Which multimeter is more cost-effective?
The frequency of household multimeter is low, so you can buy a pointer multimeter, which is about tens of yuan. It is also suitable for beginners to use, and it doesn't hurt if it is damaged. Pointer multimeter has the advantage of low price, but the disadvantage is that reading data is not intuitive, and it is easy to be damaged due to improper operation.
Commonly used portable multimeters can be divided into three types: mechanical pointer multimeter, digital display multimeter and clamp digital display multimeter.
Analyze the advantages and disadvantages and prices of these three kinds of watches.
Mechanical pointer multimeter
This kind of meter is less disturbed by temperature, humidity and magnetic field, and the measured values are relatively stable and intuitive, unlike digital display meters, which sometimes fluctuate up and down and jump around. Old electricians and electronic maintenance personnel generally like it. But when measuring, the gear must be adjusted correctly. When measuring the voltage of 380V, a friend of mine forgot to adjust the gear. At that time, the watch burned with a beep. Fortunately, people were fine, and they were scared enough. The price is cheap, from a dozen dollars to dozens of dollars.
Digital multimeter
Precision electronic products are often affected by magnetic fields, humidity and other environments, but if they are not used for precision electronic circuit measurement, the impact can be basically ignored. The measurement results are clear at a glance, especially suitable for household use and high-voltage engineering measurement. This kind of meter is the most widely used at present. The price is not high, basically less than 100 yuan.
Clamp digital multimeter
Commonly known as clamp meter, its function is similar to that of digital display meter, but it has an additional function, which can measure the line current of the line by clamping the meter on the live wire without poking the zero line of the fire with two watch hands, so the safety is higher. For example, friends often ask questions on Wukong. What's the reason? Take a clip-on meter and you'll know how big the current is, and then you'll know whether it's thinner or smaller. I bought one for 95 yuan around 2010. At that time, it was basically two days' salary. Now it's almost ten years. Except for changing the watch hands twice, I still use it, which is quite good. The price of ordinary brands is around 100 to 200, and the price is acceptable.
