Cảm biến đo biến dạng vết nứt Geokon 4420

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.

Specifications

Standard Ranges¹ 12.5, 25, 50, 100, 150 mm

Resolution 0.025% F.S.

Accuracy ±0.1% F.S.

Nonlinearity <0.5% F.S.

Temperature Range −20°C to +80°C

Diameter 8 mm (shaft) / 25 mm (coil)

Lengths² 325, 333, 379, 543, 685 mm (transducer)

¹Other ranges available on request.

²Length dimensions are in mid-range position.