Vibrating tuning fork switches are point level switches designed based on the vibrating tuning fork principle. These instruments take point level measurement of solids and liquids and can be used in high static bulk powder environments.
To provide point level measurement readings, the vibrating tuning fork level switch is positioned inside a tank at a specified level. Voltage is then applied to the tuning fork to create a frequency that produces oscillations of the fork. The frequency then changes when the vibrating tuning fork contacts a liquid or solid. These changes are read by the sensor and converted into switching signals that trigger a high- or low-level alarm, display or control.