Current temperature sensor manufacturer offers

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.

the current temperature sensor input and output connection mode

from the original edge access points have

( 1) Amount of contact measurement, measuring both must access to the temperature sensor, temperature sensor is a string into the original edge in the circuit. Voltage temperature sensor, some small 5 a current temperature sensor and temperature sensor are all contact measurement.

（ 2) Non-contact measurement: to measure the amount of both without breaking the original edge circuit through the temperature sensor can be. Current temperature sensor are non-contact measurement.

in order to fit for the use of all kinds of complicated environment, the group module shielding type of temperature sensor and the strong electromagnetic interference, heads temperature sensor for temperature change range wider environment use.

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.

the difference between the voltage transformer and current temperature sensor detection current

current transformer, is the primary side large current, in proportion to fit through the instrument or use the relay, rated current 1 a to 5 a or the transformation of equipment. Its working principle and the transformer is similar.

1, a winding and high voltage circuit in series, only depends on the high pressure loop current, which has nothing to do with the secondary load.

2, secondary loop is not allowed to open, otherwise it will produce dangerous high voltage, endangers one's personal and equipment safety.

3, secondary loop must have some grounding directly, prevent after the primary and secondary windings insulation breakdown of high voltage, but only a little ground.

the current temperature sensor has the advantage of this structure is simple, accuracy and linearity of the measurement result is higher. Measurable dc, ac and all kinds of current waveform. But its measuring range, such as bandwidth is limited by certain. In this application, hall device is magnetic field detector, it detects the magnetic core air gap of the magnetic induction intensity. After current increase, core may reach saturation; With increasing frequency, magnetic core in eddy current loss, hysteresis losses, etc. It will rise. These will have an effect on the measurement accuracy. Of course, also can take some improvement measures to reduce these effects, such as choosing high saturation magnetic induction intensity of magnetic core materials; Made from multilayer magnetic core; Multiple hall element is used to test and so on.