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Vibrating Tuning Fork Fluid Level Detection

Vibrating Tuning Fork Fluid Level DetectionVibrating 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.

Featured liquid level measurement products

  • IMCL Low Cost Submersible Pressure Sensor
  • DS200 Combined Hydrostatic Level Switch, Gauge and Sensor
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Glossary of Liquid Level technical terms

  • Capacitive Fluid Level Measurement
  • cmH2O – Centimetres of Water Column at 4 deg C Pressure Unit
  • Conductive Fluid Level Detection
  • Float Fluid Level Detection
  • ftH2O – Feet of Water Column at 4 deg C Pressure Unit
  • Hydrostatic Pressure
  • mH2O – Metres of Water Gauge at 4 deg C Pressure Unit
  • mmH2O – Millimetres of Water Column at 4 deg C Pressure Unit
  • Specific Gravity

Help from Liquid Level resources

  • Measuring liquid level in a sealed tank with a hydrostatic pressure sensor
  • Measuring the volume of liquid in a horizontal cylinder tank
  • Determining water tank volume using hydrostatic pressure
  • How do you measure the volume of a liquid using pressure
  • Calculating required pressure range for fuel tank level measurement
  • Measuring liquid level in a tank using a dp sensor

Guidance with Liquid Level requirements

  • Hydrostatic Pressure
  • Hydrostatic Liquid Level Sensors
  • Liquid Level Sensors

Tools for Liquid Level calculations

  • Fluid Depth, Density, Gravity, and Pressure Calculator

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