In ferromagnetic material, the change of magnetization direction will cause the change of dielectric lattice spacing, so that the length and volume of ferromagnetic material change, namely: magnetostriction phenomenon, also known as the Widman effect, and its inverse effect is known as 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 calculate the exact position. One comes from a permanent magnet in the ring and the other from an excitation pulse generated by an electronic component in the sensor's electronics chamber. The excitation pulse runs at the speed of sound along a waveguide wire made of magnetostrictive material inside the sensor. When intersecting with the permanent magnetic field in the magnetic ring, the mechanical vibration generated by the waveguide wire forms a strain pulse due to the magnetostriction phenomenon. The strain pulse is quickly detected by a sensing circuit in the electronic chamber. Multiply the total time from the moment the excitation pulse is generated until the strain pulse is detected by a fixed speed of sound, and we can accurately calculate the position change of the magnet. The process is continuous, so every time the position of the ring changes, a new position is quickly measured. Since the output signal is the true position value, rather than a proportional or re-amplified signal, there is no signal drift or change of value, let alone the need to periodically resold as with other sensors.
MTL2 Magnetostrictive displacement/level sensor Standard parameters:
1. Range :50 ~ 5000mm
2. Supply voltage: +12VDC to +24VDC
3. Output form/analog signal: current 4-20mA and 0-20mA, voltage 0-5V and 0-10V, digital signal: RS485, MODBUS
4. Load capacity: voltage signal output load ≥4KΩ current signal output load ≤500Ω
5. Nonlinear error :≤0.05%FS
6 repeatability error :≤0.0005%FS
7 resolution :≤0.038mm
8. Hysteresis: acuities were 0.001% FS
9. Temperature stability: ≤0.002%/℃
10. Working current: ≤16mA
11. Working pressure: continuous working pressure ≤35MPa (MTL built-in high pressure series)
12. Operating temperature :T1: -20 ~ +55℃, T2: -40 ~ +80℃,
13. Measuring rod material: 0Cr18Ni9 (304) 316 stainless steel (special customization)
14. Electronic chamber shell material :0Cr18Ni9 (304) 316 stainless steel (special customization)
15. Lead mode: high temperature resistant twisted-pair shielded cable (default length: 1m, can also be provided according to user requirements)
16. Enclosure protection class: IP65
MTL2 Magnetostrictive displacement sensor/liquid level Connection:
Before connecting cables, check whether the power supply meets the requirements of +24VDC and the output power must be greater than the total power consumption of the product. The output power of the power supply must be less than or equal to 95mA for each sensor in different range. If the power supply fails to meet requirements, replace the power supply to ensure that the sensor can work normally.
MTL2 Magnetostrictive displacement/liquid level sensor analog signal output wiring mode:
1. Direct outlet cable connection of waterproof connector:
The sensor has five contacts: positive power supply (brown), negative power supply (black), positive signal output (blue), negative signal output (white), shell ground (shielded wire)
2. Wiring mode of aviation plug:
The sensor has five contacts: ① positive power supply (brown), ② negative power supply (black), ③ positive signal output (blue), ④ negative signal output (white), ⑤ shell ground (shielded wire)
Digital signal output wiring of MTL2 magnetostrictive displacement/level sensor:
1. Direct outlet cable connection of waterproof connector:
The sensor has five contacts: positive power supply (brown), power supply ground (black), RS485A(blue), RS485B (white), shell ground (shielded wire)
2. Wiring mode of aviation plug:
The sensor has five contacts: ① positive power supply (brown), ② power supply ground (black), ③RS485A(blue), ④RS485B (white), ⑤ shell ground (shielded wire)
MTL2 Magnetostrictive displacement sensor Applications:
Preset and feedback servo hydraulic oil cylinder piston position, preset and feedback servo cylinder piston position, position of grinding machines preset and feedback, casting forging machine tool preset position and feedback, provisioning and other machinery, such as gantry machine tool position feedback, boring machine, the position of shield machine, the coal mining machine oil cylinder presets and feedback, project promotion machine oil cylinder position presets and feedback, Rolling mill, such as steel mills and feedback, machine oil cylinder position preset provisioning and bottle blowing machine oil cylinder position feedback, injection molding machine oil cylinder position presets and feedback, the adjustment of the railways, Bridges, water level detection, sluice control, and feedback, wood mechanical position preset cylinder liquid level and feedback, the location of the preset chemical container liquid level and feedback, the location of the preset water and sewage treatment system, Geodetic system, gate opening position presetting and feedback, cylinder level measurement.
MTL2 Magnetostrictive displacement sensor installation dimension drawings:
