Fluke 771 User Manual

Milliamp Process Clamp Meter
Calibration Adjustment
13
Temperature Adjustment Procedure
1. Press C for >1 second until t23 appears on the percentage display.
2. Wait at least 60 seconds for the internal temperature to balance.
3. Press H to adjust the temperature.
Low Range Adjustment Procedure
1. Clamp the Meter’s current clamp around an insulated 18 gauge, copper wire, with
6-inch diameter. Current flow should be in the direction of the arrow on the current
clamp.
2. Press C < 1 second until CAL 20 appears on percentage display.
3. Output 0 µA dc from the calibrator.
4. Wait at least 15 seconds for the Meter’s internal circuits to stabilize.
5. Press A on the Meter to zero the reading.
6. Output 20 mA dc from the calibrator.
7. Wait at least 15 seconds for the Meter’s internal circuits to stabilize.
8. Press L on the Meter to adjust the positive gain.
9. Output -20 mA dc from the calibrator.
10. Wait at least 15 seconds for the Meter’s internal circuits to stabilize.
11. Press H on the Meter to adjust the negative gain.
High Range Adjustment Procedure
1. Clamp the Meter’s current clamp around an insulated 18 gauge, copper wire, with
6-inch diameter. Current flow should be in the direction of the arrow on the current
clamp.
2. Press C < 1 second until CAL 100 appears on percentage display.
3. Output 0 µA dc from the calibrator.
4. Wait at least 15 seconds for the Meter’s internal circuits to stabilize.
5. Press A on the Meter to zero the reading.
6. Output 100 mA dc from the calibrator.
7. Wait at least 15 seconds for the Meter’s internal circuits to stabilize.
8. Press L on the Meter to adjust the positive gain.
9. Output -100
mA dc from the calibrator.
10. Wait at least 15 seconds for the Meter’s internal circuits to stabilize.
11. Press H on the Meter to adjust the negative gain.
Note
The following procedure is not required unless the Meter’s current clamp
has been replaced.
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Fluke 771 Specifications

General

Operating altitude	0 - 2000 m
Storage temperature (T-T)	-25 - 60 °C
Operating temperature (T-T)	-10 - 50 °C
Operating relative humidity (H-H)	0 - 90 %
Product type	Digital multimeter
Product color	Grey, Red, Yellow
DC current range	0.021 - 0.1 A
Resolution (DC current)	0.21 µA
Basic accuracy (DC current)	1% + 5 counts
Battery type	AA
Power source	Battery
Battery voltage	1.5 V
Battery technology	Alkaline
Number of batteries supported	2

Weight and Dimensions

Depth	38 mm
Width	59 mm
Height	212 mm
Weight	260 g