Product Summary:
The principle of the gate opening external pull-rod (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, thereby converting the accurate position.One of these two magnetic fields comes from the permanent magnet in the magnetic ring, and the other comes from the excitation pulse generated by the electronic components in the sensor electronics compartment.The excitation pulse travels 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 sensing circuits in the electronics chamber.Gate opening external pull-rod (magnetostrictive) displacement sensor multiplies the total time from the moment the excitation pulse is generated to the detection of the strain pulse by the fixed speed of sound, and 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 real value, rather than a proportional or signal that needs to be re-amplified, there is no signal drift or value change, and there is no need for regular recalibration like other sensors.
- Product Overview
- Technical Parameters
- Size selection
Gate opening external tie rod type (Magnetostrictive) displacement sensor 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.
Gate opening external tie rod type (magnetostriction) displacement sensor standard parameters:
Model | MKDC gate opening external tie rod type (magnetostriction) displacement sensor | Effective travel | 50mm-12000mm |
Resolution | ≤0.05mm | Non-Linearity | ≤±0.05%FS |
Repeatability | ≤±0.005%FS | Power supply | DC24V |
Lag | ≤0.001%FS | Temperature stability | ≤0.002%/℃ |
Output signal | Current signal：4-20mA，0-20mA， Digital signal：CANopen，SSI， RS485(MODBUS-RTU) | Load capacity | Voltage signal output load ≥4KΩ, Current signal output load ≤500Ω
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Lag | ≤0.001%FS | Temperature stability | ≤0.002%/℃ |
Working environment temperature | -40℃～80℃ | Protection grade | IP68 |
Lightning protection | Yes（GB/T 17626.5-2019） | ANTI SURGE | Yes（GB/T 17626.5-2019） |
Anti-static | Yes（GB/T 17626.2） | Anti-vibration | 10Hz to 2000Hz，5g |
Anti-corrosion | Salt spray test 24 hours, level 6 |
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Installation direction | Vertical installation, tilt installation, horizontal installation | Installation way | Hoop mounting (size can be customized) |
Pull rod type | Round pull rod type, square pull rod type |
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Rod material | Waterproof cable connector outlet, line length standard 10 meters (line length can also be customized) | ||
Gate opening external rod type (magnetostrictive) displacement sensor wiring method: Before wiring, the user please check whether the power supply meets the requirements of: +24VDC, and the power output power must be greater than the total power consumption of the product. Sensor ≤95mA calculation.If the power supply cannot meet the requirements, please replace the power supply to ensure that the sensor can work normally.4. Installation dimensions of external pull-rod type (magnetostrictive) displacement sensor for gate opening:
Selection of external pull-rod type (magnetostrictive) displacement sensor for gate opening:
