Working principle of DC Clamp Meter
Here is the use of the principle of AC transformer clamp meter, electromagnetic induction coil can be generated by the clamp head, and a current conductor current proportional to I, and then through the conversion, the display value, and the same principle of transformer, so not measuring DC
The above is the original Holzer clamp meter principle, when the primary side current I flows through a long wire, will produce a magnetic field around the wire, and the size of the current flows through a wire is directly proportional to the magnetic field, the magnetic field generated by the magnetic ring gathered in, were measured by Holzer element magnetic air gap and output. Finally, numerical display
Pliers can be divided into two kinds of DC and AC measurement conditions, the principle is also different:1, the use of electromagnetic current transformer produced by the clamp meter, can only measure the AC current, DC current cannot be measured2, the Holzer current sensor production clamp meter, can measure AC DC current
