Dc Current - Fluke 8845A User Manual

8845A Accuracy
Accuracy is given as (% measurement + % of range)
24 Hour
Range
(23 1 C)
100 0.003 + 0.003
1 k 0.002 + 0.0005
10 k 0.002 + 0.0005
100 k 0.002 + 0.0005
1 M 0.002 + 0.001
10 M 0.015 + 0.001
100 M 0.3 + 0.01
Additional Ohms Errors
Digits
6½
6½
5½
5½
4½

DC Current

Input Protection....................................................... Tool-accessible 11 A/1000 V and 440 mA/1000 V fuses, limits of
Common Mode Rejection ............................................140 dB at 50 or 60 Hz 0.1 % (1 k
Normal Mode Rejection .......................................... 60 dB for NPLC of 1 or greater with analog filter off and power line
Analog Filter............................................................ When using the analog filter, specifications are relative to within one
Input Characteristics
Range Resolution
100 A 100.0000 A
1 mA 1.000000 mA
10 mA 10.00000 mA
100 mA 100.0000 mA
[3]
400 mA 400.000 mA
[2]
1 A 1.000000 A
[1]
3.00000A
3 A
10 A 10.00000 A
[1] Part of 10 A range.
[2] Available on the front panel terminal only.
[3] 400 mA available in software version 2.0 or greater only. 400 mA continuously; 550 mA for 2 minutes on, 1 minute off.
90 Days
(23 5 C) (23 5 C)
0.008 + 0.004 0.01 + 0.004
0.008 + 0.001 0.01 + 0.001
0.008 + 0.001 0.01 + 0.001
0.008 + 0.001 0.01 + 0.001
0.008 + 0.001 0.01 + 0.001
0.02 + 0.001 0.04 + 0.001
0.8 + 0.01 0.8 + 0.01
NPLC Additional NPLC Noise Error
100
10
1
0.2
0.003 % of range 7 m
0.02
0.017 % of range 15 m
400 mA continuous 550 mA for 2 minutes on, 1 minute off.
frequency 0.1 %
100 dB for NPLC of 1 or greater with analog filter on and power line
frequency 0.1 %
hour of using the ZERO function for that range and NPLC setting.
Resolution
4½ Digits 5½ Digits
10 nA 1 nA
100 nA 10 nA
100 nA
1 A
10 A 1 A
100 A 10 A
100 A 10 A
1 mA
100 A
1 mA
100 A
Introduction and Specifications
Temperature
1 Year
Coefficient/ C
Outside 18 to 28 C
0.0006 + 0.0005
0.0006 + 0.0001
0.0006 + 0.0001
0.0006 + 0.0001
0.0010 + 0.0002
0.0030 + 0.0004
0.1500 + 0.0002
0 % of range
0 % of range
0.001 % of range
unbalance)
Shunt Resistance
(Ohms)
6½ Digits
100 pA
100
1 nA
100
10 nA
1
100 nA
1
1 A 1
1 A 0.01
10 A 0.01
10 A 0.01
Electrical Specifications
Burden Voltage
<0.015 V
<0.15 V
<0.025 V
<0.25 V
<0.50 V
<0.05 V
<0.15 V
<0.5 V
1
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