Clamp ammeter is classified into mutual inductance type and electromagnetic type, what is electromag

A clamp ammeter is a combination of a current transformer and an ammeter. The core of the current transformer can be opened when the wrench is pinched; The wire through which the measured current passes can pass through the open gap of the core without having to be cut, and the core closes when the wrench is released.

The conductor of the circuit under test passing through the core becomes the primary coil of the current transformer, in which the passing current induces a current in the secondary coil. Thus, the ammeter connected to the secondary coil has an indication --- measures the current of the line under test. The clamp meter can be changed to different ranges by switching the switch gear.

The accuracy of the clamp meter is average, usually grade 1. For ease of use, there are also transfer switches of different ranges for measuring different levels of current and voltage. The Hioki 3280-10F is a mutual inductance instrument.

The CM4371 or higher-end CT series uses the electromagnetic type, and the Japanese company has both types, which can be selected according to the required function.

If you have a need, you can consult with Nikki Corporation, and we aim to become a high value-added company by taking on the challenge of only one. In order to continue to grow the company, we must make the best use of each individual's self-competence and be a good corporate citizen.

Mutual inductance generally refers to the use of AC current transformers, which can only measure AC current. The analog meter head can be driven directly.

Electromagnetic, a clamp meter with a Hall element, can measure DC and AC currents, and requires a power supply.

OK. The so-called Hall effect is a physical phenomenon in which a magnetic field acts on a current-carrying metal conductor or a charge carrier in a semiconductor to produce a transverse potential difference, that is, the current is determined according to the strength of the magnetic field.

If the measured current is small, you can put the current-carrying wire into the jaws for measurement, but the reading should be divided by the number of coils before the actual current value. After the measurement, place the moderation switch in the maximum range position (or off position) so that it can be safely used next time.

The clamp ammeter measures the AC current in the form of a transformer, and the working mode is exactly the same as that of the current transformer.

To measure direct current, it is necessary to change the DC current, because the transformer cannot transmit direct current.

Now there is such a product, AC and DC clamp ammeter. The AC measurement is measured using the transformer principle, while the DC measurement is measured using the Hall principle.

Both clamp ammeters (also known as clip ammeters) and toroidal ammeters are instruments used to measure current, but there are some differences between them in terms of appearance, how to use them, and their scope of application.

Appearance: Clamp ammeter: The appearance of a clamp ammeter takes on the shape of an openable clip, similar to a pair of pliers. It has two openable clips for clamping the current wire for measurement.

Toroidal ammeter: The appearance of a toroidal ammeter is a toroidal meter with a magnetic ring inside, and when the current passes through the magnetic ring, it will cause the pointer or digital display of the meter to be deflected.

How to use: Peizhi.

Clamp ammeter: A clamp ammeter measures the current by clamping a current wire in a clamp and using the magnetic induction principle of the clip without disconnecting the circuit. It can be used for both DC and AC current measurements.

Toroidal ammeter: Toroidal ammeter usually requires a current wire to be passed through the magnetic ring in the meter, or a magnetic ring is sleeved over the current wire to allow the current to pass through the magnetic ring, causing a deflection of the meter pointer or digital display.

Measuring range and accuracy:

Clamp ammeter: Clamp ammeter typically has a wide measurement range and can cover a large current range, from a few milliamps to several kiloamps. The accuracy is usually high and a small current resolution can be achieved.

Toroidal ammeter crack lift: The measurement range of toroidal ammeter is relatively narrow, and it is generally suitable for small current measurement. Its accuracy is generally low, and there may be a large error compared to the clamp ammeter.

Application field: Clamp ammeter: Due to its convenient use method and wide measurement range, clamp ammeter is often used in industry, electric power, electronic maintenance and other fields, especially suitable for current measurement without interrupting the circuit.

Toroidal ammeter: Toroidal ammeter is often used in laboratories, teaching, scientific research and other fields, and is suitable for small current measurement and low frequency applications.

The statement that AC clamp ammeters can measure AC and DC currents is false.

Clamp ammeters can be made to measure both AC and DC currents. The usual AC clamp meter is to use a closed core.

The principle of electromagnetic induction of the induction coil.

DC current is based on the working principle of Hall elements: the so-called Hall effect refers to the magnetic field acting on current-carrying metal conductors and semiconductors.

The physical phenomenon of transverse potential difference is generated. That is, the current is determined according to the strength of the magnetic field. Electrical-magnetic-electrical, and Faraday's law of electromagnetic induction, which is based on which the measurement of the alternating point is based, are different.

Hall effect:

The Hall effect type is more sensitive, capable of measuring both DC and AC, and is more commonly used in the kilohertz range. This type is typically used in oscilloscopes and high-end computerized digital multimeters, and the scope of use of the two types of current clamps is becoming more and more consistent.

Clamp ammeter is a kind of ammeter, which is used to measure the current value in the circuit, referred to as current clamp. In electrical and electronic engineering, a current clamp is a clamp probe with two openable clamps that clamp the electrical conductor around the electrical equipment, and the probe does not need to be in contact with the conductive part of the device, that is, there is no need to disconnect the equipment wire for probe insertion to measure the properties of the current in the conductor.

A current clamp is typically used to measure a sine wave current (alternating current (AC)). With more advanced detection instruments, it can also test phase and waveform. Very high alternating currents (above 1000 A) are easy to measure, while direct current and very low alternating currents are difficult to measure accurately.

Comparison between multimeter and clamp ammeter to measure DC current.

Clamp ammeters can be made to measure both AC and DC currents.

The results have been found for you: Yes, the clamp ammeter can be made to measure both AC and DC currents. A clamp ammeter is an instrument that can measure the current of the electric socks, and it can measure both alternating current and direct current.

The principle is that when an electric current passes through the two jaws of a clamp ammeter, the current generates a magnetic field that attracts the magnets that are scrambled on the jaws, resulting in an indicator of the magnitude of the current. Clamp ammeters can measure AC and DC currents by changing the size and position of the magnets. In addition, the clamp ammeter can also measure the AC and DC currents by changing the magnetic material of the magnet.

Hope mine is helpful to you.

AC clamp ammeters can measure both AC and DC currents. They use a physical principle called the Hall effect to measure the current flowing through their inner toroidal core. This cavity-resistant ammeter can measure alternating current, which produces a changing magnetic field, while a clamp-on ammeter can measure current by detecting this changing magnetic field.

In addition, the clamp ammeter provides a DC current measurement function, as a permanent magnet in the core allows it to respond to the DC current. As a result, AC clamp ammeters are often used to measure various types of currents. It should be noted that if you want to measure high-precision DC current, you need to choose a more professional DC clamp ammeter.

The main function of the clamp ammeter is to measure the alternating current in the line.

A clamp ammeter is a combination of a current transformer and an ammeter. The core of the current transformer can be opened when the wrench is pinched; The wire through which the measured current passes can pass through the gap where the core is open without being cut, and the core closes when the wrench is released.

Clamp ammeter: An ammeter that combines a current transformer and an ammeter.

When detecting current with a clamp ammeter, be sure to clamp one of the wires (wires) to be measuredIf two wires (parallel wires) are clamped, the current cannot be detected. In addition, when using the center (core) of a clamp ammeter, the detection error is small.

When checking the power consumption of household appliances, it is more convenient to use a line separator, some line separators can amplify the detection current by 10 times, so the current below 1A can be amplified before detection. When a DC clamp ammeter is used to detect DC current (DCA), a negative number is displayed if the current flows in the opposite direction. You can use this function to check whether the car's battery is charged or discharged.

The clamp ammeter of the true RMS detection average value method detects the average value of the sine wave through AC detection and displays the value after magnification (sine wave AC) as the RMS value. Waveforms other than sine waves with different waveform rates and skewed waves are also magnified and displayed, resulting in indication errors. Therefore, when detecting waveforms and skewed waves other than sine waves, use a clamp ammeter that can directly measure the true RMS value.

Leakage detectionLeakage detection is different from the usual current detection in that two (single-phase 2-wire type) or three (single-phase 3-wire type, three-phase 3-wire type) should be clamped together. It is also possible to clamp the ground wire for detection. The insulation management method for detecting leakage current on low-voltage circuits has become the primary means of judgment.

Since it was confirmed in 1997 (1997 revision of the technical standards for electrical equipment), leakage current clamp meters have been gradually used to detect in buildings and factories where power outages are not possible.

Clamp ammeter is a meter commonly used by electricians for daily maintenance, its main function is to measure the current of the phase line, help us troubleshoot the line fault, is a good partner in our daily maintenance.