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[Chemical Knowledge]：The difference between clamp meter and multimeter: compact and portable or powerful?

Read： 1055 Time：18months ago Source：Transform the World with Simplicity

Clamp meter and multimeter are two common measuring instruments in the field of electronic technology, they are widely used in measuring voltage, current, resistance and so on. Although both are measuring instruments, there are some differences in their design and use.

clamp meter, as the name suggests, is shaped like a clamp, which can be easily clamped in the circuit under test to measure current. Its working principle is to measure the current size through the magnetic field generated when the current is induced, and the result is displayed on the meter. The clamp meter is small and portable, which is very suitable for use in tight spaces or occasions where you need to quickly measure current. Due to its unique design, the measurement can be completed only by clamping the circuit wire, so there is no need to interrupt the circuit or directly contact the circuit, which greatly improves the safety of the measurement. In addition, the clamp meter also has high measurement accuracy, which can meet the needs of most current measurements.

and multimeter is a general measuring instrument, can measure voltage, current, resistance, capacitance, frequency and other electrical parameters. The measurement principle of the multimeter is to connect the circuit under test with the measuring port of the multimeter, and measure the various parameters of the circuit through the probe on the measuring port. It usually has a large display screen and a variety of measurement gears, which is convenient for users to select the appropriate measurement range according to the actual situation. The advantage of the multimeter is its versatility, which can measure a variety of parameters in different occasions, which is very practical.

Although clamp meters and multimeters are common measuring instruments, there are some differences in the range of use and measurement methods. The clamp meter is more suitable for measuring current, while the multimeter is more suitable for measuring voltage, resistance and other parameters. The use of the clamp meter is relatively simple, just clamp the circuit wire to complete the measurement, which is very convenient and fast. The multimeter needs to be directly connected to the circuit under test, and the user needs to select the corresponding measurement position according to the measurement occasion, and pay attention to the correctness of the wiring. Because the multimeter has a variety of functions, its measurement principle and operation are relatively complicated, and users need to have certain professional skills.

In addition, there are differences in measurement accuracy between clamp meters and multimeters. Since the clamp meter uses a contact measurement method, it can directly measure the current, so its measurement accuracy is high. The multimeter uses a non-contact measurement method, which requires the measurement port to be connected to the circuit under test, which may be interfered by the external environment, and the measurement accuracy is relatively low.

summary, clamp meters and multimeters are common measuring instruments, and there are some differences in the scope of use, measurement methods and measurement accuracy. The clamp meter is small and portable, suitable for simple and fast current measurement, while the multimeter is powerful and suitable for measuring a variety of parameters. When choosing a measuring instrument, you need to choose the right tool according to the specific application scenario and measurement needs.

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