There are many ways to use a clamp type grounding resistance tester. How to use the clamp type grounding resistance tester correctly? Measure its resistance with an instrument and compare it with the initial data. The grounding resistance tester is a commonly used instrument for inspecting and measuring grounding resistance, and is also an indispensable tool for electrical safety inspection and completion acceptance of grounding engineering. Currently, advanced grounding resistance testers can meet all grounding measurement requirements. Due to its measurement function, the grounding resistance tester also incorporates a large amount of microprocessor technology, and deviations within the specified range prove that the equipment is qualified. The content and accuracy cannot be compared with general instruments. During the operation inspection, use a grounding resistance tester to measure its resistance value and record it. Seal the sample of the standard resistor. The clamp type grounding resistance tester is used to measure the grounding resistance of any system with a circuit. In recent years, due to the rapid development of computer technology, the instrument itself can generate a power supply potential