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Instrument accuracy grade
- May 25, 2018 -

The absolute maximum relative error of the meter is used as the accuracy level

The accuracy of a standard instrument is: 0.005, 0.02, 0.05.

The accuracy of secondary standard instruments is: 0.1, 0.2, 0.35, 0.5.

The accuracy of general industrial instruments is: 0.1, 0.2, 0.5, 1.0, 1.5, 2.5, 5.0

Relative  percent error = (measured value of measured parameter - standard value  of measured parameter) ÷ (upper limit of scale - lower limit of scale) ×  100%

The numerator of the reference error is used as a rating mark, followed by the identification %FS.

classification:

    China's industrial instrumentation accuracy class: 0.005, 0.02, 0.05, 0.1, 0.2, 0.35, 0.4, 0.5, 1.0, 1.5, 2.5, 4.0 and so on. The smaller the number of stages, the higher the accuracy (accuracy).

    Accuracy  grades of detection instruments and display instruments for industrial  process measurement and control are: 0.01, 0.02, (0.03), 0.05, 0.1, 0.2,  (0.25), (0.3), (0.4), 0.5, 1.0, 1.5, (2.0 ), 2.5, 4.0, 5.0; 16 in total, of which 5 in parentheses are not recommended.

    According  to the standard GBT 13283-2008 Industrial process measurement and  control instrumentation and display instrumentation accuracy class.