Overview:
The change in the direction of magnetization in the ferromagnetic material will cause the change in the lattice spacing of the medium, so that the length and volume of the ferromagnetic material will change, that is, the magnetostriction phenomenon, also known as the Wiederman effect, and its inverse effect is called the Villari effect.
The principle of magnetostrictive displacement sensor is to generate a strain pulse signal when two different magnetic fields intersect, and then calculate the time period required for this signal to be detected, so as to convert the accurate position. The two magnetic fields, one from the permanent magnet in the magnetic ring, and the other from the excitation pulse generated by the electronic components in the sensor's electronic compartment. The excitation pulse travels at the speed of sound along a waveguide filament made of magnetostrictive material inside the sensor. When intersecting with the permanent magnet field in the magnetic ring, the mechanical vibration generated by the waveguide wire forms a strain pulse due to magnetostriction. The strain pulse is quickly detected by a sensing circuit in the electronic chamber. From the moment when the excitation pulse is generated to the total time when the strain pulse is detected by a fixed sound speed, we can accurately calculate the position change of the magnet. This process is continuous, so whenever the position of the magnetic ring changes, the new position is quickly measured. Since the output signal is a true position value, rather than a proportional or reamplified signal, there is no signal drift or variation, let alone the need to periodically re-label as with other sensors.
Magnetostrictive sensors are non-contact and never wear out. It has the advantages of high resolution, high precision, high stability, high reliability, fast response time and long working life. Sensors do not need to be re-calibrated or regularly maintained.
Performance parameter
1. Measuring range :30 ~ 5000mm
2. Power supply voltage: +12VDC ~ +24VDC
Connection method
Before connecting cables, ensure that the power supply meets the requirement of +24VDC and that the output power of the power supply is greater than or equal to 95mA for each sensor. If the power supply cannot meet the requirements, replace the power supply to ensure the normal operation of the sensor.
Analog signal output wiring mode:
The sensor has four contacts: (1) positive power supply (brown), (2) positive signal output (blue), (3) negative power supply (black, white) E, shell ground (shielded line)
Digital signal output wiring mode:
1. Direct connection of waterproof connector:
The sensor has five contacts: positive power supply (brown), power supply ground (black), RS485A(blue), RS485B (white), housing ground (shielded wire)
2. Aviation plug wiring:
The sensor has five contacts: ① positive power supply (brown), ② power supply ground (black), ③RS485A(blue), ④RS485B (white), ⑤ housing ground (shielded wire)
MTG pull rod magnetostrictive displacement sensor application field:
MTG is general and suitable for position detection of various types of equipment, such as: injection molding machine, die casting machine, rubber machine, shoe machine, EVA injection molding machine, hollow bottle blowing machine, woodworking machinery, hydraulic press, etc.
Model Selection:
