High frequency current temperature sensor price online consulting technology

Current temperature sensor using the matters needing attention

( 1) The better precision of current voltage temperature sensor is under the condition of the original edge rating, so when the measured current is higher than the current rating of temperature sensor, should choose the corresponding big temperature sensor; When the measured voltage is higher than the voltage rating, temperature sensor should readjust current limiting resistor. When the measured current is lower than the rating of 1/2 below, in order to get a better precision, can use more than the number of circle.

（ 2) Insulation withstand voltage of 3 kv temperature sensor can work for a long time in communication system and 1 1 kv and below. Dc system, 5 kv and below 6 kv temperature sensors can work for a long time in communication system, and 2 kv and below 2. Dc system 5 kv and below, be careful not to use overpressure.

what are the advantages of current temperature sensor?

current temperature sensor has a response time is short, high operating frequency, strong overload capacity, high degree of isolation, and many other advantages. In general, according to the input signal, appearance, inner hole size to select the current temperature sensor.

its numerous advantages, through the study of the accurate detection and control of large current, ensure the inverter products safe and reliable operation, the inverter in the normal output at the same time, to the abnormal condition timely treatment, improve the reliability of the converter, improve the safety quality of the frequency converter. So the advantage in hall current temperature sensor in the inverter is more and more obvious, has become an indispensable part of frequency converter in the industry.

current temperature sensor using note

1. In order to get a better dynamic characteristics and sensitivity, must pay attention to the original coil and deputy while coil coupling, coupling well, available single wire and wire completely fill the hole temperature sensor module aperture;

2. Used as the dc current flows through the temperature sensor of the original side coil, and the secondary circuit without | stabilizer or vice side open circuit, power supply is connected, the magnetic circuit is magnetized, remanent magnetization, the influence and measuring accuracy, So use to connect the power supply and measure the end M) , when this happens, first to demagnetization. The method is a circuit without power, and by the same level in the primary side coil alternating current and decreases the size of its value;

when using the current temperature sensor needs to pay attention to?

in most cases, the current temperature sensor has a strong ability to resist the external magnetic field interference, general module 5 - in the distance 10 cm between a two times the magnetic field generated by the current Ip of current interference can be ignored, but when have stronger magnetic field interference, to take appropriate measures to deal with.

usually methods are: (1) adjust the direction of the module, the external magnetic field of the influence of the small module; (2) on the module with cover a magnetic field the metal shield resistance; Choose a with hall element in two or three hall element module; (4) measuring accuracy is under the rating, when the measured current is far lower than the rating for accuracy, the original edge can use number of turns, namely: IpNp = rated ampere turn. In addition, the original edge feeder temperature should not exceed 80 ℃.