QGH1315603-05

Percentage error calculation for accuracy verification testing

Accuracy verification testing requires you to calculate the percentage error between the meter being tested and the reference/standard.

Calculate the percentage error for every test point using the following formula:

Percentage error = (MUT - RSS) / RSS x 100

Where:

  • MUT= parameter measured by the meter under test

  • RSS = Reference Sub Standard (Reference device)

NOTE: If accuracy verification reveals inaccuracies in your meter, they may be caused by typical sources of test errors. If there are no sources of test errors present, please contact your local Schneider Electric representative.
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