Ground Resistance Tester is to test the common ground resistance measurement instruments, electrical safety checks are also grounding of the final acceptance and an indispensable tool, but often there will be a small problem, Ground Resistance Tester Common Faults and exclusion method, as follows:
Fault 1: Check the battery voltage is normal and the ground resistance measurement measurement data are not allowed, error,glue stick inaccurate.
Failure: This failure is usually due to signal filtering and tone detection circuit fault caused by efficiency, the most common cause is damage to the filter inductor T1,
Remedy: Replace T1 inductance can immediately fix it.
Fault 2: Check the battery voltage is normal, but not for ground resistance measurement.
Failure: This failure may be because usually due to switching power supplies, AC-DC conversion, and the constant current output section failure.
Remedy: Frequency Measurement using C port. No 820Hz AC output, you can check the part of the circuit step by step, from the output transformer, glue gun switch, find out the fault part of the oscillation circuit, replaced with new parts to repair.
Troubleshooting 3: the earth resistance measurement of drift time measurements, when time allowed.
Failure: The phenomenon of "KYORITSU4102A" ground resistance meter is usually trouble-free, the problem lies in the resistance meter and the pile (auxiliary electrode) and the measured grounding connection is not good cause, there are three common connection wires are disconnected or loose fitting parts, lead to poor conductivity. Such as the use of the process that the metal wire with both ends open segments, must use solder to re-weld it, to ensure the normal earth resistance tester measurements.
Fault 4: Ground Resistance Tester's table pointer does not move, or the battery voltage and ground resistance tester measurement table pointer does not move.
Failure: header may be due to burning or connected with the circuit board connection header off caused. This is due to Ground Resistance Tester in use or during transport caused by excessive vibration.
Remedy: First, open the header panel, toggle the pointer hand, if the pointer does not automatically return to zero, indicating that the header is a bad shock; or we need to weld the table header with a multimeter measure the resistance profile header, if it is open, and it shows that the header has been burned. Current and voltage profile and then use the multimeter to measure the original connector header connector, press the button to check the voltage resistance meter, if there is a voltage meter indicates that only a ground resistance tester fault damage caused by the header, the replacement could be restored after the new header ; if the header intact, then open the shell ground resistance tester, check the meter connections, if the disconnect connected to it.