Meatest M133C, Руководство по эксплуатации

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M133C Electric Power/Energy Calibrator
MEATEST
65 Operation manual
Performance verification may be performed after warm-up period i.e. 1 hour after switching on.
Calibrator have to be in temperature stabilize condition at minimum 8 hours before performance
verification test is started.
Basic steps of the performance verification test
Verification procedure consists of following steps:

30 V DC voltage test with linearity check

DC voltage internal ranges 10 V, 70 V, 140 V, 280 V test

30 V AC voltage test with linearity check

AC voltage internal ranges 10 V, 70 V, 140 V, 280 V, 600 V test

1 A DC current test with linearity check

DC current internal ranges 300 mA, 2 A, 5 A, 10 A, 30 A test

AC current internal ranges 300 mA, 2 A, 5 A, 10 A, 30 A test

AC/DC power 480W, 2400W (AC power with PF 0, +0.5, -0.5) test

Frequency nominal value 1 kHz test

Multimeter internal ranges 10 VDC, 20 mADC, frequency 10 kHz test

Distortion checking of AC voltage, range 30 V.
Procedure
Following part describes procedure of performance verification test. Recommended measuring
points are the same as the points in table of limits (see tables bellow).
1. Connect the calibrator to the mains and let them switched on for at least one hour in a
laboratory at 23

1
o
C.
2. Connect voltage input of the standard multimeter to the voltage output terminals of the
calibrator. Set appropriate parameters on the standard multimeter to achieve its best accuracy.
3. Perform 30 VDC linearity, DC voltage, 30 VAC linearity, AC voltage tests according to the
tables I, II, III, IV. Deviations should not exceed specified limits.
4. Connect current input of standard multimeter to the current output terminals of the calibrator.
Set appropriate parameters on the standard multimeter to meet its best accuracy.
5. Perform 1 ADC linearity, DC current, AC current tests according to the tables V, VI, VII.
Deviations should not exceed specified limits.
6. Connect standard powermeter to the appropriate output and current terminals of the calibrator.