Tuesday, May 26, 2009

LVDTs Cost-Effectively Monitor Tunnel Deflections

RDP Electronics has introduced a range of water-resistant LVDTs that can monitor movement and deflection in tunnels. Tunnels can be subject to movement and deflections due to the overlying rock strata.

In areas of geological or seismic activity there may be a greater need to monitor movements, as these may foretell damage or even collapse of the structure. RDP LVDTs with 4 - 20mA analogue output can provide accurate responses in what is typically a wet and dirty environment.

Pinned to the tunnel walls, an installation may involve tens or even hundreds of LVDTs with cable runs of 100m or more, which is made possible using these analogue devices.

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