Tell me about the difference between AMT tolerance and DMM accuracy.

Compatible models: All
Question: Tell me about the difference between AMT tolerance and DMM accuracy.
Answer: AMT tolerance and DMM accuracy are specifications for measurement accuracy.

The measurement error of the analog tester is expressed as the tolerance against the maximum scale value, and the measurement error of the digital multimeter is expressed as the accuracy against the measured value. The following is a comparative example of current products.

Analog type AP33
AC voltage tolerance is within ±5% against the maximum scale value
・When AC100V is measured in the 250V range, the tolerance is ±12.5V against the measured value.

Digital type PM3
The best accuracy of AC voltage is 2.3% + 5 digits
・When AC100V is measured in the 400V range, the maximum measurement error is ±2.8V against the measured value.

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