Verification
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Who has any information on verifying pressure gauges, pressure transmitters, etc., on site?
Haha, we need high-precision pressure sources, high-precision ammeters, etc
Both the pressure gauge and transmitter must be subjected to a standard pressure, and this requires disassembly; on-site calibration is not necessary. The working environment usually isn’t suitable for such calibration, making it very inconvenient. In some places, it’s not even clear where to place the standard testing equipment； What’s called on-site calibration these days simply involves installing a three-way valve at the site; it’s even given a fancy name of “professional on-site calibration fitting,” which seems like a form of deception – it’s completely unnecessary.
The civil work has just been completed. By \"verification in the laboratory,\" I mean the specific procedures for checking pressure gauges. It’s been a long time since they were last checked, and I’ve forgotten the exact steps; moreover, the instruments haven’t arrived yet. Let’s go over it again in advance
I can help you with gas detectors, but I don’t have any experience with pressure gauges :)
Take a look at the calibration regulations: JJG 52-2013 \"General Pressure Gauges, Pressure-Vacuum Gauges, and Vacuum Gauges with Elastic Element Sensors\", JJG 882-2004 \"Calibration Regulations for Pressure Transmitters\"
Local pressure gauges are simpler – just connect a precise digital display to measure the pressure and check whether the values of the two are similar. Transmitters are more complicated; which manufacturer’s calibrator are you using?