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How to 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, and pay attention to whether the spatial structure of the need when choosing current temperature sensor;

today and share how selection - Current temperature sensor, hope will be helpful to you! If you want to know more products information you can call the company telephone consultation! Serve you wholeheartedly!

type selection reference current temperature sensor element

1, what is the output, current or voltage, such as the output voltage is 4 v.

2, and accurately determine the temperature sensor, some need high accuracy, so emphasize accuracy when the choice, choose high precision current temperature sensor.

3, the specifications of the auxiliary power - Alternating current temperature sensor in order to accurately detect the change of input current current temperature sensor, and also to the dc signal output to the input current into a linear change, usually requires an auxiliary power supply for the current temperature sensor working power supply, such as power supply voltage of power supply voltage, + 15 v.

current temperature sensor

current temperature sensor specific working principle is: when the main circuit has a large current Ip flow, can produce strong magnetic field around the conductor. The magnetic field by the annular core collection and more used in the current temperature sensor device so that it has signal output. The signal amplifier and input to A power amplifier by amplifier. At this point, the corresponding change of the voltage drop of power tube Is to obtain compensation current. A magnetic field, because Is too much current flows through the winding the Hs.

the Hs in contrast to the magnetic field produced by the main current Ip Hp, thus to compensate the original magnetic field, reduce gradually from hall device output signal, multiplied by the Is and turn tens of magnetic field and magnetic field generated by the Ip. When it Is equal, Is no longer increases. At this point, the current temperature sensor to achieve zero flux detection.

how is the temperature sensor current selection

A, choose current temperature sensor needs to pay attention to the hole size can ensure wire can be through the temperature sensor.

B, select the scene of the current temperature sensor needs to pay attention to the application environment if there is a high temperature, low temperature, high humidity, earthquake and other special environment.

C, choose current temperature sensor needs to pay attention to the space structure is satisfied.

note when wiring terminals of the conductive parts, as far as possible to prevent ESD, needs a professional construction experience of the engineers to to the terminal operation, power supply, input and output of each connecting wire must be properly connected, dislocation or the reverse, the current temperature sensor damage to the product, otherwise may cause the product installation using the environment should be no conductive dust and corrosive, violent vibration or high temperature may also lead to product damage, must pay attention to use the occasion.

in all kinds of engineering construction, can use welding machine, compared to the previous welding, brazing machine now advanced a lot, and the hall current temperature sensor is an important part of a brazing machine, boot without reaction is the main power supply circuit and auxiliary power failure ( This kind of machine especially the common faults in the power supply voltage instability) Open to check the power cord is normal, rectifier output 310 v normal, auxiliary power supply 24 v output, accessory power supply of the machine and the main current temperature sensor control circuit on a piece of board, auxiliary power supply is to use it in 3843 and a combination of MOS type switching power supply, the secondary output DC24V and DC - 18 v motherboards, the main power relay and fan is used.

open check this machine is the product of single inverter, a total of 20 MOS tube ( 4) The inverter to provide 270 a output current, visual damage of two groups of MOS tube, power plate capacitor, estimates is the use of diesel generator voltage instability caused by temperature sensor that should replace filter capacitance, disconnect the driver output, check the rectifier bridge, two output after normal electricity ( This time not on the main electric current temperature sensor) Measure the motherboard power supply, the table, the drive tube voltage, output waveform is normal.

manual welding normal main control circuit, inverter circuit, two rectifier circuit, main power supply circuit is normal, in point of failure, function conversion circuit, arc welding control circuit and high frequency circuit, electricity boot beat function switch to the point of welding torch switch electromagnetic valve movement is normal, measure the DC output v normal, 59 of function transformation and arc welding control circuit is normal, the fault in high frequency circuit, the model of this machine high frequency circuit, main power supply circuit arc welding control circuit on a PCB board ( Commonly known as the lower) 。