Are there any **regulations** regarding the selection of pressure gauge ranges?
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For example, for a gauge ranging from 0-100 kPa, should one choose a standard gauge ranging from 0-250 kPa for calibration, or one ranging from 0-700 kPa? Are there any regulations in this regard?
As I recall, it is specified in the measurement verification regulations for each type of gauge
There are no rules; choose a watch with higher measurement precision.
The upper measurement limit of the standard gauge = the upper measurement limit of the gauge under calibration * 4/3. The accuracy class of the standard gauge ≤ 1/3 of the accuracy of the gauge under calibration × (upper limit of the gauge under calibration / upper limit of the standard gauge)
The image shows the relevant provisions in the calibration regulations for pressure gauges
To calibrate a gauge at 100 kPa, a standard digital pressure gauge with a reading of 100 kPa is required. . . If the range is set too large, the accuracy level needs to be improved.
You need to refer to the metrological verification regulations, such as JJG882 and JJG875 for quantitative calibration, and follow the requirements outlined in those regulations.
Floor 7 is more appropriate; all the relevant measurement regulations are available there
Do you have any basis for this? **Standards, or experience?
This is for selecting the precision, as well as the range
I’ve looked up a lot of information, and **clearly there are no standard requirements for this content**