Electrolevel Beam Sensors detect differential movement and rotation in structures. Two versions of the beam sensor are available: horizontal for monitoring settlement or heave and vertical for monitoring lateral displacement and convergence.

Since the EL beam sensor has a defined gauge length, changes in tilt can be converted simply and accurately to millimetres of movement, regardless of the rigidity of the structure. Linked end to end, beam sensors can provide absolute displacement and settlement profiles.

Typical applications include:

• Monitoring stabilisation measures, such as pressure grouting and underpinning
• Monitoring structures for the effects of tunnelling and excavating
• Evaluating the performance of bridges and beams under load
• Monitoring the stability of structures in landslide areas
• Monitoring the deflection and deformation of retaining walls
• Monitoring convergence and other movements in tunnels