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Stressmeters

Borehole Pressure Cells | Model 3200

  • Model 3200 Hydraulic Borehole Pressure Cells pictured with pressure transducer (front) and stainless steel pressure gage (rear).
  • Model 3200 Hydraulic Borehole Pressure Cells pictured with pressure transducer (front) and stainless steel pressure gage (rear).
  • Model 3200 Hydraulic Borehole Pressure Cell dimensions.
SKU:
Model 3200

The standard Borehole Pressure Cell (BPC) is used to measure rock stress changes and is designed to be grouted inside a borehole. The BPC is manufactured from two steel plates welded together around their periphery. The plates are deformed into a “dog bone” configuration (i.e. the borehole flatjack) so that they can be expanded easily, without damage to the welds. Hydraulic oil fills the space between the two plates and a high-pressure stainless steel tube connects the plates to a stainless steel pressure gauge and/or a pressure transducer.

Specifications

Standard Ranges
5, 7.5, 10, 20, 35, 75, 100 MPa
Resolution
0.25% of range (approximately)
Accuracy
0.25% F.S. (gauge); 0.1% F.S. (VW transducer)
Borehole Size
57 mm
Temperature Range
−20°C to +80°C
L × W × H
203 × 47.6 × 12.7 mm (borehole flatjack only)
508 × 47.6 × 12.7 mm (borehole flatjack with stainless steel tube)

Please Note: GEOKON maintains an ongoing policy of design review and reserves the right to amend products and specifications without notice. Various instruments are discontinued over time and replaced with new, updated models.

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