VW Crackmeter Model : GV-2403 The VW gauge operates on the principle that a tensioned wire, when ...    More ...

VW Crackmeter Model : GV-2403 The VW gauge operates on the principle that a tensioned wire, when plucked, vibrates at its resonant frequency. The square of this frequency is proportional to the strain in the wire. Around the wire is a magnetic coil which when pulsed by a vibrating wire readout or VW data logger interface plucks the wire and measures the resultant resonant frequency.
  
A change in distance between the anchors caused by the crack opening or closing causes the inner free-sliding rod to move within the outer body which changes the tension on the spring and the vibrating wire thus altering the resonant frequency of the wire. Features

• Displacement monitoring
• Use for Rod Extensometer
• Robust design & Simple structure
• Stainless steel Housing
• High accuracy & resolution
• Long term stability
• Stable Vibrating Wire signal

Specification Items GV-2403
  Range   50mm, 100mm, 150mm, 200mm   
  Rated Output   Hz² x10^-3 digit
  Non-Linearity   Less than 0.1% Rated Output
  Working Temperature   -20°C ~ 80°C
  Outer Diameter   19mm
  Overall Length   Approx 300mm


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