Which multimeter for electricians is more cost-effective?
Multimeters for home use are less frequently used. Just buy an analog multimeter, which costs about a few dozen yuan. It is also suitable for beginners, and you won’t feel bad if it gets damaged. The advantage of the analog multimeter is that it is cheap, but the disadvantage is that it is not intuitive to read data and can be easily damaged if it is not operated properly.
Commonly used portable multimeters can be divided into three types: mechanical pointer multimeters, digital display multimeters, and clamp-on digital multimeters.
Analyze the advantages, disadvantages and prices of these three watches.
Mechanical pointer multimeter
This type of meter is relatively less affected by temperature, humidity, and magnetic fields, and its measurement values are relatively stable and intuitive, unlike digital display meters where the values sometimes fluctuate and jump around. Old electricians and electronic maintenance personnel generally like it. However, the gear must be adjusted correctly when measuring. When a friend of mine was measuring the 380V voltage, he forgot to adjust the gear. At that time, there was a "bang" sound and the meter burned down. Fortunately, he was fine, but he was also very frightened. The price is cheap, ranging from a dozen to dozens of yuan.
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 measurements, the effects are basically negligible or negligible. The measurement results are clear at a glance, and are especially suitable for home use and strong current engineering measurements. This kind of meter is the most widely used one now. The price is not high, basically less than 100 yuan.
Clamp type digital display multimeter
Commonly known as a clamp meter, its function is similar to that of a digital display meter, but it has an additional function. You can measure the line current of the line by placing the clamp on the live wire without having to poke the neutral wire with two needles. It is safer. A little higher. For example, friends on Wukong often ask questions about the reason why the circuit breaker in his home keeps tripping. If you check it with a clamp meter, you will know how high the current is. Then you will know whether it is because the wire is thin or the circuit breaker is too small. I bought one for 95 yuan around 2010. At that time, it was basically two days’ salary. It’s been almost ten years now. Apart from changing the hands twice, I’m still using it. It’s pretty good. The price of ordinary brands is only around 100 to 200, and the price is acceptable.
