RST vibrating wire strain gauges are available in 3 models: VWSG-A, for arc welding to steel structures; VWSG-S, for spot welding to steel structures and VWSG-E, for embedment in concrete.
Each strain gauge consists of two end blocks or flanges (designed specifically for each application) with a tensioned steel wire between them. As the steel or concrete surface that encompasses the strain gauge undergoes strain, the end blocks or flanges 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 which provides the resultant change in micro-strain measurement.
RSTAR Affinity Data Loggers, DT Series Data Loggers, FlexDAQ Data Loggers or the RST VW2106 Vibrating Wire Readout, (see separate brochures) can be used to read Vibrating Wire Strain Gauges.

Product features

• Long-term stability in difficult environments
• Waterproof
• Built-in thermistor
• High accuracy and resolution
• Rugged design