Fluke 1630 Calibration Information Manual page 6

1630
Earth Ground Clamp
Accuracy Tests
Accuracy specifications are valid for one year after calibration when measured at an operating
temperature of 18 °C to 28 °C. Allow the UUT to stabilize at room temperature before
performing the accuracy tests.
To verify the accuracy of the UUT functions, complete the following steps:
1. Connect a 6-inch diameter loop of wire across the output terminals of the decade resistor
box.
2. Turn the UUT rotary switch from OFF to O and verify the UUT displays CAL 7, 6,
5...CAL 1 and a single beep is heard.
3. Set the decade box for the Applied Value in Table 3, steps 1-4, and clamp the UUT
around the wire loop at the output terminals.
4. Compare the displayed reading with Display Reading Limits.
5. Continue accuracy tests for the other functions listed in Table 3. If any display readings
fall outside of the Display Reading Limits in Table 3, the UUT requires calibration
adjustment or repair. See Contacting Fluke.
UUT
Step
Function
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
6
Table 3. 1630 Accuracy Tests
Source
Decade Resistance Box
O
and 6-in. diameter wire
loop
~ mA
Calibrator and 6-in.
diameter wire loop
~ A
Calibrator and 3 turns of
copper magnet wire,
6-in. diameter
Applied Value
1 Ω
0.935 to 1.065
9 Ω
8.765 to 9.235
12 Ω
11.52 to 12.48
90 Ω
88.15 to 91.85
110 Ω
105.7 to 114.3
200 Ω
193.0 to 207.0
400 Ω
375.0 to 425.0
600 Ω
530.0 to 670.0
1100 Ω
880.0 to 1320.0
0.3 mA, 60 Hz 0.244 to 0.356
0.9 mA, 60 Hz 0.832 to 0.968
1.1 mA, 60 Hz 1.05 to 1.15
9 mA, 60 Hz 8.79 to 9.21
11.0 mA, 60 Hz 10.5 to 11.5
90 mA, 60 Hz 87.9 to 92.1
110 mA, 60 Hz 105 to 115
900 mA, 60 Hz 879 to 921
0.3 A, 60 Hz 0.264 to 0.336
3 A, 60 Hz 2.910 to 3.090
4.2 A, 60 Hz 4.09 to 4.31
10 A, 60 Hz 29.37 to 30.63
Display Reading
Limits/Instruction