Who has regulations regarding the calibration deadline for working measuring instruments?
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It’s the regulations for instruments that specify how often they must be calibrated~!
Every measuring instrument **has corresponding calibration procedures, which specify its calibration cycle.
It depends on the requirements of each company; this can be determined by oneself. Trade measurement-related items require mandatory inspection, while the rest are more flexible
“Principles and Methods for Determining the Calibration Period of Measuring Instruments” JJF 1139-2005
The calibration cycle for ordinary instruments is generally one year; there are also those with a half-year cycle, such as boiler pressure gauges, which are subject to **mandatory calibration. Some instruments have a two-year cycle, like atomic absorption spectrophotometers. The appropriate cycle can be determined based on individual circumstances