Fluke 187 - Page 15

True RMS Multimeter
Detailed Accuracy Specifications
7
Accuracy Accuracy Dual Display AC or AC+DC
3
Function Range Resolution DC
20 Hz-
45 Hz
45 Hz -
1 kHz
1 kHz-
20 kHz
DC mV 50.000 mV 0.001 mV 0.1% + 20 6 % + 40
500.00 mV 0.01 mV 0.03 % + 2
3000.0 mV 0.1 mV 0.025 % + 5 2 % + 40
DC V 5.0000 V 0.0001 V 0.025 % + 10
2
50.000 V 0.001 V 0.03 % + 3
2
500.00 V 0.01 V 0.1 % + 2
2
Not specified
1000.0 V 0.1 V 0.1 % + 2
2
2 % + 80 0.5 % + 40
Not specified
DC µA 500.00 µA 0.01 µA 0.25 % + 20 1 % + 20 1.0 % + 20 2 % + 40
5,000 µA0.1 µA 0.25 % + 2 1 % + 10 0.75 % + 10 2 % + 40
DC mA 50.000 mA 0.001 mA 0.15 % + 10 1 % + 20 0.75 % + 20 2 % + 40
400.00 mA 0.01 mA 0.15 % + 2 1 % + 10 1 % + 10 3 % + 40
DC A 5.0000 A 0.0001 A 0.5 %+ 10 2 % + 20 2 % + 20 6 % + 40
10.000 A
1
0.001 A 0.5 %+ 2 1.5 % + 10 1.5 % + 10 5 % + 10
1. 10 A continuous up to 35 °C, less than 10 minutes 35 °C to 55 °C. 20 A overload for 30 seconds maximum.
2. 20 counts in dual display DC or AC+DC.
3. See AC conversions notes for AC mV and V
Function Range Resolution Accuracy
Resistance
1
500.00 Ω 0.01 Ω 0.05 % + 10
3
5.0000 kΩ 0.0001 kΩ 0.05 % + 2
50.000 kΩ 0.001 kΩ 0.05 % + 2
500.00 kΩ 0.01 kΩ 0.05 % + 2
5.0000 MΩ 0.0001 MΩ 0.15 % + 4
2
30.000 MΩ 0.001 MΩ 1 % + 4
2
100.0 MΩ 0.1 MΩ 3 % + 2
4
500.0 MΩ 0.1 MΩ 10 % + 2
4
Conductance 50.00 nS 0.01 nS 1 % + 10
1. For the 5,000 count mode, divide the number of least significant digits (counts) by 10.
2. For relative humidity greater than 70 %, resistance accuracy is 0.5 % over 1 MΩ and 2.5 % over 10 MΩ.
3. Using relative mode (REL ∆) to zero residual reading.
4. To ensure stated accuracy, switch to conductance mode and verify that the open circuit reading is less than
0.10 nS.