Vibrating Fork | Rod Level Switch

In application, the vibrating blades / rod is driven by a piezo crystal excited by the electronics system. The driving signal changes the physical shape of the piezo crystal which causes the mechanical vibration of the blades / rod, much like a piezo type loudspeaker. The perfectly balanced mechanical system then resonates at the frequency of the drive signal. The blade / rod design is carefully balanced to provide a very low loss “tip sensitive” vibrating system and requires a very small amount of energy to keep the system vibrating. A second piezo crystal is used to detect the vibration of the blades, in turn signalling to the electronics if the blades are covered