Introduction to the selection points of clamp ammeter
The meaning of the clamp ammeter of the cast aluminum heater and the main points of the model selection
Clamp ammeter is also called clamp meter, Taiwan is more called hook meter. The clamp ammeter is a convenient test instrument (also known as non-destructive measurement) that clamps the wire and detects the current without cutting off the circuit. Analog pointer multimeters and digital multimeters cut off the circuit to detect current, humidity sensor probes, regulators, pt100 thermal resistance sensors, all-copper solenoid valves, cast aluminum heaters, heating coils, and clamp ammeters are only clamped on the outer skin of the energized wires. The current can be detected. The operation is simple, and it can safely detect large currents without direct connection to the circuit.
Clamp meters, multimeters and insulation resistance meters all have analog finger multimeters and clamp meters. There are two types of detection methods: needle type and digital type: the detection range of the standard type: AC and DC are around 2A to 200A or 400A, and there are also detection methods Products with a large current up to 2000A; there are also leakage detection products that can detect small currents of several mA, and products that can detect the true effective value of non-sine waves other than sine waves such as transformer power supplies and switching power supplies.
Clamp ammeter, 4 key points for model selection?
1: detection object
Choose the model according to different detection objects, AC current, DC current, or leakage current;
2: Maximum detectable conductor size
There are different specifications from 21mm diameter to 53mm diameter to match the testing site;
3: Is true value detection necessary?
Clamp ammeters using the average value method cannot correctly detect non-sinusoidal circuits such as motors and transformer circuits. To detect such circuits, a clamp ammeter with a true RMS method should be used;
4: Other functions
Clamp ammeters can not only detect current, but also have a model that integrates the detection function and recording output.
