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Accuracy

See the Specifications section for operating conditions and temperature coefficient.

Accuracy is specified as follows: ± (a percentage of the reading + a fixed amount)

at 23 °C ± 5 °C (73.4 °F ± 9 °F), 0% to 75% relative humidity.

True RMS readings: DM-810 and DM-820 AC accuracies are specified from 5% to 100% of

the range unless otherwise specified. Frequency must be within the specified bandwidth for

non-sinusoidal waveforms. Crest factors are as follows:

• Crest factor < 3:1 at full scale

• Crest factor < 6:1 at half scale

DC Current

Range Accuracy

499.9 µA ± (0.2% + 0.4 µA)

4999 µA ± (0.2% + 4 µA)

49.99 mA ± (0.2% + 0.04 mA)

Range Accuracy

499.9 mA ± (0.2% + 0.4 mA)

4.999 A ± (0.2% + 0.004 A)

10.00 A* ± (0.2% + 0.04 A)

*10 A continuous; 20 A maximum (Duty Cycle: 30 seconds on, 5 minutes off)

AC Current

Range

Accuracy at Accuracy at

50 Hz to 60 Hz 40 Hz to 1 kHz

499.9 µA ± (0.6% + 0.3 µA) ± (0.8% + 0.4 µA)

4999 µA ± (0.6% + 3 µA) ± (0.8% + 4 µA)

49.99 mA ± (0.6% + 0.03 mA) ± (0.8% + 0.04 mA)

499.9 mA ± (1.0% + 0.3 mA) ± (1.0% + 0.4 mA)

4.999 A ± (0.6% + 0.003 A) ± (0.8% + 0.004 A)

10.00 A* ± (0.6% + 0.03 A) ± (0.8% + 0.04 A)

*10 A continuous; 20 A maximum (Duty Cycle: 30 seconds on, 5 minutes off)

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Valor Fires 820 Bedienerhandbuch Seite 16