Fluke 8846A - AC Current; Accuracy (8845 A); Additional Current Errors; Input Characteristics

8845A/8846A
Calibration Manual
Accuracy (8845A)
Accuracy is given as ± (% measurement + % of range)
Range
24 Hour
(23 ±1 °C)
90 Days
(23 ±5 °C)
1 Year
(23 ±5 °C)
Temperature
Coefficient/ °C
Outside 18 to 28 °C
100 µA 0.01 + 0.02 0.04 + 0.025 0.05 + 0.025 0.002 + 0.003
1 mA 0.007 + 0.005 0.030 + 0.005 0.05 + 0.005 0.002 + 0.0005
10 mA
0.007 + 0.02 0.03 + 0.02 0.05 + 0.02 0.002 + 0.002
100 mA 0.01 + 0.004 0.03 + 0.005 0.05 + 0.005 0.002 + 0.0005
1 A
[2]
0.03 + 0.04 0.08 + 0.02 0.05 + 0.02 0.005 + 0.001
3 A
[1][2]
0.05 + 0.08 0.12 + 0.02 0.1 + 0.02 0.005 + 0.002
10 A
[2]
0.1 + 0.008 0.12 + 0.008 0.15 + 0.02 0.005 + 0.0008
[1] Part of 10 A range
[2] Available at front panel connectors only
Additional Current Errors
Digits NPLC Additional Noise Error
6½ 100 0 % of range
6½ 10 0 % of range
5½ 1 0.001 % of range
5½ 0.2
0.001 % of range ±4 μA
4½ 0.02
0.01 % of range ±4 μA
AC Current
The following ac current specifications are for sinusoidal signals with amplitudes greater than 5 % of range. For inputs
from 1 % to 5 % of range, add an additional error of 0.1 % of range.
Input Protection ....................................................Tool accessible 11 A/1000 V and 440 mA/1000 V fuses.
Measurement Method........................................... ac-coupled true-rms, dc-coupled to the fuse and shunt (no blocking
capacitor)
AC Filter Bandwidth
Slow.................................................................... 3 Hz to 10 kHz
Medium............................................................... 20 Hz to 10 kHz
Fast..................................................................... 200 Hz to 10 kHz
Maximum Crest Factor ......................................... 5:1 at full scale
Additional Crest Factor Errors (<100 Hz) ...........Crest factor 1-2, 0.05 % of full scale
Crest factor 2-3, 0.2 % of full scale
Crest factor 3-4, 0.4 % of full scale
Crest factor 4-5, 0.5 % of full scale
Input Characteristics
Resolution
Range Resolution
4½ Digits 5½ Digits 6½ Digits
Shunt Resistance
(Ohms)
Burden Voltage
100 μA
[1]
100.0000 μA
10 nA 1 nA 100 pA
100 Ω
<0.015 V
1 mA
[1]
1.000000 mA 100 nA 10 nA 1 nA
100 Ω
<0.15 V
10 mA 10.00000 mA
1 μA
100 nA 10 nA
1 Ω
<0.025 V
100 mA 100.0000 mA 10 µA
1 μA
100 nA
1 Ω
<0.25 V
1 A 1.000000 A 100 µA 10 µA
1 μA
0.01 Ω
<0.05 V
3 A[2] 3.00000 A 1 mA 100 µA
10 μA
0.01 Ω
<0.05 V
10 A 10.00000 A 1 mA 100 µA 10 µA
0.01 Ω
<0.5 V
[1] 8846A Only
[2] Part of 10 A range
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