How to calibrate an absolute pressure gauge transmitter?»
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How to calibrate an absolute pressure gauge transmitter?» Could someone tell me?
Differential pressure transmitter shifted by one atmosphere of pressure
The calibration method using a standard vacuum source and a standard ammeter is the same as that for calibrating ordinary pressure transmitters.
The key is to find a reliable standard vacuum source
A vacuum pump is required, along with a standard vacuum gauge (whose tolerance is more than 1/3 of the tolerance of the absolute pressure transmitter). The standard and calibration methods shall be followed in accordance with JJG 882-2004, \"Specifications for the Calibration of Pressure Transmitters\".
By the way, for absolute pressure transmitters, never estimate the zero point