Before using the insulation resistance tester, first turn off the power of the device under test, and also make sure that its conduction cannot be connected to the ground, and ensure sufficient discharge. In addition, the most important thing is to check the device. , it can only be officially used after verifying its accuracy. Today, I will give you a detailed introduction to the calibration steps of the insulation resistance tester.

1. The first is to open the cover of the insulation resistance tester. Be careful not to damage the two wires on the circuit board, because they are connected to the switch of the power supply. Once damaged, it will affect the normal operation of the equipment. use.

2. There are three correction adjusters on the bottom right of the circuit board, find them.

3. Put the insulation resistance tester in this environment for half an hour, and then start the test after the self-balance is obtained.

4. Use the connecting wire that comes with it, connect one end to the banana plug and the other end to the alligator clip, then insert the plug of a certain length into the socket of the insulation resistance tester, and connect the two ends of the resistor to the alligator clip.

5. For the three calibration regulators, the bottom one is the temperature screwdriver adjustment, the middle one is the impedance, the top one is the humidity measurement, the counterclockwise direction is to adjust the reduced value, and the clockwise direction is to adjust the increased value.

6. Turn on the power, compare the humidity, temperature and resistance value, pay attention to compare at the same time.

7. Release the power switch and start to adjust the corresponding correction regulator slowly. Then turn on the power again and see the LCD display.

8. If you need to calibrate again, you can turn on the power again and adjust the calibrator.

9. Cover the watch cover and fasten the four fixing screws.

The calibration of the insulation resistance tester is more important. The measurement can only be started after calibration. When calibrating, be sure to follow the correct operation steps. After the calibration is completed, turn on the power switch to see if it is normal. Work, if you have any questions during the calibration process, you must contact a professional.