Vibrating tuning fork switches for opening or closing electrical contacts at a preset fluid level.
Vibrating tuning fork fluid level switches are threshold contact trip devices which typically consist of a tuning fork which extends out from the switch housing.
In operation a piezoelectric oscillator is used to vibrate the tuning fork at its natural frequency for air.
A second piezoelectric device is used to pick-up the frequency of the vibrating tuning fork. When the fluid level rises and covers the tuning fork it will vibrate at a lower frequency.
This change in vibration frequency is used to detect when the required fluid level has been reached.
Related Help Pages
Browse other help pages associated with the same topic group as this Vibrating Tuning Fork Fluid Level Detection page.
- Using Hydrostatic Pressure Transducers for Measuring Fluid Level
- Measuring liquid level in a sealed tank with a hydrostatic pressure sensor
- Determining the hydrostatic pressure range for a tank level sensor
- Determining water tank volume using hydrostatic pressure
- Measuring the volume of liquid in a horizontal cylinder tank
- Hydrostatic Liquid Level Sensors
- Liquid Level Sensors
- How to determine milk tank level and volume from pressure
- Are all IP68 Water Resistant Protection Ratings the same
- Specific Gravity
- Hydrostatic Pressure
- mmH2O – Millimetres of Water Column at 4 deg C Pressure Unit
- mH2O – Metres of Water Gauge at 4 deg C Pressure Unit
- ftH2O – Feet of Water Column at 4 deg C Pressure Unit
- Using a screw-in or waterproof pressure transmitter to measure liquid level
- Difference between vented and non-vented water level measurement
- cmH2O – Centimetres of Water Column at 4 deg C Pressure Unit
- Using absolute pressure sensors to measure hydrostatic level
- Improve the electrical termination of vented submersible pressure sensors
- How does changes in Local Gravity affect Hydrostatic Pressure
- Considerations for monitoring Landfill Water Level
- Why are Submersible applications so demanding of Pressure Transducers?
- Converting non-vented depth readings & barometric pressure to true depth
- Liquid Level Measurement
- How do you measure the volume of a liquid using pressure
- Liquid Level Switches
- Float Fluid Level Detection
- Conductive Fluid Level Detection
- Capacitive Fluid Level Measurement
- Determining the Signal Cable Length of a Suspended Liquid Level Transducer
Sensor Technology Related Terms
More pages related to sensor technology technical terms.
- BFSG – Bonded Foil Strain Gauge
- Bourdon Tube
- Capacitive Fluid Level Measurement
- Ceramic Pressure Sensors
- Conductive Fluid Level Detection
- Doppler Effect Flow Measurement
- Float Fluid Level Detection
- LVDT – Linear Variable Differential Transformer
- Paddle Wheel Sensor
- Piezoresistive Strain Gauges
- Positive Displacement Flow Measurement
- Radar Distance Sensing
- SOI – Silicon on Insulator
- Strain Gauge
- Thin Film
- Transit Time Flow Measurement
- Turbine Rotor Sensor
- Ultrasonic Distance Sensing
- Ultrasonic Flow Velocity Sensors
- Vortex Flow Measurement
- Wheatstone Bridge Strain Gauge