Model 4425

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Convergence Meters (VW) 

The Model 4425 Convergence Meter is used to monitor closures in underground excavationstunnels, 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 Lengths: varies with application

¹Other ranges available on request.

²Accuracy established under laboratory conditions.