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1. Overview

The BT8066 is a high-precision hydrostatic settlement monitoring instrument designed for critical vertical displacement tracking. Operating on the communicating tube principle, it delivers an extraordinary 0.01mm resolution with zero measurement drift. Housed in an IP67 aluminum alloy enclosure, it withstands 100% relative humidity environments and communicates via RS485 MODBUS-RTU for seamless structural health monitoring integration.

 

2. Working Principle  

Communicating Vessel Principle: Consists of interconnected liquid-filled containers and a stable reference point. Any elevation change relative to the reference container causes a precise liquid level shift, calculating vertical displacement with ultra-high accuracy.

 

3.  Technical Specifications

Standard Range: 1000mm

Accuracy: ＜±0.5mm

Resolution: 0.01mm

Annual Stability: ＜±0.5mm

Output Signal: RS485

Operating Temperature Range: -20~85°C

Temperature Compensation Range: -20~60°C

Overload Capacity: 200% F•S

Case Material: Aluminum Alloy

Electrical Connection: Waterproof Four-Pin Connector

Protection Grade: IP67

Installation Method: Fix vertically with the exhaust valve upwards

Wiring Method for Output Signal (RS485):

Red – Power +                    Yellow – Power –

Blue – RS485-A                    Green – RS485-B

 

4. Industry Applications & Use Cases

1）Bridges & Highway Infrastructure

Applications: Bridge pier deflection, abutment settlement, and long-span bridge girder deformation monitoring.

Value: Continuous 24/7 tracking of structural degradation caused by heavy traffic loading or foundation settling.

 

2） Tunnels & Urban Subways 

Applications: Metro tunnel vault settlement, shield tunneling disturbance monitoring, and adjacent excavation impact assessment.

Value: IP67 moisture-proof design withstands the 100% relative humidity conditions typical of underground rail systems.

 

3）Dams, Reservoirs & Hydrological Facilities

Applications: Dam crest deformation, spillway foundation differential settlement, and embankment stability tracking.

Value: Zero-drift long-term stability ensures trustworthy early-warning data for critical water conservancy assets.

 

4）Commercial Buildings & Heritage Structures

Applications: Deep foundation pit excavation monitoring, high-rise building differential settlement, and historic masonry structure displacement tracking.

Value: Ultra-fine 0.01mm resolution detects structural shifts long before visible cracking or safety hazards occur.