Grab Beam Pin-Type Displacement Sensor

**Impact-Resistant and Corrosion-Proof:** Most competing products currently on the market utilize 1.2mm-thick 201-grade stainless steel housings, which are unable to withstand the impact of debris or the corrosive effects of prolonged underwater immersion. In contrast, WTAU’s grab-beam underwater shear pin sensors feature a robust 6mm-thick 304-grade stainless steel housing. Boasting high mechanical strength, these sensors are capable of enduring harsh environments—including strong water currents, high pressure, and high sediment loads—and can remain submerged underwater for extended periods without succumbing to corrosion.

 **Minimal Cabling and Stable Communication:** Most comparable sensors currently available on the market rely on discrete (switch) outputs or 4–20mA analog signals. Each such sensor typically requires 1–2 dedicated cables; this not only introduces issues related to analog signal instability and attenuation but also drives up the costs associated with deep-sea cabling and cable reels. WTAU’s underwater shear pin sensors, however, utilize an RS-485 bus interface. This allows for the acquisition of signals from four separate displacement sensors using just two cables. By employing a balanced transmission method, the RS-485 bus supports transmission distances of up to 1,500 meters; furthermore, multiple drivers and receivers can share a single transmission line, offering exceptional immunity to common-mode interference.

**Field-Configurable Communication Addresses:** The RS-485 communication addresses for WTAU’s underwater shear pin sensors can be modified on-site via software, eliminating the need to return the units to the factory. This capability effectively prevents address conflicts with other on-site equipment, thereby providing significant operational convenience for the user.