Measurement Principles of AC/DC Clamp Ammeters
Hall sensors are generally used to test direct current. Because the communication clamp table cannot use electromagnetic induction method. The Hall sensor is placed as shown in the following figure. The generated magnetic flux is proportional to the main DC and AC currents in the clamp head. This is detected by the Hall sensor and used as the output voltage to dissipate the magnetic flux.
Hall sensor: It is a semiconductor that can generate a proportional voltage to the bias current generated by the measured object and generate an output terminal magnetic field when the bias current is applied to the input terminal.
How to operate a clamp ammeter?
Under normal circumstances, the operation of an AC clamp ammeter follows the CT principle, which is commonly used to obtain magnetic flux by passing current through a conductor. Assuming that the current passing through the conductor is the main current, we can obtain a current proportional to the main current through electromagnetic induction generated by the secondary coil of the clamp (which is connected to the circuit of the measured object). This can enable us to read the alternating current (when using a digital clamp ammeter)
Please refer to the following flowchart for details:
Select and set standard insulation values in various measurement ranges, and compare them with readings.
Obtain results by comparing the fail or pass signals displayed on the screen and paying attention to the beep sound
Beep reminder can be associated with fail or pass according to user requirements
