The DC resistance tester is an instrument used to measure the contact resistance and DC resistance of switch control equipment. The test data is accurate and easy to operate. It is favored by electric power workers. The operation of the DC resistance tester requires a series of steps, including understanding the use of the rotating mouse, performing correct wiring, starting up, testing the menu, etc., and outputting the test results. In these process steps, you must pay attention to safety. I will give you a detailed introduction to how to use the DC resistance tester to be safer.

1. Before using the DC resistance tester, check whether the input and output lines are intact. After confirming, plug in the power cord. At this time, the power indicator lights up, indicating that the power line is connected. If there is an abnormal phenomenon, check the cause and deal with it.

2. Check whether the range of the voltmeter is appropriate and whether the voltage regulator is above the zero position. When selecting the range, choose according to the actual situation. When measuring the resistance of the whole machine and measuring isolation, electric poles and grounding, etc. When the resistance is different, their required ranges are different.

3. When connecting the output line to the test product, pay attention to placing the current line outside the voltage line. When the button is pressed, the indicator light turns on.

4. Adjust the voltage regulator so that the current evenly rises to the corresponding current value. Observe the change of the pointer. If there is any deviation, it must be modulated at any time to ensure the accuracy of the detection. After the detection is completed, it is necessary Make test records for future review.

Reminder: If the resistance tested by the sample is found to be abnormal, the DC resistance tester must be calibrated first, or the test must be re-tested to see if the data is very different. If it is not normal, repair it.