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Borehole Pressure Cells Model 3200

Borehole Pressure Cells Model 3200

The standard Borehole Pressure Cell (BPC) is used to measure rock stress changes and is designed to be grouted inside

Description

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 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 gage and/or a pressure transducer.

Spesification

Standard Ranges
20, 35, 75 MPa
Resolution
0.25% of range (approximately)
Accuracy¹
0.25% F.S. (gage); 0.1% F.S. (VW transducer)
Borehole Size
57 mm
Temperature Range²
−20°C to +80°C
L × W × H
210 × 51 × 6 mm