Alternating current temperature sensor manufacturers trustworthy 'the long-term effective information'

The characteristics of the current temperature sensor

both open loop and closed loop hole temperature sensor principle, basic performance difference is not big, basic advantage: fast response time, low temperature drift, high precision, small volume, wide frequency band, strong anti-jamming capability, overload ability.

how selection - — Current temperature sensor

A, choose current temperature sensors need to pay attention to the hole size can ensure wire can be through the temperature sensor;

B, choose current temperature sensor when the need to pay attention to the application environment for high temperature, low temperature, high humidity, earthquake and other special environment;

C, choice when need to pay attention to the space structure whether meet the current temperature sensor.

the classification of the current temperature sensor

current temperature sensor on the basis of measuring principle is different, the main can be divided into: the shunt, electromagnetic current transformer, electronic current transformer, etc.

including hall current temperature sensor, Luo Kefu electronic current transformer, current temperature sensor and is dedicated to frequency conversion power measurement AnyWay frequency conversion power temperature sensor ( Can be used for the voltage, current and power measurement) And so on.

current temperature sensor is also called magnetic temperature sensors, can be in household appliances, smart grid, electric vehicles, wind power, etc. , are used in our life a lot of magnetic temperature sensors, such as computer hard drives, compass, household appliances and so on.

how to improve the measurement precision of current temperature sensor?

in addition to the installation of wiring, and pay attention to the temperature sensor calibration calibration, working environment, through the following methods can improve the accuracy of measurement:

1, the original edge wire should be placed in the center of the temperature sensor inner hole, as far as possible, don't put the partial;

2, the original wire completely with temperature sensor inner hole as far as possible, don't leave gaps;

3, need to measure up to the current temperature sensor standard rating IPN, don't vary too big. Such as conditions, only one hand rating high temperature sensor, and to measure the current value is lower than the rating of a lot of, in order to improve the accuracy of measurement, can put the original edge wire around a few laps, more close to the rating. For example when using rating 100 a temperature sensor to measure the current of 10 a, in order to improve the precision of the original edge wire can be in the center of the temperature sensor of inner hole around nine laps, Generally, NP = 1; Inside the hole around a circle, NP = 2; ……； Around nine laps, NP = 10, NP x 10 a = 100 a equals the rating temperature sensor, which can improve the precision of) ；

4, when to measure the current value of IPN / 5, at 25 ℃ still can have higher precision.

current temperature sensor output

current temperature sensor using the output type depends on the application and operating environment.

- analog voltage signal The temperature sensor output analog voltage signals. - analog current level The temperature sensor output analog current signal. It can be used for signal transmission standard 4 - 20mA。 - switch and the voice signal Temperature sensor can be connected to the switch or voice alarm, the alarm by noise or process changes indicate current levels. - modulation frequency output Current temperature sensor can output the following list of any frequency output. Sine wave pulse train amplitude modulation ( AM） FM ( FM） Pulse width modulation ( 脉宽调制)