Regarding instrument calibration
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Do the temperature sensors Pt100, vibration sensors, and electricity meters on the on-site unit need to be calibrated or verified?
All of them require verification or calibration; however, different verification intervals or one-time calibrations (replacement after damage) can be determined based on their importance, but corresponding management systems must be established.
Thermal resistance and thermocouples generally can be sent for testing or not; there is no mandatory requirement. Vibration probes are all subject to static calibration by the user themselves.
Well, this is how we manage things on site at the moment; I’m not sure if it meets the regulatory requirements.
I remember that according to the specifications for the acceptance of instrumentation work, thermal resistance thermocouples do not need to be tested.
On-site temperature sensors are generally rarely calibrated or verified, right?； However, it is best to use calibration instruments regularly to test the static performance of vibration sensors, as this is important for protecting the machinery ； And if an electricity meter is used for measurement, it must undergo mandatory calibration
For ordinary units, self-checking is sufficient; for important units, it is best to undergo calibration. It depends on how strictly the local authorities inspect; if the inspections are strict, calibration is required, while if they’re not so strict, verification is sufficient.