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I am a instrument technician. recently i attend interview and face one of question for DP transmitter ,the client asking about the calibration of DP transmitter ,am answer the calibration procedure, they will ask one more question. why open LP side in atmosphere? i did not answer that question. so please help me and explain the particular question. Dear firends waiting for your valuable replay
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Answer Posted / ahmed
Calibration coefficient we titration differential pressure device through the injection amount of pressure in the high side and at the same time the low side open to atmospheric pressure, because pressure air fixed and unchanging and the device works on the difference between Aldgate if the equation realized there atmospheric pressure fixed and your controlled pressure from here the differential pressure is measured
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