT AND OUT PUT AND OUTPUT OF D.C.S. AND P.L.C.?
PRINCIPLE AND WORKING OF HART?
WHAT IS PNP AND NPN PROXY?
CALIBRATION OF PRESSURE ,LEVEL ,FLOW SWITCH?
DESCRIPTION OF FIELDBUS FOUNDATION?
WORKING OF SOV.?

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Answer Posted / sathish

1.unit of pressure
kg/cm2,psi,bar,atm,inchs of h2o,mmof h2o
2. unit of flow
gpm,1/min,hour,cubic feet per hour,per min,metre cubs per
min& hour.
3.unit of level
mostly related with pressure.

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