VW STRAIN GAUGE STRAND ANCHOR VWS-2800
The VWS-2800 vibrating wire strain gauge is designed for the monitoring of strain along stranded anchors.
The gauge is housed within a robust cover to de-bond it from the surrounding grout and the specially-designed mounting blocks ensure the strain is transferred from the strand to the gauge. The low profile design means that multiple sensors can be installed along the bonded length of strand anchors.
Description
The strain gauge operates on the principle that a tensioned wire, when plucked, vibrates at its resonant frequency. The square of this frequency is proportional to the strain in the wire.
The gauge consists of two end blocks with a tensioned steel wire between them. The end blocks can be attached by either arc welding, bonding or groutable anchors to steel or concrete.
Around the wire is a magnetic coil which, when pulsed by a vibrating readout or data logger interface, plucks the wire and measures the resultant resonant frequency of vibration. As the steel undergoes strain the end blocks will move relative to each other. The tension in the wire between the blocks will change accordingly thus altering the resonant frequency of the wire.
Additional information
| Brands | |
|---|---|
| Strain Range |
7500 με |
| Gauge length |
150mm |
| Overall length |
156mm |
| Resolution |
1 με |
| Accuracy |
±0.1% to ±0.5% FS |
| Non linearity |
<0.5% FS |
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About brand
Geosense Ltd is one of Europe’s leading manufacturers and suppliers of instruments to the geotechnical, civil engineering, mining and environmental industries.
Geosense products are used globally in major projects in more than 68 countries. With a comprehensive in-house design and manufacturing capability, we can provide products not only to tight deadlines but also to suit custom-engineered solutions for specific project requirements.
Geosense specialises in the manufacture of vibrating wire and MEMS sensors, which are used to produce a wide range of instruments. In addition we manufacture automated data acquisition systems to complement our sensors, including wireless systems.
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