Clamp meter (sometimes also called clamp meter, clamp meter) AC/DC clamp meter is also one of the necessary test tools in daily maintenance work. It is mainly used to test relevant parameters such as voltage, current and frequency. It is required to have Higher test resolution, test accuracy and more test functions.
Multimeters, also known as multiplex meters, multimeters, triple meters, multimeters, etc., are indispensable measuring instruments in power electronics and other departments. Generally, the main purpose is to measure voltage, current and resistance. Multimeters are divided into pointer multimeters and digital multimeters according to the display mode. It is a multi-functional and multi-range measuring instrument. Generally, the multimeter can measure DC current, DC voltage, AC current, AC voltage, resistance and audio level, etc., and some can also measure AC current, capacitance, inductance and semiconductor. Some parameters (like β) etc.
The traditional old clamp meter is not as complete as the multimeter in the measurement gear. But now the new clamp meters generally have the function of a multimeter, but the accuracy is not very high, mainly three and a half, so if the accuracy is not very high, buy a clamp meter, all problems are solved .
The clamp meter is generally used to clamp the current. The clamp meter does not need to be connected in series in the circuit when testing the current. It only needs to be clamped on a line of the circuit under test, which is more convenient, but the accuracy is not as good as that of the multimeter in series in the circuit. out high.
In fact, clamp meters are rarely used in general. If you want to use a clamp meter, it is recommended to choose a digital clamp meter, which can be used as a multimeter or a clamp meter.
And normally speaking, many schools offer courses to learn to use multimeters, and clamp meters have relatively less contact.
There are also differences in the convenience of use. Ordinary multimeters can also measure current, but the meter must be connected to the circuit, which belongs to the category of "destructive" detection, and the series connection process is also troublesome and time-consuming. It is inconvenient to make two special test pens, but only to reduce the complexity of access.
The clamp meter does not need test leads when measuring current. As long as the clamp is "bited" on the working circuit, the reading can be displayed immediately, and its convenience is self-evident. Because of its convenience, the clamp meter has become the standard for people who often measure current and power.
Of course, if there is a project involving strong electricity, it is recommended to buy a multi-purpose clamp meter with a multimeter function, which is more convenient to use.
