Hydraulic Borehole Stress Cell


The Model 3000 Hydraulic Borehole Stress Cell is a soft inclusion type cell consisting of an inflatable flat jack with or without platens. The cell is placed in a 50mm diameter borehole and then pressurised. Stress change is monitored with either a Bourdon tube gauge or any suitable diaphragm type pressure transducer (see Model 1200 for details) or both.


For stress change monitoring in:

  • Underground mines
  • Tunnels
  • Support pillars
  • Deep excavations
  • Shafts
  • Applications where electronic devices can not be used (if not filled with electronic diaphragm pressure transducer)


  • Manual visual reading
  • Simplified installation
  • Corrosion resistant
  • Waterproof
  • Long-term stability
  • Suitable for remote readout
  • Rugged construction
  • Not affected by long cable lengths
  • Able to be connected to datalogging systems
  • User specified diaphragm pressure transducer

Specifications for the Model 3000 Hydraulic Borehole Stress Cell

  • Pressure ranges (MPa): 10, 16, 25, 40, 60
  • Accuracy: ± 0.5 % full scale
  • Borehole diameter: 51 mm
  • Maximum borehole Length: 20 metres
  • Measurement options: Bourdon pressure gauge and/or diaphragm pressure transducer
  • Dimension: 51 mm x 250 mm long
  • Weight: 3.5 kg

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