VW DISPLACEMENT GAUGE VWDT-6000
The VWDT-6000 series of spring-loaded vibrating wire displacement transducers which cover displacement ranges up to 75mm and are fully waterproof to a minimum of IP68 (16 bar external pressure). They can be incorporated into many displacement products such as crack joint meters, convergence meters, soil extensometers and displacement meters.
Description
VWDT-6000 transducers are particularly rugged and are carefully constructed and thermally aged to minimise long term drift and changes in calibration. The gauges will withstand demanding environmental factors encountered in Civil Engineering construction sites such as tunnels and piling applications.
The data from the VWDT-6000 can be monitored by means of a portable read-out unit or connected to a data logger and distributed if required by telemetry.
Vibrating wire instruments 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 meters away from their installed location, without change in calibration.
Instruments may be read by any commercially available Vibrating wire readout system operating on either the pluck pulse or swept frequency excitation principle, provided that these units operate over the frequency range of the instruments. In addition, these instruments can be data-logged by a variety of data-loggers equipped with vibrating wire excitation modules including Campbell Scientific and Datataker, units.
Units are supplied with a ball end to ensure minimum contact point to ensure accurate readings.
Additional information
| Brands | |
|---|---|
| Range |
12.5, 25, 50, 75mm |
| Excitation |
Pluck or swept frequency |
| Thermistor |
3k Ohms at 25 °C |
| Resolution |
0.025% FS |
| Accuracy |
±0.1% FSO |
| Non linearity |
<0.5% FS |
| Operating range |
-20 °C +100 °C |
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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.
Data Sheets
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