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Borehole Pressure Cells | Model 3200
Thiết bị đo ứng suất hố khoan Geokon 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 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.
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
¹VW transducer accuracy established under laboratory conditions.
²Other ranges available on request.