Debbulle P

Autonomous Bubbler Flowmeter

The bubbler flowmeter DEBBULLE is designed for level measurements and flow calculation in open channels, sewage treatment plants, wastewater networks...

The DEBBULLE has its own air generator, as well as an integrated tank and controller. Its anti-dust filter ensures an excellent stability of the bubbling over time.

The DEBBULLE offers an easy to use solution and accurate measurements.


The DEBBULLE flowmeter is mainly used for the following applications:

  • Diagnosis of wastewater networks and natural environments
  • Self-monitoring of wastewater treatment plants
  • Control and regulatory monitoring of urban and industrial wastewater discharges in open channels
  • Any other flow measurement in difficult environment (fouling, temperature gradient, foam...)
  • Installation on weirs, gauging channels...

Main benefits

  • Minimally influenced by environmental constraints (foams, debris, turbulence, silting...)
  • Measuring cell is not in contact with the liquid
  • Possibility to add another external sensor (optional 4-20 mA input)
  • Automatic sampler control
  • Fine control of bubbling for precise monitoring of the measurement, regardless of the variation in level
  • Limnimeter and flowmeter/counter functions
  • Integrated hydraulic level to flow rating tables
  • Can be used without software, via the integrated screen and keyboard, or via Web browser
  • Can be used as a fixed station (powered) and stand-alone portable station (battery-powered)



  • Hydrostatic bubble pressure sensor
  • Measuring range: 0-1 m, 0-5 m or 0-10 m
  • Accuracy: 0.1% of full scale, temperature compensated
  • Resolution: 0.1 mm
  • Programmable manual and automatic purge for self-cleaning (every 1h, 6h, 12h, 24h, 7 days)
  • Maximum tube length: 50 m
  • Tracking speed (on 2 m column):
    — 14 cm/min in 10 m of 4/6 mm tube
    — 8 cm/min in 30 m of 4/6 mm tube
  • Additional inputs and outputs:
    — 1 analog input 4-20 mA (physico-chemical sensors, other level sensor...)
    — 2 relay outputs (sampler control, alarms, etc.)


  • Internal data logger: 100.000 measurements (level, flow, volume)
  • Configurable recording frequency (1 sec to 24 h)
  • 60 storable formulas or conversion tables


  • RJ45 Ethernet port for programming and data visualization through a Web browser
  • USB key port (data collection, import and export of configurations)


  • 4.3'' backlit graphic LCD display and integrated keypad
  • Materials: Polypropylene Copolymer (PPC) case
  • Operating / storage temperature: -20°C to +60°C/-30°C to +70°C
  • IP65 sealing level
  • Dimensions (W x H x D): 300 x 210 x 270 mm. Weight 6 kg (with battery)


  • Internal battery 12VDC/7Ah, autonomy of 1 week with measurements every 5 minutes
  • External power supply available (12 VDC)

Related products

  • Optional telescopic pressure rods (50 to 100 cm)
  • Overflow shutters, flumes... (please contact us)
  • External sensors, samplers...
  • Output connection cables with waterproof connectors


Debbulle P