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Can we use differential pressure transmitter to measure closed vessel or closed line pressure? All the dpt transmitter are absolute pressure transmitter. so if we insert one leg of that transmitter in close line that is not exposed to the atmosphere and other leg left open in the atmosphere, then can it measure exact gauge pressure. someone said that it will not measure exact pressure as dpt can only be used to measure pressure exposed to the atmosphere as per my above arrangement explained? If not why.
Thanks in advance.
Thanks in advance.