Grab the beam pin positioning sensor

1. Product Introduction

​WT-C(J)M series pin synchronous displacement sensor​
A high-precision displacement monitoring device specially developed for underwater hydraulic grab beams. Core adoptionMagnetic grid non-contact measurement technologyThrough6mm thick 304 stainless steel casingAchieve deep-water impact resistance protection, providing for the pin travel and gate positioningMonitoring with ±0.1mm grade accuracyCompletely solve the problems of seal failure and signal attenuation of traditional sensors.

2. Main functions

​Dual-channel precise perception and industrial communication innovation​

• ​Thread and pin travel monitoring​
  Customized measurement of the hydraulic pin shaft movement trajectory (matching stroke according to pin shaft length)
  Blind zone control < 3% range, ensuring effective coverage throughout the entire stroke
• ​Gate positioning inspection​
  Real-time tracking of the settlement height and positioning accuracy of the gate
• ​Bus-based signal transmission​
  Four sensors connected in parallel only require a 2-core cable
  Anti-interference transmission of RS-485 communication (1500 meters effective distance)
• ​Dynamic sealing guarantee​
  A 72-hour sealing test with a 3MPa water pressure (at a water depth of 300 meters) before leaving the factory

3. Scope of application

​Rigid demand scenarios under extreme working conditions​

• ​Deep-water beam threading system​
  Hydraulic pin shaft stroke monitoring (with M8 bolt installation hole position)
  Precise tracking of gate subsidence (the inner diameter of the sleeve must be greater than the diameter of the sensor)
• ​High sediment/high flow rate waters​
  The 304 stainless steel shell resists the impact of debris and the corrosion of sand and mud
• ​Multi-device cluster deployment​
  The RS-485 bus supports networking of 32 devices, saving the cost of 80% cables
• ​Long-term maintenance-free scenarios​
  The modular circuit design supports quick replacement (no need to return to the factory for repair).

4. Model description

▶ ​WT-CM through-pin dedicated sensor

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• ​Core parameters​
  ▸ ​Measure the strokeCustomized according to the actual length of the hydraulic pin shaft (marked on the left side of Figure 1)
  ▸ ​Blind spot controlThe total of the blind zones before and after is less than the range of 31T to 3T
  ▸ ​Installation specificationsM8 fixed bolt holes (for the hole spacing, please refer to the drawing marking)
  ▸ ​Electrical characteristics: DC24V power supply/RS485 output / 9600 baud rate

▶ ​WT-JM positioning monitoring sensor​

• ​Core parameters​
  ▸ ​Measure heightCustomized according to the depth of the gate sleeve (marked on the right side of Figure 1)
  ▸ ​Installation constraintsThe inner diameter of the sleeve should be greater than the outer diameter of the sensor by 5mm
  ▸ ​Enhanced protection: 304 stainless steel integral turning shell

▶ ​Selection rules for magnetic excitation type​

​Five-level customized signage system​
Electronic compartment structure - measuring rod type - head length - range - end length - interface form - cable length

• ​Selection example​：3-T-50-800-25-P-20
  ▸ ​3Stainless steel electronic cabin (resistant to salt spray corrosion)
  ▸ ​​T​Φ10 stainless steel measuring rod (standard for deep water)
  ▸ ​50/800/25First end: 50mm+ range: 800mm+ end: 25mm
  ▸ ​​P​Cable direct output type (optional D aviation plug)
  ▸ ​20Cable length: 20 meters (50-meter customization supported)