Interpret the operational details of the resistance tester
Release time:
2021-07-22 17:48
Now it is very convenient. In order to measure the specific resistance value, there is usually a special tester, which can better ensure the normal operation of the equipment. However, if the operation is not correct, the final value will be affected. Therefore, the details still need attention.
Resistance tester operation details:
1. The capacitance tester company introduced that the grounding line should be disconnected from the protected equipment to ensure the accuracy of the measurement results. It cannot be measured after rain and when the soil absorbs too much water, as well as when the climate, temperature, pressure and other sharp changes, and there should be no stray current and polarized soil near the surveyed geodetic pole.
2. The probe needle should be far away from large metal bodies such as underground water pipes, cables, railways, etc. The current pole should be far away from more than 10m and the voltage pole should be far away from more than 50m. If the above metal body is not connected to the grounding grid, the distance can be shortened by 1/2 to 1/3.
3. Pay attention to the position where the current pole is inserted into the soil. The ground rod should be at zero potential. The connecting wire should use a well-insulated wire to avoid leakage. The test site should not have electrolytic substances and rotting corpses to avoid illusion.
4. The capacitance tester company introduced that the test should be carried out when the soil resistivity is large, such as early winter or summer dry season. Check the accuracy of the instrument at any time (send it to the unit of measurement for testing and identification once a year).
