APM Calibration

APMs are calibrated as part of their production process. This calibration is traceable to national standards. However, at this point we are unable to offer calibration certification, but we do warranty that APMs will meet their specified calibration.

The APM measurement circuits are constructed using high precision components which are designed not to drift over the lifetime of the APM. This means that APMs re not designed to be calibrated and will keep their manufactured accuracy for life.

As the APM is auto ranging, the resolution will vary depending on the internal settings of the meter. To further understand resolution, please see: https://trumeter.helpscoutdocs.com/article/25-understand-accuracy-and-resolution

If it is necessary to check the accuracy of an APM this can be done using standard comparison methods, but there is no ability for modifying the measurement circuits of the APM. AC Comparison may be done at 50 or 60 Hz.