Hanging pendulums are designed to monitor horizontal movements in dams, dam foundations, abutments and to determine the structural movements of bridges, piers, towers and tall buildings. The direct pendulum consists of a steel wire anchored at the upper end to the structure, with a tensioning weight suspended at the lower end which is free to move in a tank filled by a damping fluid. The inverted pendulum provides a fixed datum from which structural movements can be measured. It uses the identical wire anchored in firm soil beneath the structure, with a floating unit fixed to its upper end. The floating unit is free to move in a fluid tank keeping the wire vertically. Inverted and direct pendulums are often installed together in the same structure.

TEL-310S Telecoordinometer (Telependulum) is designed for automatic readings of the coordinates of the pendulum plumb lines (direct or inverted). TEL-310S is characterized by high resolution and the possibility of measuring many steel wire simultaneously. Moreover this instrument offers auto-diagnostic functions for measurements validation through a built-in high performance software. Either local readings by portable PC or remote operation via RS-485 serial interface are possible. TEL-310 is also implemented with 4-20 mA output for ADK-100 network application.

The new version of TEL-310S Telecoordinometer (3rd generation) offer:
- Wide measuring range: 60x145mm;
- Waterproof components IP68 until 50kPa (5m water head);
- Flexible structures for easy maintenance;
- Remote auto-diagnostic through log file;
- High level built-in software for statistical data elaboration and validation;