Vibrating Wire Strain Gauges

Reference products codes: VK40, VK4000VS, VK4000, VK4200VC, VK4200, VK4200VC, VK4200VN, VKBAR

Vibrating wire strain gages are used to monitor strain in steel or in reinforced concrete and massive concrete structures.

Arc-weldable VW strain-gauges are designed for arc welding to steel structure such as tunnel linings, piles and bridges.

Embedment VW strain-gauges are directly embedded in concrete for strain measurements of piles, foundations, dams, tunnel, etc.

Due to the instruments long life and high reliability, vibrating wire straing gage are the most robust solution to monitor strain in concrete and metal structures.

Vibrating wire transducer is essentially composed by a taut wire clamped at its ends and tensioned so that it is free to vibrate at its natural frequency. The frequency of vibration varies with the wire tension and thus small relative movements between the two end clamps.
With VW transducers frequencies rather than voltage levels are measured, so a dedicated readout/datalogger must be used to measure the resonant frequency. These ones excites the VW transducer, measures the response, performs some calculations on the response, and returns the result.
SISGEO VW transducer uses ‘pluck and read’ method and not ‘auto resonant’ method; when the readout/datalogger plucks the wire a magnetic attraction is created to the coil and the wire start to vibrate and it causes an alternating voltage of the same frequency of the natural frequency of the wire; the voltage signal is transmitted on the cable and read from the readout/datalogger.
VW transducers have a reputation for long expected life and long-term stability.

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Vibrating Wire Strain Gauges - Sisgeo Pills

Vibrating Wire Strain Gauges - Sisgeo Pills

Vibrating wire strain gauges provide measurements of strain in steel or concrete structures. The measurements are used to calculate structural loads.

Our models:
VK4000VS00 – WELDABLE STRAIN GAUGE
VK4000VSC0 – CONCRETE SURFACE STRAIN GAUGE
VK4200VC00 / 0VK4200VCHP EMBEDMENT STRAIN GAUGES
VK4000SM00 SHOTCRETE EMBEDMENT STRAIN GAUGE