Some usage characteristics of magnetostrictive displacement sensor
The magnetostrictive displacement sensor is mainly composed of a measuring rod, an electronic compartment and a non-contact magnetic ring set on the measuring rod. The measuring rod is equipped with a measuring inductive element (waveguide) made of ferromagnetic material, and the outside is covered with a stainless steel tube to protect the waveguide wire. When working, an initial pulse is generated by the electronic circuit in the electronic chamber. When the initial pulse is transmitted in the waveguide wire, a rotating magnetic field along the direction of the waveguide wire is generated at the same time. When this magnetic field meets the permanent magnetic field of the magnetic ring, A magnetostrictive effect is generated, causing the waveguide wire to twist. This twist is sensed by the enabling mechanism installed in the electronic compartment and converted into a corresponding current pulse. The time difference between the two pulses is calculated by the electronic circuit. The measured displacement can be accurately measured.
As a new position detection sensor, the magnetostrictive displacement sensor mainly has the following characteristics:
1) There is no direct contact between the detection magnetic ring and the sensor. Even if the detection is repeated continuously, it will not cause any wear to the sensor. Therefore, the sensor can be used in extremely harsh industrial environments and is not easily affected by oil stains, solutions, dust or other pollution. High detection reliability and long service life;
2) Using high-tech materials and advanced electronic processing technology, it can be used in high-temperature, high-pressure and high-vibration environments;
3) The output signal of the sensor is an absolute displacement value, even if the power is interrupted or reconnected, the data will not be lost, and there is no need to reset to zero;
4) Since the output signal is a real absolute value, not a proportional or amplified signal, there is no signal drift or value change, and there is no need for regular re-marking;
5) The installation is flexible and convenient, providing split and flexible outer tubes, adapting to various installation conditions on site.
6) There are many electrical signal output modes, and the user can choose from a wide range, such as SSI, Profibus-Dp, CANBus, DeviceNet, etc.;
7) Using high-tech materials and advanced electronic processing technology, it can be used in high-temperature, high-pressure and high-vibration environments;
