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Vibrating Tuning Fork Level Sensor

Principles of Operation
A rod sensor or tuning fork level sensor is excited piezo-electrically and vibrates at its resonant frequency. The frequency changes when the fork enters/leaves the medium and this change is detected and converted into a switching command.

Advantages of Vibrating Tuning Fork Level Switches

• Reliable point level switching

• Set up without adjustment to medium

• High repeat accuracy

• Mounting possible in any position

• No moving parts

• Independent of medium characteristics

Limitations of Vibrating Tuning Fork Level Switches

• May be prone to material buildup between the tines causing inaccuracies

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