Measuring method of micro resistance
A resistance meter is mainly used to measure the resistance value of a resistor. A micro ohmmeter has the comparator function necessary for component test classification. The micro ohmmeter can be tested manually or systematically. It can be sampled quickly for 16 times per second, temperature compensation and automatic selection of range, and can be selected according to different uses.
What level does it require? If it's 100 cents, use a multimeter. If the measurement is small: 1 measuring internal resistance: you can use the internal resistance meter for measurement, the general tens of ten cents can be measured. 2 if you measure a few ohms and the latter is smaller, you'll have to buy a small resistance meter, which seems expensive. I also heard that there is a four point contact type measurement, the instrument has four probes to stand in the same seat to measure metal, 4 points at the same time to the pulse voltage and current for a moment, is can be measured, but it seems that there will be some errors.
The reliable connection between the grounding of power equipment, the lead out line and the grounding grid is the fundamental guarantee for the safe operation of power equipment and the personal safety of operators. This product is the power, telecommunications, petrochemical, rail, metallurgy and other industries essential testing equipment.
