Spot weldable Strain Gauges
More Information
GEO-DS-0084 Spot Weldable Strain Guages
Australia Tel: +61 (0)3 8720 6700
Indonesia Tel: +62 21 2278 3377
New Zealand Tel: +64 (0)7 850 2610
South Africa Tel: +27 (0)10 900 2055
Description
Applications:
Designed to steel structures in:
- Tunnels
- Excavation bracing
- Piles
Bridges Standard unit has a 150mm gauge length, a 3000µε range The gauge is adaptable for bonding to concrete or bolting to steel surfaces via the end mounting blocks.
Operating Principle:
Steel wire length is tensioned between two mounting blocks that are arc welded to the surface of a structural steel member. Deformation of the structure under load produces relative movement between the two mounting blocks causing a change in wire tension and a corresponding change in its frequency of vibration. Using standard vibrating wire principles easily read by loggers or readout.
Advantages:
- Robust user-friendly design
- Long term stability
- High water resistance
- Read over long cable lengths
- Read with standard vibrating wire loggers and readouts.
- Removable coil so easy replacement if cable is damaged
Automatic temperature compensation via hermetically sealed thermistor.
Specifications:
- Standard Range: 3000ε
- Resolution: 0.4ε
- Accuracy: ±0.5% F.S.
- Nonlinearity: <0.5% F.S.
- Temperature Range: -20 to +80
- Active Length: 51mm