How to use a grounding resistance tester DY4100
The soil resistivity measurement of grounding resistance tester measurement in the measured soil along the line into four probes, and the probes of equal spacing, the spacing distance of L, probe into the required depth of L/20cm wire from C1, P1, P2 respectively, the C2 terminal and the four probes connected. If the measured resistance value is R, while the soil resistivity calculated by the formula: =2 psi PI RL. Psi (omega cm) - soil resistivity, between the L probe and probe distance (CM) R - ground resistance meter readings (omega). The soil resistivity obtained by this rule can be approximately considered as the average soil resistivity in the area between the embedded probes.
Earth voltage measurement wiring as shown, unplug the C1 plug, E, P1 between the plug to retain the starting voltage (EV) file, the indicator light, read the meter value, that is, E, P1 AC voltage between the values. 5, after measuring, press the power "OFF" button, instrument shutdown.
The grounding resistance measurement of a, measured along the ground E (C2 P2) and P1 and the current potential probe probe C1 in line 20 meters apart from each other, so that the potential probe in the middle position, E C, according to the requirements of the probe is inserted into the earth. B, the terminal E (C2, P2), P1 and C1 are connected with the location of the probe by a special wire. C, turn on the power switch "ON", select the appropriate gear, press the key lightly, the indicator light is bright, and the value shown on the meter LCD is the measured grounding resistance value.