The DIGI SENS sensors have an intrinsic safety for two different reasons: First of all, because measuring system is active disturbances are always recognized as such (the vibration stops). When changes in electrical resistances are made, it is not always possible to distinguish between a sensor signal and for example a cable-or socket problem.

Measurement of an explosive silo 

The second reason is that the vibrating-wire is suitable for places that have a big risk of explosion and fire, because their waste of energy is low.