The PneumoDip, dip tube or Bubble Tube is a simple liquid level sensor. Also known as a Bubble tube or dip tube, the PneumoDip from SB is useful in situations where accurate level control is required and space in the tank or sump is very limited.
An air supply at very low flow pressure is fed down the tube. As the end of the tube is covered with the liquid a back pressure is created. This is sensed by the PneumoDip control system, which will then generate an output to trigger or other events such as an alarm or pump start/stop signal.