Fluke 187 - Detailed Accuracy Specifications

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Calibration Manual
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Detailed Accuracy Specifications
Accuracy is specified for a period of one year after calibration, at 18 °C to 28 °C (64 °F
to 82 °F), with relative humidity to 90 %. Accuracy specifications are given as:
± ( [ % of reading ] + [ number of least significant digits ] )
AC mV, AC V, AC µA, AC mA, and AC A specifications are ac coupled, true rms and
are valid from 5 % of range to
100 % of range. AC crest factor can be up to 3.0 at full-scale, 6.0 at half-scale except the
3000 mV and 1000 V ranges where it is 1.5 at full scale, 3.0 at half-scale.
Accuracy
Function Range Resolution
45 Hz-
1 kHz
20 Hz-
45 Hz
1 kHz-
10 kHz
10 kHz-
20 kHz
20 kHz-
100 kHz
AC mV
1, 2
50.000 mV 0.001 mV 0.4 % + 40 2 % + 80 5 % + 40 5.5 % + 40 15 % + 40
500.00 mV 0.01 mV 0.4 % + 40 2 % + 80 5 % + 40 5.5 % + 40 8 % + 40
3000.0 mV 0.1 mV 0.4 % + 40 2 % + 80 0.4 % + 40 1.5 % + 40 8 % + 40
AC V
1, 2
5.0000 V 0.0001 V 0.4 % + 40 2 % + 80 0.4 % + 40 1.5 % + 40 8 % + 40
50.000 V 0.001 V 0.4 % + 40 2 % + 80 0.4 % + 40 1.5 % + 40 8 % + 40
500.00 V 0.01 V 0.4 % + 40 2 % + 80 0.4 % + 40 Not
specified
Not
specified
1000.0 V 0.1 V 0.4 % + 40 2 % + 80 0.4 % + 40 Not
specified
Not
specified
dBV −52 to −6 0.01 dB 0.1 dB 0.2 dB 0.5 dB 0.5 dB 1.4 dB
−6 to +34 0.01 dB 0.1 dB 0.2 dB 0.1 dB 0.2 dB 0.8 dB
+34 to +60 0.01 dB 0.1 dB 0.2 dB 0.1 dB Not
specified
Not
specified
1. For the 5,000 count mode, divide the number of least significant digits (counts) by 10.
2. A residual reading of 8 to 180 digits with leads shorted, will not affect stated accuracy above 5 % of range.
Accuracy
Function Range Resolution
45 Hz-
1 kHz
20 Hz-
45 Hz
1 kHz-
20 kHz
20 kHz-
100 kHz
AC µA 500.00 µA 0.01 µA 0.75 % + 20 1 % + 20 0.75 % + 20 6 % + 40
5,000.0 µA0.1 µA 0.75 % + 5 1% + 5 0.75 % + 10 2 % + 40
AC mA 50.000 mA 0.001 mA 0.75 % + 20 1% + 20 0.75 % + 20 9 % + 40
400.00 mA 0.01 mA 0.75 % + 5 1% + 5 1.5 % + 10 4 % + 40
AC A 5.0000 A 0.0001 A 1.5 % + 20 1.5% + 20 6 % + 40 Not specified
10.000 A
1
0.001 A 1.5 % + 5 1.5% + 5 5 % + 10 Not specified
1. 10 A continuous up to 35 °C, less than 10 minutes 35 °C to 55 °C. 20 A overload for 30 seconds maximum.