Interfels Vibrating Wire (VW) Load Cells are ideally suited for measuring loads in rock bolts, cable anchors and tendons, structural beams, piles, loads between tunnel supports and loads in pull-out tests on trial anchors.

The VW load cell consists of a high strength steel alloy cylindrical housing with three to six vibrating wire gauges for measuring the compression of the cylinder under load. The readings of all gauges are averaged thus minimising the detrimental effects of eccentric or uneven loading. Furthermore the cells are fitted with thermistors for correcting the effects of temperature variations on load readings.

All cells are manufactured with a centre hole to accommodate rockbolts, tendons or anchor cables. For use as a solid centre cell the instrument can be supplied with top and bottom load plates.

A heavy gauge multi-core, PVC sheathed cable connects the load cell to the read-out unit via a switched terminal unit. Alternatively load cells can be wired direct to dataloggers.