What is an electrostatic shoe tester
The internal DC/AC converter converts DC to AC low-frequency constant current, and forms a loop through the auxiliary ground electrode C and the test object E. An AC voltage drop occurs on the test object and is sent to the AC amplifier through the auxiliary ground electrode P for amplification Then, after the detection, it is sent to the meter head to show that with the help of the magnification switch, three different limits can be obtained: 0-2Ω, 0-20Ω, 0-200Ω, so what are the characteristics of the electrostatic shoe tester?
1. If the test circuit fails to display "1" in the header, it indicates overflow, which is in accordance with conventional measurement habits;
2. Adopt DC/AC conversion technology to change DC to AC low-frequency constant current for easy measurement;
3. Allow the auxiliary grounding resistance to change between 0～2KΩ(RC) and 0～40KΩ(RP), so as not to affect the measurement result;
4. In order to prevent power frequency and radio frequency interference on the circuit, the phase-locked loop synchronous tracking detection method is adopted and the switch capacitor filter is used to make the instrument have better anti-interference ability;
5. The instrument does not need to manually adjust the balance, 3 (1/2) LCD display, in addition to ground resistance, low resistance conductor resistance, soil resistivity and AC ground voltage can also be measured.