Darui Electric recommends
Before measuring with the mining stray current tester, screw the test rod wires into the two binding posts respectively, and adjust the meter pointer to the zero scale line.
2. During measurement, ensure the hard alloy of the measuring probe makes good contact with the object under test, and the instrument should be placed horizontally to ensure accurate readings.
3. When measuring stray voltage values, the ranges are: 50mA corresponds to 0.2V, 250mA corresponds to 1V, 1A corresponds to 4V, corresponds to 20V, and 10A corresponds to 40V. (That is, the current value multiplied by 4 gives the voltage value)
4. If no AC stray current is measured at a location, DC stray current should also be tested, and vice versa.
5. When measuring DC stray current, if the meter pointer deflects in the reverse direction, simply swap the test leads.
6. When the magnitude of stray current is unknown, first set to the maximum range, then gradually decrease until the appropriate measuring range is reached.
7. When the measured current is greater than, the instrument should only be used for short-term measurement; when the measured current exceeds 10A, the instrument should only be used for instantaneous measurement to prevent large currents from burning out components and the meter.
8. When the mining stray current tester is not in use, it should be set to the "Off" position.
Note: The above information and technical parameters are compiled and released by Yangzhou Darui Electric Co., Ltd.
