The working principle is that the DC/AC converter in the machine converts DC into AC low-frequency constant current,Earth Resistance Tester and forms a loop through the auxiliary ground electrode C and the test object E.Earth Resistance Tester An AC voltage drop occurs on the test object and is fed into the auxiliary ground electrode P The AC amplifier is amplified, and then sent to the meter display after detection. With the help of the override switch, Earth Resistance Tester three different limits can be obtained: 0 ~ 2Ω,Earth Resistance Tester 0 ~ 20Ω, 0 ~ 200Ω

Product characteristics of digital grounding resistance tester: The structure of digital grounding resistance tester adopts high-strength aluminum alloy as the chassis,Earth Resistance Tester and the circuit uses a phase-locked loop synchronous tracking detection method to prevent power frequency and radio frequency interference,Earth Resistance Tester and is equipped with a switched capacitor filter To make the instrument have better anti-interference ability.Earth Resistance Tester The digital ground resistance tester uses DC/AC conversion technology to convert DC to AC low-frequency constant current for easy measurement. The auxiliary grounding resistance is allowed to change between 0～2KΩ(RC) and 0～40KΩ(RP),Earth Resistance Tester so as not to affect the measurement result. This instrument does not require manual adjustment of the balance, 3 (1/2) digit LCD display,Earth Resistance Tester in addition to ground resistance, Earth Resistance Tester can also measure low resistance conductor resistance, soil resistivity and AC ground voltage. If the test circuit fails to show "1" in the header,Earth Resistance Tester it means overflow, which is in accordance with conventional measurement.

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