Answer / abhishek chourey

DP transmitter can be calibrate by two type 1st loop & 2nd isolate in both calibration we need pressure calibrator that should be calibrate by authorized laboratory.

loop calibration:- in this calibration pressure apply to DP transmitter set the pressure on Calibrator and check on display of DP transmitter.

Isolation Calibration:- output measure in form of 4-20 mA and calculate 4-20 with respect to full range of Instrument.

Answer / santosh kumar

High side presser and low side atmosphere then callibeat transmitter.

can any one pl explain me in brief that how we select the leakage classification in valve,means for liquid or gas there is any standard for selecting leakage classification or its depend upon valve size or any any other parameter.

3 Answers  

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why metallic housing is provided of solenoid valve.

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which type of signal used in instrument?

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How to calibration a control valve?

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