Convergence Meters (VW)

The Model 4425 Convergence Meter is used to monitor closures in underground excavations,tunnels, etc. It is comprised of a spring tensioned transducer, turnbuckle, connecting rod (stainless steel, fiberglass or graphite), rod clamp, and a pair of stainless steel eyebolts.

Specifications

Standard Ranges¹ 12.5, 25, 50, 100, 150 mm
Resolution 0.025% F.S.
Accuracy² ±0.1% F.S.
Nonlinearity <0.5% F.S.
Temperature Range¹ −20°C to +80°C
Transducer Lengths³ 360, 360, 508, 838, 1260 mm

¹Other ranges available on request.

²Accuracy established under laboratory conditions.

³Transducer length dimensions are without turnbuckle.