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Biaxial Stressmeters (VW)

Biaxial Stressmeters (VW)

Order Catalog


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.


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.