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What is Gage Pressure - PSIG?

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58 views asked Mar 18, 2015 by Joe Mahini

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Measures pressure referenced to local atmospheric pressure and is vented to the atmosphere. When the pressure port is exposed to the atmosphere, the transducer will indicate 0 PSIG. This occurs because the pressure on both sides of the diaphragm is the same and there is no net output. Venting is accomplished by means of a small diameter hole located near the transducer’s electrical termination – connector or cable. The vent hole contains a porous, stainless steel disk designed to filter out harmful airborne particles from entering the transducer. Depending on accuracy class, PSIG transducers above certain pressure levels may in fact be sealed. This can be done because the possible measurement errors due to sealing will stay within the accuracy specification of the transducer.
answered Mar 18, 2015 by Joe Mahini

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