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Biaxial Stressmeters (VW)

Biaxial Stressmeters (VW)



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Description

The Model 4350 Vibrating Wire Biaxial Stressmeter is designed to measure compressive stress changes in rock, salt, concrete or ice. Three or six Vibrating Wire sensors oriented at 60° intervals allow the principal stress changes to be measured in the plane perpendicular to the stressmeter axis. The stressmeter consists of a high strength steel cylinder which is grouted (or frozen, in the case of ice) into a BX (60 mm) size borehole.


Spesification

Standard Range 70 MPa
Resolution¹ 14 to 70 KPa
Accuracy² ±0.1% F.S.
Temperature Range³
−20°C to +80°C
Borehole Diameter BX (60 mm)

¹Depends on rock modulus.

²Established under laboratory conditions.

³High temperature versions (up to 200°C) available on request.