Strain gauge extensometer SG-01

vibrating wire

This device is used to measure strains in tunnel linings, steel struts and reinforcing bars of piles, columns, walls and the like. The vibrating wire extensometer is often used to measure the deformation of metal structures to which it is attached. The deformation of concrete components can also be measured with transducers set in concrete. This instrument guarantees long-term accuracy and stability. Thanks to the frequency signal, it is not affected by the length of the cable or electromagnetic interference. A thermistor for measuring the temperature is embedded in the device. The vibrating wire extensometer works as follows: A steel wire is stretched between two mounting blocks that are fixed to the surface to be measured or set in concrete. Any deformation of these blocks changes the voltage in the steel wire and therefore the resonant frequency. An internal electromagnetic coil measures the resonant frequency and thus the voltage of the wire. Application Monitoring of steel structures and arch supports Pipeline monitoring Bridges and viaducts Monitoring of gravity and arch dams Measurement of tunnel linings Concrete structures, beams and columns Measuring the pile force Measurement in mass concrete Features Reliable long-term use Built-in temperature sensor Waterproof Accurate measured values even with long cable lengths Robust construction n Can be installed in concrete