Fluke 8842A Instruction Manual page 21

8842A
Instruction Manual
Accuracy
NORMAL (S) READING RATE ...............±(% of Reading + Number of Counts)
RANGE
20Ω
200Ω
2 kΩ
20 kΩ
200 kΩ
2000 kΩ
20 MΩ
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
Operating Characteristics
TEMPERATURE COEFFICIENT ............Less than 0.1 x accuracy specification per °C from 0°C to 18°C
MEASUREMENT CONFIGURATION .....2-wire or 4-wire in all ranges accept 20Ω range. Only 4-wire
OPEN CIRCUIT VOLTAGE ....................Less than 6.5V on the 20Ω through the 200 kΩ ranges. Less
INPUT PROTECTION.............................To 300V rms.
1-8
24 HOURS 23±1°C
3 4
0.007 + 30
3 5
0.0040 + 3
0.0025 + 2
0.0025 + 2
0.0025 + 2
0.023 + 3
0.023 + 3
90 DAY 23±5°C 1 YEAR 23±5°C
4
0.009 + 40
5
0.007 + 4
0.005 + 3
0.005 + 3
0.006 + 3
0.025 + 3
0.040 + 4
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.
and 28°C to 50°C.
configuration is allowed in the 20Ω range.
than 13V on the 2000 kΩ and 20 MΩ ranges.
1
.
2 YEARS 23±1°C
4
0.012 + 40 0.015 + 40
5
0.010 + 4 0.012 + 4
0.008 + 3 0.010 + 3
0.008 + 3 0.010 + 3
0.010 + 3 0.012 + 3
0.027 + 3 0.030 + 3
0.042 + 4 0.050 + 4
4
5