Can measuring devices such as pressure gauges not be calibrated?
Thread Content
Under the 9,000-system audit by the Work Safety Supervision Bureau, it was observed that some pressure gauges in the workshop had compliance labels attached to them. For those pressure gauges that are installed in regular locations but don’t play a significant role, do they still need to be inspected by a metrology institute? Is there any note if no identification is provided?
Pressure gauges are required to undergo mandatory inspection once every six months.
Pressure gauges are measuring devices that require regular calibration; depending on their accuracy class, this may need to be done every six months or once a year
Generally, it’s still necessary – safety is important!
The pressure gauge on the cooling water pipeline isn’t very useful; it still needs to be checked
There’s no need for that. Regarding the calibration of pressure gauges, you should determine on your own the frequency at which they need to be calibrated, and specify this in the procedural documents. Some gauges require calibration at Class A level regularly, while others need to be calibrated once a year at Class B level; there are also those that only need to be calibrated once, at Class C level. In your case, it can be classified as Class C, and a single calibration will suffice. All of this must be clearly stated in the procedural documents for use in case of inspections by higher authorities.
Thank you for your reply; I understand
Pressure gauges that are used directly for safety protection, environmental monitoring, healthcare, and trade settlement must undergo mandatory calibration, once every six months. For other pressure gauges, you can determine the inspection cycle according to actual needs, such as every 1 year, every 2 years, a one-time inspection, inspection during maintenance periods, or on-site verification.