Principle of clamp ammeter:
The clamp meter is divided into two types: single AC clamp meter and AC / DC clamp meter. The principles of the two types are different.
The clamp head of a single AC clamp meter is an electromagnetic current transformer. Through a certain number of turns of the coil, AC power can generate electromagnetic induction in the coil of the clamp head to obtain a current proportional to the AC power. The signal is converted into a digital signal.
The clamp head of the AC and DC clamp meter is a Hall active current clamp, which uses the Hall effect principle. In addition to inducing the electromagnetic field of alternating current, active components can also convert magnetic field signals into electrical signals, output a voltage signal proportional to the measured current, and measure and amplify through the Hall element to test the DC signal.
Current clamp with multimeter to test high current:
As we all know, the multimeter needs to disconnect the circuit under test when testing the current, and then connect the multimeter in series to the circuit, and the test current is small, generally within 10A, and 20A can last for several seconds. The clamp meter test current can be tested without disconnection, which is convenient and efficient.
There are two types of current clamps: single AC and AC and DC. When a single AC current clamp is used with a multimeter, you need to set the multimeter file to the mA mA position, because the output signal of a single AC clamp meter is generally a signal conversion between mA and A. When using AC / DC current clamps with a multimeter, you need to position the multimeter in the mV position. The output signal of the AC / DC clamp meter is generally a signal conversion between mV → A.
The clamp meter is divided into two types: single AC clamp meter and AC / DC clamp meter. The principles of the two types are different.
The clamp head of a single AC clamp meter is an electromagnetic current transformer. Through a certain number of turns of the coil, AC power can generate electromagnetic induction in the coil of the clamp head to obtain a current proportional to the AC power. The signal is converted into a digital signal.
The clamp head of the AC and DC clamp meter is a Hall active current clamp, which uses the Hall effect principle. In addition to inducing the electromagnetic field of alternating current, active components can also convert magnetic field signals into electrical signals, output a voltage signal proportional to the measured current, and measure and amplify through the Hall element to test the DC signal.
Current clamp with multimeter to test high current:
As we all know, the multimeter needs to disconnect the circuit under test when testing the current, and then connect the multimeter in series to the circuit, and the test current is small, generally within 10A, and 20A can last for several seconds. The clamp meter test current can be tested without disconnection, which is convenient and efficient.
There are two types of current clamps: single AC and AC and DC. When a single AC current clamp is used with a multimeter, you need to set the multimeter file to the mA mA position, because the output signal of a single AC clamp meter is generally a signal conversion between mA and A. When using AC / DC current clamps with a multimeter, you need to position the multimeter in the mV position. The output signal of the AC / DC clamp meter is generally a signal conversion between mV → A.