What is the typical validity period for the calibration of pressure gauges used in tests?
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The pressure gauge used for testing has been calibrated and is within its calibration validity period; its accuracy must be at least 1.5 grade. The full-scale value of the gauge should be 1.5 to 2.0 times the maximum test pressure. There must be no less than two pressure gauges.
All calibration certificates for measuring instruments specify the calibration date and the expiration date; **the period specified for calibration of an instrument is actually its validity period, and regardless of whether it is being used or not, it must be recalibrated upon expiration.
According to the calibration regulations specified in JJG 52-2013 \"General Pressure Gauges, Pressure-Vacuum Gauges, and Vacuum Gauges with Elastic Element Sensors\", it should generally not exceed half a year.
The general inspection cycle is 6 months
Pressure gauges (those installed on pressure vessels as well as those in other locations) are to be calibrated once a year. Pressure gauges that are subject to mandatory inspection must be calibrated every six months in accordance with the regulations set by the metrology authorities
The validity period of a pressure gauge is generally 6 months