Product Summary:
The principle of the deepwater MTS magnetostrictive displacement/level sensor is to generate a strain pulse when two different magnetic fields meet, and then calculate the time period required for this signal to be detected 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 a true value, rather than a proportional or re-amplified signal, there is no signal drift or change of value, let alone the need for periodic rescale as with other sensors.
- Product Overview
- Technical Parameters
- Size selection
MTS deep water type small volume, high integration, low power consumption, good sealing performance, explosion-proof Gran head pressing device can withstand 10MPa deep water pressure.
Overview of deepwater MTS Magnetostrictive displacement sensor:
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.
Effective Stroke | 30-5000mm | ||||||||
Power Supply | +12VDC～+24VDC | ||||||||
Output Signal | 4〜20mA、0-20mA,0〜5VDC、0〜10VDC, digital signal：RS485 | ||||||||
Load capacity | Voltage signal output load≥4KΩ Current signal output load≤500Ω | ||||||||
Nonlinear error | ≤0.05%FS | ||||||||
Repeatability error | ≤0.0005%FS | ||||||||
Resolution | 0.038mm | ||||||||
Delay | ≤0.001%FS | ||||||||
Temperature Stability | ≤0.002%/℃ | ||||||||
Working Current | ≤16mA | ||||||||
Working Stress | Continuous operating pressure ≤35MPa (MTL built-in high-voltage series) | ||||||||
Working Temperature | T1：-20～+55℃，T2: -40～+80℃，T3：-50～+125℃ | ||||||||
Rod Material | 0Cr18Ni9 (304) 316 stainless steel (special order) | ||||||||
Shell material of electronic warehouse | 0Cr18Ni9 (304) 316 stainless steel (special order) | ||||||||
Lead way | High temperature resistant double stranded shielded cable (default length: 1m, also available upon request) | ||||||||
Enclosure protection class | IP67、IP68 | ||||||||
2.Installation Dimension
Before wiring, please check whether the power supply meets the requirements of +24VDC, and the power output of the power supply
must be greater than the total power consumption of the product. Each sensor in different ranges is ≤95mA. If the power supply
cannot meet the requirements, please replace the power supply to ensure that the sensor can work properly.
Analog signal output wiring mode of MTS intrinsically safe/explosion-proof magnetostrictive displacement sensor:
3.1 Direct outgoing wiring of waterproof joint:
The sensor has five contacts: the power supply is positive (brown), the power supply is negative (black), the signal output is
positive (blue), the signal output is negative (white), and the housing ground (shielding line).
3.2 Wiring method of aviation plug:
The sensor has a total of five contact points: power positive (brown), power negative (black), signal output positive (blue),
signal output negative (white), shell ground (shielding line)
3.3 Wiring method of hersman plug:
The sensor has four contacts: (1) positive power (brown), (2) positive signal output (blue), (3) negative power (black, white)
Digital signal output wiring mode of MTS intrinsically safe/explosion-proof magnetostrictive displacement sensor:
4.1. Direct outgoing wiring of waterproof joint:
There are five contacts of the sensor: positive power supply (brown), power supply ground (black), RS485A(blue), RS485B (white),
shell ground (shielding line)
4.2. Wiring method of aviation plug:
There are five contacts of the sensor: positive power (brown), power ground (black), RS485A(blue), RS485B (white), shell ground
(shielding line)
