Dc Voltage Specification; Dc Current Specifications; Resistance Specifications - Fluke 287C Calibration Manual

DC Voltage Specification

Function Range
[3]
DC mV 50 mV
500 mV
DC V [1] 5 V
50 V
500 V
1000 V

1000 V
[1]
[1] Add 20 counts in dual display ac over dc, dc over ac or ac+dc.289 only.
[2] 10 A to 20 A, 30 seconds on, 10 minutes off. >10 A not specified.
[3] When using the relative mode (REL ) to compensate for offsets.
[4] 400 mA continuous; 400 mA to 550 mA for 2 minutes on, 1 minute off.
[5] Add 10 counts/100 mV AC in dual display ac over dc, dc over ac or ac + dc.

DC Current Specifications

Function Range
DC μA [4] 500 μA
5000 μA
[4]
DC mA 50 mA
400 mA
DC A [2] 5 A
10 A
[1] AC+DC ranges are specified from 2 % to 140 % of range.
[2] 20 A for 30 seconds on, 10 minutes off. >10 A not specified.
[3] Add 20 counts in dual display ac over dc, dc over ac or ac+dc.
[4] 400 mA continuous; 550 mA for 2 minutes on, 1 minute off.
[5] Verified by design and type tests.
[6] Temperature coefficient: 0.1 X (specified accuracy)/ °C (<18 °C or > 28 °C)

Resistance Specifications

Function
Resistance 50 Ω
500 Ω
5 kΩ
50 kΩ
500 kΩ
5 MΩ
30 MΩ
50 MΩ
50 MΩ up to 100 MΩ
100 MΩ up to 500 MΩ
Conductance 50 nS
[1] When using the relative mode (REL ) to compensate for offsets.
[2] Add 20 counts above 33 nS in 50 nS range.
[3] 289 only.
Resolution
[2]
DC
[4]
0.001 mV 0.05 % + 20
[5]
0.01 mV 0.025 % + 2
0.0001 V 0.025 % + 2
0.001 V 0.025 % + 2
0.01 V 0.03 % + 2
0.1 V 0.03 % + 2
0.1 V 1 % + 20
Resolution
[1][3]
DC
0.01 μA 0.075 % + 20
0.1 μA 0.075 % + 2
[6]
0.001 mA 0.05 % + 10
0.01 mA 0.15 % + 2
0.0001 A 0.3 % + 10
0.001 A 0.3 % + 2
Range
[1][3]
[1]
[1]
[1]
[2]
Accuracy
AC over DC, DC over AC, AC + DC
45 Hz to
20 to 45 Hz
1 kHz
2 % + 80 0.5 % + 80
Not Spec'd Not Spec'd
Accuracy
AC over DC, DC over AC, AC + DC
45 Hz to
20 to 45 Hz
1 kHz
1 % + 20 0.6 % + 20
1 % + 5 0.6 % + 5
1 % + 20 0.6 % + 20
1 % + 5 0.6 % + 5
1.5 % + 20 0.8 % + 20
1.5 % + 10 0.8 % + 10
Resolution
0.001 Ω
0.01 Ω
0.0001 kΩ
0.001 kΩ
0.01 kΩ
0.0001 MΩ
0.001 MΩ
0.01 MΩ
0.1 MΩ
0.1 MΩ
0.01 nS
True-rms Digital Multimeters
Detailed Specifications
[2]
20 to 35 kHz
1 to 20 kHz
1.5 % + 40 5 % + 40
1.5 % + 40 5 % + 40
1.5 % + 40 5 % + 40
1.5 % + 40 5 % + 40
Not Spec'd Not Spec'd
Not Spec'd Not Spec'd
Not Spec'd Not Spec'd
[1]
20 to
1 to 20 kHz
[5]
100 kHz
0.6 % + 20 5 % + 40
0.6 % + 10 5 % + 40
0.6 % + 20 5 % + 40
1.5 % + 10 5 % + 40
3 % + 40 [5] Not Spec'd
3 % + 10 [5] Not Spec'd
Accuracy
0.15 % + 20
0.05 % + 10
0.05 % + 2
0.05 % + 2
0.05 % + 15
0.15 % + 4
1.5 % + 4
1.5 % + 4
3.0 % + 2
8 % + 2
1 % + 10
7