Do newly purchased pressure gauges and thermometers need to be taken to the relevant authorities for calibration?
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Dear professionals, do newly purchased pressure gauges and thermometers need to be taken to relevant authorities for specialized calibration?
It shouldn’t be necessary; the manufacturers should have already measured it
It needs to be sent to a qualified metrology verification department for verification.
In principle, not only pressure is required, but also flow rate.
When delivered by the manufacturer, there should be certificates and relevant documents proving compliance; if a pressure gauge is installed on a pressure vessel, it needs to be inspected annually
It should be sent for inspection, and an inspection record label should be attached. Our previous company had a calibration team; before each installation, we would send the equipment to them for verification, and they would attach a certification sticker.
This is needed. Manufacturers usually have certificates of conformity; if you’re confident, you don’t need to conduct a check either
According to **regulations, it is necessary to entrust the metrology verification and testing department of the local technical supervision bureau to carry out metrological verification, calibration, and testing.
Pressure gauges need to be inspected by the quality and technical supervision authorities and sealed with a lead seal before they can be used; thermometers, on the other hand, do not require such inspection
Large enterprises generally have their own calibration laboratories, equipped with the capabilities to test standard temperature and pressure instruments.
I have third-party evaluations here as well