Fluke 345 - Calibration Verification Procedure; Voltage Check

345
Calibration Manual
24
Calibration Verification Procedure
The following sections detail the input levels used to check the Clamp Meter’s
calibration. The specification is 100 % of the specified tolerance.
Notes
For regions with mains power at 50 Hz, inputs should be at 60 Hz. For
regions with mains power at 60 Hz, inputs should be at 50 Hz. This avoids
mains “beating” effect.
Ensure instrument is degaussed up to a minimum of 1000A.
Voltage Check
Mode: Volts
Input: dc & 60/50 Hz ac signal
Internal Accuracy: ± 1.0 % rdg ± 5 dgts for V > 1 V
± 0.02 V for V ≤ 1 V
Calibrator Specification
(Volts) Min Max
0.400 0.380 0.420
1.000 0.980 1.020
1.100 1.084 1.116
3.900 3.856 3.944
4.10 4.01 4.19
39.00 38.56 39.44
41.0 40.1 41.9
390.0 385.6 394.4
410 401 419
600 589 611