Resistance - Fluke 8845A User Manual

8845A Accuracy
Accuracy is given as (% measurement + % of range)
Frequency
Range
(Hz)
100 mV 3 – 5 Hz
5 – 10 Hz
10 Hz – 20 kHz
20 – 50 kHz
50 – 100 kHz
[1]
100 – 300 kHz
1 V 3 – 5 Hz
5 – 10 Hz
10 Hz – 20 kHz
20 – 50 kHz
50 – 100 kHz
[1]
100 – 300 kHz
10 V 3 – 5 Hz
5 – 10 Hz
10 Hz – 20 kHz
20 – 50 kHz
50 – 100 kHz
[1]
100 – 300 kHz
100 V 3 – 5 Hz
5 – 10 Hz
10 Hz – 20 kHz
20 – 50 kHz
50 – 100 kHz
[1]
100 – 300 kHz
750 V 3 –- 5 Hz
5 – 10 Hz
10 Hz – 20 kHz
20 – 50 kHz
[2]
50 – 100 kHz
[1] [2]
100 – 300 kHz
[1] Typically 30 % reading error at 1 MHz
[2] 750 Volt range is limited to 8 X 10
Additional Low Frequency Errors
Error is stated as % of reading.
Frequency
3HZ (slow)
10 – 20 Hz 0
20 – 40 Hz 0
40 – 100 Hz 0
100 – 200 Hz 0
200 Hz – 1 kHz 0
> 1 kHz 0

Resistance

Specifications are for 4-wire resistance function, 2 x 4-wire resistance, or 2-wire resistance with zero. If zero is not used,
add 0.2 for 2-wire resistance plus lead resistance, and add 20 m
Measurement Method ........................................... Current source referenced to LO input.
24 Hour 90 Days
(23 1 C) (23 5 C)
1.0 + 0.03 1.0 + 0.04
0.35 + 0.03 0.35 + 0.04
0.04 + 0.03 0.05 + 0.04
0.1 + 0.05 0.11 + 0.05
0.55 + 0.08 0.6 + 0.08
4.0 + 0.50 4.0 + 0.50
1.0 + 0.02 1.0 + 0.03
0.35 + 0.02 0.35 + 0.03
0.04 + 0.02 0.05 + 0.03
0.1 + 0.04 0.11 + 0.05
0.55 + 0.08 0.6 + 0.08
4.0 + 0.50 4.0 + 0.50
1.0 + 0.02 1.0 + 0.03
0.35 + 0.02 0.35 + 0.03
0.04 + 0.02 0.05 + 0.03
0.1 + 0.04 0.11 + 0.05
0.55 + 0.08 0.6 + 0.08
4.0 + 0.50 4.0 + 0.50
1.0 + 0.02 1.0 + 0.03
0.35 + 0.02 0.35 + 0.03
0.04 + 0.02 0.05 + 0.03
0.1 + 0.04 0.11 + 0.05
0.55 + 0.08 0.6 + 0.08
4.0 + 0.50 4.0 + 0.50
1.0 + 0.02 1.0 + 0.03
0.35 + 0.02 0.35 + 0.03
0.04 + 0.02 0.05 + 0.03
0.1 + 0.04 0.11 + 0.05
0.55 + 0.08 0.6 + 0.08
4.0 + 0.5 4.0 + 0.5
7
volt-Hertz
AC Filter
20HZ (medium)
0.25 –
0.02 –
0.01 0.55
0 0.2
0 0.02
0 0
Introduction and Specifications
Temperature
1 Year
Coefficient/ C
(23 5 C)
Outside 18 to 28 C
1.0 + 0.04 0.10 + 0.004
0.35 + 0.04 0.035 + 0.004
0.06 + 0.04 0.005 + 0.004
0.12 + 0.05 0.011 + 0.005
0.6 + 0.08 0.06 + 0.008
4.0 + 0.50 0.2 + 0.02
1.0 + 0.03 0.1 + 0.003
0.35 + 0.03 0.035 + 0.003
0.06 + 0.03 0.005 + 0.003
0.12 + 0.05 0.011 + 0.005
0.6 + 0.08 0.06 + 0.008
4.0 + 0.50 0.2 + 0.02
1.0 + 0.03 0.1 + 0.003
0.35 + 0.03 0.035 + 0.003
0.06 + 0.03 0.005 + 0.003
0.12 + 0.05 0.011 + 0.005
0.6 + 0.08 0.06 + 0.008
4.0 + 0.50 0.2 + 0.02
1.0 + 0.03 0.1 + 0.003
0.35 + 0.03 0.035 + 0.003
0.06 + 0.03 0.005 + 0.003
0.12 + 0.05 0.011 + 0.005
0.6 + 0.08 0.06 + 0.008
4.0 + 0.50 0.2 + 0.02
1.0 + 0.03 0.1 + 0.003
0.35 + 0.03 0.035 + 0.003
0.06 + 0.03 0.005 + 0.003
0.12 + 0.05 0.011 + 0.005
0.6 + 0.08 0.06 + 0.008
4.0 + 0.5 0.2 + 0.02
200HZ (fast)
for 2 x 4-wire resistance function.
Electrical Specifications
1
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