Tips for buying a multimeter
1. The display digits and accuracy of the multimeter: The display digits and accuracy are the most basic and most important indicators of the multimeter. Generally speaking, the higher the number of digits displayed by the multimeter, the higher the precision, and vice versa.
2. The measurement method and AC frequency response of the multimeter: The measurement method of the multimeter is mainly for the measurement of the AC signal. With the change of the frequency of the AC signal, various frequency responses appear, which affects the measurement of the multimeter. There are generally two methods for measuring AC signals with a multimeter: average value and true RMS measurement.
3. Function and measurement range: Different multimeters, their manufacturers will design different function measurement ranges. Ordinary multimeters can test AC and DC voltage, current, resistance, on-off, etc., but some multimeters do not set the current function in order to reduce costs.
4. Measurement stability and protection: A good multimeter has good self-protection. For example, when some multimeters are inserted into the wrong test leads, they will automatically generate a buzzer alarm... When purchasing a multimeter, don’t blindly covet cheapness, but be practical and easy to use. .
