Rugged Vibrating Wire Strain Gauges for Long-Term Structural Monitoring
Overview
Advanced Technologies from Trusted Partners
Core Components
Hardware Products (from GAO Tek & GAO RFID)
Vibrating Wire Embedment Strain Gauge – GAO Tek
Designed for embedding in concrete and other structural materials for long-term internal strain monitoring.
Surface-Mounted Vibrating Wire Strain Gauge – GAO Tek
Ideal for installation on steel or concrete surfaces where retrofitting is required.
Vibrating Wire Sister Bar Strain Gauge – GAO Tek
Commonly used in reinforced concrete applications for precise rebar strain measurement.
Thermally Compensated VW Strain Gauge – GAO Tek
Integrates temperature correction to ensure accurate readings in fluctuating climates.
Wireless VW Data Logger Node – GAO RFID
Supports remote monitoring and data transmission via IoT for difficult-to-access sites.
Software and Systems
GAO Tek VW Data Acquisition Software
Collects, visualizes, and manages data from multiple vibrating wire gauges.
GAO RFID Wireless Gateway & Analytics Platform
Integrates field data with centralized cloud systems for real-time reporting and alerts.
Key Features and Functionalities
- High stability and long-term measurement accuracy
- Immune to signal degradation over long cable runs
- Resistant to water, dust, temperature extremes, and corrosive environments
- Thermally compensated models available for precise performance in variable climates
- Suitable for both embedment and surface-mount configurations
System Compatibility
- Compatible with industry-standard VW readout units and dataloggers
- Interfaces with wireless telemetry systems and SCADA platforms
- Integrates easily with long-term geotechnical and structural monitoring networks
- Works with USB, RS-232, and wireless output modules
- Durable design supports rugged field installations and long cable extensions

Applications
- Monitoring internal strain in concrete dams, tunnels, and retaining walls
- Structural health tracking in bridges, high-rises, and historical buildings
- Mining shaft and slope stability monitoring
- Geotechnical monitoring in embankments and foundations
- Real-time industrial process monitoring and diagnostics
Industries We Serve
Civil & Structural Engineering
Mining & Geotechnical Engineering
Transportation Infrastructure
Dams & Hydroelectric Power
Environmental Monitoring
Research and Academia

Relevant U.S. & Canadian Industry Standards
- ASTM D7200
- AASHTO T277
- CSA A23.3
- MIL-STD-810G
- IEEE 1451