Vibrating Wire Inline Extensometer

Brochure
Manual

DESCRIPTION

The Vibrating Wire Inline Extensometer is used to determine the stability and movement behavior of soil, rock, and concrete structures. The main advantage of the extensometer is that it has no electrical head protruding out of the borehole, contrary to conventional multi-point borehole extensometers (MPBX). The Inline Extensometer is installed flush with the borehole collar or ground surface and measures movement at different depths in the borehole.

APPLICATIONS

  • Ground movements around tunnels.
  • Deformation of concrete piles (tell-tales).
  • Deformations of dam abutments and foundations.
  • Ground movement behind retaining walls, sheet piling, slurry walls, etc.
  • Ground movements in the walls of open pit mines.
  • Fracturing in the roofs and walls of underground caverns.
  • Subsidence above tunnels and mine openings.
  • Settlement and heave of foundations in soft soil.

QUICK SPECS

  • Sensor Range: 25, 50, 100, 150, 200 mm
  • Accuracy: +/- 0.25 % FSR
  • Resolution: 0.02% FSR
  • Linearity: 0.25% FSR
  • Thermal Zero Shift: <0.05% FSR/°C
  • Extensometer Head max/min Diameter: 63.5 mm / 42.5 mm

VIEW ILLUSTRATIONS ON HOW THIS IS USED FOR: