Pro-Oceanus: Mini CO2 Submersible pCO2 Sensor

The most flexible instrument for dissolved CO2 measurements. Ideally suited for high-variability environments.

The Mini CO2 instrument uses infrared detection to measure the partial pressure of CO2 gas dissolved in liquids. With pCO2 ranges from 0-1000 ppm up to 0-100%, the Mini CO2 provides the versatility needed for any application.

Mini CO2 submersible instruments are compact, lightweight, plug and play sensors. The instrument also measures total dissolved gas pressure (TDGP), a useful parameter for many applications and data correction.

With housing options rated to 6000 dbar of hydrostatic pressure, and resistance to most corrosive liquids, the Mini CO2 can provide reliable dissolved carbon dioxide data for many applications. Flow-through and in-line adapters are also available for simple and effective industrial solutions.

For specialized applications, Pro-Oceanus can provide custom solutions to suit any need.


  • – Low power consumption
  • – Compact size
  • – Optional internal or external battery power
  • – Easy integration
  • – Large selection of concentration ranges
  • – Digital option comes with internal data logger and controller with 2GB flash memory

pCO2 Sensor Applications

  • – Aquaculture monitoring of dissolved CO2 for fish and shellfish health
  • – Coastal zone CO2 fluxes
  • – Algae to fuel bioreactor feedback control
  • – Groundwater and wellwater monitoring
  • – Carbon budget studies for lakes and rivers
  • – Carbon capture storage monitoring of aquifer and surface water levels of pCO2
  • – Wastewater greenhouse gas emissions
  • – Ocean glider and profiler missions


Sensor Performance
CO2 Measurement Ranges0-2000 ppm CO2; by volume
0-5000 ppm
0-1% (10,000 ppm)
*other ranges available
Total Dissolved Gas Pressure0-2000 mbar
Accuracy: pCO2± 2% of max range
TDGP± 1%
Equilibration rate (t63)3 minutes
Resolution0.1% of max range
Length28 cm (11 in)
Diameter5.3 cm (2.1 in)
WeightAir 0.53 kg (1.2 lbs)
Water: -0.06 kg (-0.1 lbs)
Housing MaterialAcetal Plastic / Titanium
Depth Rating0 – 600 m (Plastic)
Up to 0 – 6000 m (Titanium)
Water Temperature-2º to 40º C
Input voltagedigital: 6-24 VDC
analog: 12-24 VDC
Power consumption0.45 W (35 mA @ 12 V)
Data outputdigital: RS-232, ASCII format
analog: 0-5 V or 4-20 mA
Sample rate2 seconds (variable rate with logger/controller)

Telemetry2U Compatible

Telemetry2U lets you monitor your sensors, control devices and automate tasks – all through one simple, secure, and configurable IoT platform. Pro-Oceanus products are compatible with their technology, allowing for:

  • – Real-time data access on any device
  • – Alerts and alarms for parameters you define
  • –  Comprehensive reporting and historic data visualizations available on customizable dashboards

Servicing, Calibration and Support

Imbros’ local engineering department can service, repair and calibrate your instrument without expensive shipping costs or wait times.


More information from Pro-Oceanus Download Datasheet

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