Introducing Portable Bubbler Tube System for Liquid Level Monitoring

Airwell Group has designed a portable bubbler tube monitoring system which can be used to take liquid level readings in ground water wells, sumps and ponds to a maximum of 200m of submergence. This equipment allows the user to take liquid level readings without the need for expensive pressure transducer equipment while still providing accurate results.

The monitoring system is made up of a high accuracy WIKA precision digital pressure gauge mounted inside a rigid pelican case. The system then connects via Nitto quick connect fitting onto your compressed air source, this can be a 4wd compressor, existing air supply or even a compressed air cylinder. The other end of the system connects onto your installed bubbler tube down the well; Airwell normally use a small diameter poly pipe but any form of pipe or tubing down the well can be used. 

By opening the Swagelok needle valve compressed air is able to pass through the gauge and down to the bottom of the well. The pressure required to push the air out of the bubbler tube is a direct reflection of the fluid level in the well. The digital gauge will then give a read out in metres accurate to within 0.05%

The advantages of the bubbler tube setup are:

  • No need for expensive pressure transducers
  • Bubbler Tubes work in all types of fluid applications
  • Monitoring gauge is accurate to within 0.05%
  • Bubbler tube readings are easy to take and record
  • Use of compressed air means no need for electrical power to well sites
  • 1 system can be used to monitor multiple wells on multiple sites if required.

This method of liquid level monitoring is also highly suited to being permanently installed at a site to provide constant monitoring if required. With the addition of SCADA Telemetry to the system, allows for remote monitoring and logging of the liquid levels from multiple sites and reported to a central location.








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