Fluke 287C - DC Voltage Specification; DC Current Specifications; Resistance Specifications

True-rms Digital Multimeters
Detailed Specifications
7
DC Voltage Specification
Function Range Resolution
Accuracy
DC
[2]
AC over DC, DC over AC, AC + DC
[2]
20 to 45 Hz
45 Hz to
1 kHz
1 to 20 kHz
20 to 35 kHz
DC mV 50 mV
[3]
0.001 mV 0.05 % + 20
[4]
2 % + 80 0.5 % + 80
1.5 % + 40 5 % + 40
500 mV 0.01 mV 0.025 % + 2
[5]
1.5 % + 40 5 % + 40
DC V
[1]
5 V 0.0001 V 0.025 % + 2 1.5 % + 40 5 % + 40
50 V 0.001 V 0.025 % + 2 1.5 % + 40 5 % + 40
500 V 0.01 V 0.03 % + 2 Not Spec’d Not Spec’d
1000 V 0.1 V 0.03 % + 2 Not Spec’d Not Spec’d

[1]
1000 V 0.1 V 1 % + 20 Not Spec’d Not Spec’d Not Spec’d Not Spec’d
[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 Resolution
Accuracy
DC
[1][3]
AC over DC, DC over AC, AC + DC
[1]
20 to 45 Hz
45 Hz to
1 kHz
1 to 20 kHz
20 to
100 kHz
[5]
DC μA
[4]
500 μA 0.01 μA
0.075 % + 20 1 % + 20 0.6 % + 20 0.6 % + 20 5 % + 40
5000 μA 0.1 μA
0.075 % + 2 1 % + 5 0.6 % + 5 0.6 % + 10 5 % + 40
DC mA
[4]
50 mA 0.001 mA 0.05 % + 10
[6]
1 % + 20 0.6 % + 20 0.6 % + 20 5 % + 40
400 mA 0.01 mA 0.15 % + 2 1 % + 5 0.6 % + 5 1.5 % + 10 5 % + 40
DC A
[2]
5 A 0.0001 A 0.3 % + 10 1.5 % + 20 0.8 % + 20 3 % + 40
[5]
Not Spec’d
10 A 0.001 A 0.3 % + 2 1.5 % + 10 0.8 % + 10 3 % + 10
[5]
Not Spec’d
[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 Range Resolution Accuracy
Resistance
50 Ω
[1][3]
0.001 Ω
0.15 % + 20
500 Ω
[1]
0.01 Ω
0.05 % + 10
5 kΩ
[1]
0.0001 kΩ
0.05 % + 2
50 kΩ
[1]
0.001 kΩ
0.05 % + 2
500 kΩ 0.01 kΩ
0.05 % + 15
5 MΩ 0.0001 MΩ
0.15 % + 4
30 MΩ 0.001 MΩ
1.5 % + 4
50 MΩ 0.01 MΩ
1.5 % + 4
50 MΩ up to 100 MΩ 0.1 MΩ
3.0 % + 2
100 MΩ up to 500 MΩ 0.1 MΩ
8 % + 2
Conductance 50 nS
[2]
0.01 nS 1 % + 10
[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.