Fluke 8842a instruction manual Hours 23±1C

8842A

Instruction Manual

Accuracy

NORMAL (S) READING RATE ...............±(% of Reading + Number of Counts)1.

RANGE

20Ω3

200Ω3

2 kΩ

20 kΩ

200 kΩ

2000 kΩ

20 MΩ

24 HOURS 23±1°C

0.007 + 304

0.0040 + 35

0.0025 + 2

0.0025 + 2

0.0025 + 2

0.023 + 3

0.023 + 3

90 DAY 23±5°C

0.009 + 404

0.007 + 45

0.005 + 3

0.005 + 3

0.006 + 3

0.025 + 3

0.040 + 4

1 YEAR 23±5°C

0.012 + 404

0.010 + 45

0.008 + 3

0.008 + 3

0.010 + 3

0.027 + 3

0.042 + 4

2 YEARS 23±1°C

0.015 + 404

0.012 + 45

0.010 + 3

0.010 + 3

0.012 + 3

0.030 + 3

0.050 + 4

1.Within one hour of ohms zero, using offset control.

2.Relative to calibration standards.

3.Applies to 4-wire ohms only.

4.When offset control is not used the number of counts are 50, 70, 90 and 90 for 24 hours,90 day, 1 year, and 2 year respectively.

5.When offset control is not used the number of counts are 5, 7, 9 and 9 for 24 hours, 90 day, 1 year, and 2 year respectively.

MEDIUM AND FAST READING RATES	........In medium rate, add 2 counts to the number of counts for
	the 200Ω through 200 kΩ ranges, 3 counts for the 2000
	kΩ and 20 MΩ ranges, and 20 counts for the 20Ω range.
	In fast reading rate, use 3 (4½ digit mode) counts for the
	number of counts for the 200Ω range, 20 (4½ digit mode)
	counts for the 20Ω range and 2 (4½ digit mode) counts for
	all other ranges.
Operating Characteristics
TEMPERATURE COEFFICIENT	Less than 0.1 x accuracy specification per °C from 0°C to 18°C
	and 28°C to 50°C.
MEASUREMENT CONFIGURATION	2-wire or 4-wire in all ranges accept 20Ω range. Only 4-wire
	configuration is allowed in the 20Ω range.
OPEN CIRCUIT VOLTAGE	Less than 6.5V on the 20Ω through the 200 kΩ ranges. Less
	than 13V on the 2000 kΩ and 20 MΩ ranges.
INPUT PROTECTION	To 300V rms.

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