Crackmeters (VW)

Crackmeters (VW)



Order

Description

The Model 4420 Crackmeter is intended to measure movement across surface cracks and joints. It is installed by grouting, bolting, or bonding two threaded anchors (with ball joints) on opposite sides of the crack and then attaching the ends of the gage to the anchors.


Spesification

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
Lengths³ 318, 343, 397, 555, 645 mm (transducer)
Diameter 8 mm (shaft); 25 mm (coil)