Fluke A3003 FC, Руководство по калибровке

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a3003 FC/a3004 FC
Calibration Manual
16
Figure 7. End
.
4-20 mA Clamp Calibration Adjustment
The calibration adjustment requires a calibrator with a current loop from the AUX terminal to the LO terminal. See
Table 2. To short the two terminals, use a conductor with 2 banana jacks at both ends. To ensure the clamp closes
properly, the diameter of the conductor should be

4 mm. The Meter must be factory-calibrated to calibrate the
clamp.
During the calibration adjustment the temperature must be controlled to 23 °C ±5 °C.
To make the calibration adjustment:
1.
Allow the Meter and the 4-20 mA clamp to stabilize to room temperature.
2. Connect the 4-20 mA clamp to a calibrated Meter.
3. Use 1 loop insulated copper wire to short circuit the calibrator current output AUX and LO terminals, see
Figure 8.
4. Clamp the 4-20 mA current clamp around the insulated copper wire. Current flow should be in the direction of the
arrow on the current clamp.
5. Follow the instructions to enter Maintenance mode (see Start Maintenance Mode ) and then:
a. Wait 20 seconds for the Meter to warm up.
b. Push

until JC shows on the display.
c. Follow the steps in Enter the Password until PoS shows on the display.
6. For each value in Table 7:
a.
Apply the Calibrator Output value to the Meter.
b. Wait 4 seconds for the signal to stabilize.
c. Push

to confirm the calibration step.
7. When you have completed the calibration, push

once to enter normal measurement.
Table 6. Calibration Steps for the Meter
Calibration Step
Calibrator Output
(mV)
A3303 A3304
C-01 -200
 
C-02 -20
 
C-03 20.0
 
C-04 200
 