Instrument calibration cycle
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Dear sea friends: Regarding the calibration cycle for instruments, we know that it can be once a year, once every two years, or once every six months, but who knows which standards these requirements are based on?
The calibration regulations or specifications for the corresponding instruments specify the calibration cycle.
It is generally carried out in accordance with the calibration procedures or specifications for instruments. However, the user entity can also determine the calibration interval reasonably based on factors such as the instrument’s stability, its importance, and the environmental conditions; this interval may be shorter or longer than the time periods specified in the calibration procedures/specifications, provided that there are corresponding documents to regulate this.
Could you give some examples of what these regulations are?
Pressure gauges per JJG52-2013, pressure transmitters per JJG882-2004, bimetallic thermometers per JJG226-2001, digital displays per JJG617-1996, and so on – these can generally be found by searching online.
For example: Depth dial indicator JJG830-2007, Calibration regulations for pressure transmitters JJG882-2004, Scales that do not provide self-indication JJG14-2016, Analog indicating scales JJG13-2016, Calibration regulations for digital indicating scales JJG539-2016, Calibration specifications for temperature transmitters JJF1183-2007, Calibration specifications for temperature monitoring devices JJF1171-2007, Calibration regulations for height calipers JJG31-2011, etc.
For example: Calibration specification for temperature transmitters JJF1183-2007, Calibration specification for temperature monitoring instruments JJF1171-2007, Verification regulations for height calipers JJG31-2011, and so on.....
The calibration cycle specified in the calibration regulations serves as a reference standard; companies can determine their own calibration cycles based on the actual conditions of the instruments in use, such as the quality of the instruments, the importance of the locations where they are used, as well as the intervals for major repairs or maintenance. These cycles should be defined through the company’s internal regulations or standards. If the technical supervision authority does not raise any objections, then these cycles can be followed. It is crucial to ensure the accuracy of the instruments in use, to prevent issues arising from overly long calibration intervals that could affect their performance and thus compromise production safety.
Please take a look at this, owner. Instruments first need to be classified according to standards, with relevant regulations for each category. Some instruments are subject to mandatory calibration, which requires a certain periodicity.