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.
Specifications
| Standard Range | 70 MPa |
| Resolution¹ | 14 to 70 KPa |
| Accuracy | ±0.1% F.S. |
| Temperature Range² | −20°C to +80°C |
| Borehole Diameter | BX (60 mm) |
¹Depends on rock modulus.
²High temperature versions (up to 200°C) available on request.
