The Hall sensor is based on the Hall effect (a type of magnetoelectric effect), which w🍃as discovered by American physicist Hall (A. H. Hall, 1855-1938) in 1879 while studying the conductive mechanism of metals. When a current passes through a conductor perpendicular to an external magnetic field, there will be a potential difference between the two end faces of the conductor perpendicular to the magnetic field and the direction of the current, which is known as the Hall effect. This 👍potential difference is also known as a magnetic field sensor made of Hall potential.

Later, it was ꦡdiscovered that semiconductors, conductive fluid𝔉s, and other materials also have this effect, and the Hall effect of semiconductors is much stronger than that of metals. Various Hall components made from this phenomenon are widely used in industrial automation technology, detection technology, and information processing. The Hall effect is a fundamental method for studying the properties of semiconductor materials. The Hall coefficient measured through Hall effect experiments can determine important parameters such as the conductivity type, carrier concentration, and carrier mobility of semiconductor materials.

The Ha🌠lജl effect in fluids is the theoretical basis for studying "magnetohydrodynamic power generation"

1. Current sensors need to choose products of different specifications according to the rated value of the measured current. If the measured current exceeds the limit for a long time, it will damage the terminal power amplifier tube (referring to magnetic compensation type). In g🌼eneral, the duration of twice the overload current should not exceed 1 minute.

2. The voltage sensor needs to be connected in series with a current limiting resistor R1 on the primary side according to the product instructions, in order to obtaiꩵn the rated current on the primary side. In general, the duration of tꦜwo times the overvoltage should not exceed one minute.

3. The optimal accuracy of current and voltage sensors is obtained under the condition of the original r♉ated value, so when the measured current is higher than the rated value of the current sensor, the corresponding larger sensor should be selected; When the measured voltage is higher than the rated value of the voltage sensor, the current limiting resistor should be readjusted. When the measured current is less than 1/2 of the rated value, in order to achieve better accuracy, multiple turns can be used.

4. Sensors with insulation and withstand voltage of 3KV can work normally in AC systems up to 1KV and 1 for a long time. In 5KV and below DC systems, 🃏6KV sensors can work normally for a long time in 2KV and below AC systems and 2. Be careful not to use overvoltage in 5KV and below DC systems.

5. When👍 using on devices that require good dynamic characteristics, it is recommended to use a single copper aluminum busbar that matches the aperture as much as possible. Replacing large bars with small bars or having multiple coils can affect the dynamic char✅acteristics.

6. When used in high current DC systems, it is worth noting that if the working power supply is open circuit or faulty for some reason, tꦰhe iron core will generate significant residual magnetism. Residual magnetism affects accuracy. The method of demagnetization is to apply an AC current to the primary side without adding a working power source and gradually reduce its value.

7. The sensor's ability to resist external magnetic fields is: a current exceeding twice the primary current value of the sensor at a distance of 5-10cm can resist the magnetic field interference generated. When conducting three-phase high current wiring, the distance between phases should be greater than 5-10cm.

8. In order to ensure that the sensor operates in a better me꧂asurement state, a simple and typical regul💛ated power supply should be used.

9. The magnetic saturation point and circuit saturation point of the sensor ๊give it strong overload capacity, but the overload capacity is time limited. When testing the overload capacity, an overload current of more tꦡhan 2 times shall not exceed 1 minute.

10. The temperature of the primary current bus should not exceed 85 ℃𝐆, which is determined by the characteristics of ABS engineering plastic. Users have special requirements and can choose high-temperature plastic as the shell. All.