Precautions when measuring resistance with a multimeter:
1. Before using the multimeter, "mechanical zero adjustment" should be performed first, that is, when there is no electricity to be measured, make the pointer of the multimeter point to the position of zero voltage or zero current.
2. In the process of using the multimeter, do not touch the metal part of the test pen with your hands, so on the one hand, it can ensure the accuracy of the measurement, and on the other hand, it can also ensure personal safety.
3. When measuring a certain amount of electricity, you cannot change gears while measuring, especially when measuring high voltage or high current, you should pay more attention. Otherwise, the multimeter will be damaged. If you need to change gears, you should disconnect the test leads first, and then go to measure after changing gears.
4. When using the multimeter, it must be placed horizontally to avoid errors. At the same time, pay attention to avoid the influence of external magnetic fields on the multimeter.
5. After the multimeter is used, the transfer switch should be placed in the maximum block of AC voltage. If it is not used for a long time, the battery inside the multimeter should also be taken out to prevent the battery from corroding other components in the meter.
A multimeter is a multi-function, multi-range measuring instrument, which can not only measure the resistance of the object to be measured, but also measure the DC voltage.
As an important measurement tool in the industry, only by knowing the points to be paid attention to during measurement can it play its role better.
