For on-site pressure gauges, how can one tell from their appearance whether they have been regularly calibrated or not?
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For on-site pressure gauges, how can one tell from their appearance whether they have been regularly calibrated or not?
It is difficult to determine directly from its appearance whether a field pressure gauge has undergone regular calibration. However, if the pressure gauge is equipped with a calibration label or marking, it will contain information such as the calibration date and the calibration institution. If the calibration label or mark is damaged or missing, it is necessary to consult the personnel using that pressure gauge or check the relevant records to determine whether regular calibrations are carried out frequently. Additionally, if the pressure gauge has been in use for a long time and issues such as reduced accuracy have arisen, it is also necessary to consider sending it to a qualified calibration facility for inspection. .
The managing unit is required to affix labels and provide certification of inspection. Apart from the label, the appearance cannot be used to determine the inspection status. If no label is affixed, it is equivalent to being unverified.