Production of magneto electric speed sensors

SZCB-01 turbine speed sensor speed probe

I. Overview

SZCB-01Magnetic electric speed sensorAdopting the principle of electromagnetic induction to achieve speed measurement. It has a large output signal, good anti-interference performance, does not require an external power supply, and can be used in harsh environments such as smoke, oil and gas, and water and gas.

Magnetic electric speed sensor is a passive sensor designed for speed measuring gears. The magnetic gap change caused by the rotation of the speed measuring gear generates an induced electromotive force in the probe coil, and its amplitude is related to the speed. The higher the speed, the higher the output voltage, and the output frequency is proportional to the speed. As the speed further increases, the magnetic circuit loss increases and the output potential tends to saturate. When the speed is too high, the magnetic circuit loss intensifies and the potential sharply decreases.

2、 Technical parameters

DC resistance:150Oh!200Ω25℃）

Gear form: modulus2～4(involute gear)

Operating temperature-10～+120℃

Anti vibration:20g

Thread specificationM16*1(Or customer request)

Measurement range:10～15000r/min（30Teeth)

Output signal amplitude:30r/min＞200mV(Test conditions: Transmission gear, with a tooth count of)60The material is electrical steel with a modulus of2The distance between the sensor end face and the tooth top1mm）. The amplitude of the signal is proportional to the rotational speed and inversely proportional to the gap between the end face and the tooth tip.

Output voltage waveform: involute gear - approximate sine wave, if the gear is slightly eccentric, it is an amplitude modulated sine wave; Orifice plate - approximate square wave.

3、 Gear material

Gear materials should use magnetic permeability Strong metallic materials

Tooth shape

Forming an involute tooth profile is a suitable tooth profile. Using large modulus gears or other tooth profiles will result in significant waveform distortion, which will hinder accurate measurements. If there is axial displacement of the spindle, it should be noted that the center of the magnetic pole should be located at the center of the gear.

4、 Usage requirements

To ensure the normal operation of the sensor, a magnetic transmission gear or an orifice plate gear must be installed on the rotating body to be detected, with a modulus greater than or equal to2During installation, the distance between the sensor end face and the tooth top1mmabout. The sensor output is a dual core high-temperature shielded wire, in which the shielding layer is connected in parallel with either of the dual core wires and then connected to the "- end" of the tachometer magneto electric input. (Standard length of signal line)2mSpecial specifications are less than10m）.

5、 Supporting monitoring device

andSZCBThe monitoring devices equipped with magneto electric speed sensors include:8500B-ZS80Speed module;LH351Speed transmitter;SZC-04Intelligent tachometer

SZCB-01 turbine speed sensor speed probe