Geosense Vibrating Wire Strain Gauge - ...

Geosense - Vibrating Wire Strain Gauge - Surface Mount

Vibrating Wire Strain Gauge - Surface Mount

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Strain gauges offer the ability to measure the effect of loads, settlement or other changes in a structure. They record strain, which is a dimensionless measure of deformation. Stress is related to strain by a material’s properties and is predictable within a certain range of applied strain.

Strain gauges are useful for determining the effects of applied loads to a structure, such as the loading of post tension cables or removal of temporary supports. Piles of driven, cast or pre cast construction can also benefit from strain measurement as with sufficient strain gauges information such as the depth at which the load is transferred to the soil and the percentage of the load born as end bearing can be determined.

Geosense® VWS-2000 series vibrating wire surface strain mount gauges are designed for the long term monitoring of steel or concrete structures. Gauges may be attached to steel structures by arc welding or using alternative end blocks, bonded or grouted into concrete.

Features

Reliable long term performance
Rugged, suitable for demanding environments
Range of mounting blocks
Insensitive to long cable lengths.
High accuracy
Integral Thermistor for temperature correction
Suitable for remote reading and data logging

Applications

Measurement of stress and strain deformation in:

Steel struts
Excavation support systems
Driven and bored piles
Tunnel linings
Bridges & arches
On-board truck weighing

Specifications

VWS-2000 vibrating wire strain gauges may be read by the VW-2106 or any vibrating wire readout device and may be readily connected with data loggers with vibrating wire interface modules.
Vibrating wire strain gauges output a frequency signal and are therefore insensitive to resistance changes in connecting cables caused by contact resistance or leakage to ground.
Cable may be readily and simply extended on site without special precautions. Gauges may be read up to 1000 metres away from their installed location without change in calibration.

Accessories and Customisation

To order VWS-2000 series strain gauges the following information should be specified:

Gauge length
Anchor type
Cable length
The accessories below will speed installation and data collection:
Readout or datalogger
Setting tool
Spacing jig
Dummy gauge

Readout Systems

Custom datalogger systems for any number of sensors in any configuration are also available and can be designed on request.Please see our other data sheets for details of readout equipment, terminal boxes and data loggers specific to vibrating wire devices.

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