Verifying accuracy test
The following tests are guidelines for accuracy testing
your meter; your meter shop may have specific testing methods.
 DANGER |
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HAZARD OF ELECTRIC SHOCK, EXPLOSION,
OR ARC FLASH
Failure to follow these instructions will result in death or serious injury.
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- Turn off all power supplying this device and the equipment in which it is installed before working on the device or equipment.
- Use a properly rated voltage sensing device to confirm that all power is off.
- Connect the test voltage and current source to the reference
device. Ensure all voltage inputs to the meter under test are connected
in parallel and all current inputs are connected in series.
A Reference device B Test voltage and current source C Meter under test - Before performing the verification test, let the test equipment power up the meter and apply voltage for at least 30 seconds. This helps stabilize the internal circuitry of the meter.
- Configure the meter’s parameters for verifying accuracy testing.
- Perform accuracy verification on the test points. Run each test point for at least 30 seconds to allow the test bench equipment to read an adequate number of pulses. Allow 10 seconds of dwell time between test points.
Related links
See Meter settings for verifying accuracy testing for the meter parameters and their settings that must be configured for verifying accuracy testing.
See Calculating number of pulses for instructions on how to calculate the number of pulses required for accuracy verification.
See Percentage error calculation for instructions on how to calculate the percentage error for accuracy verification testing.