CO2-Pro FT™

  • Measures the total dissolved gas pressure in liquids.
  • Provides accurate TDGP data, designed for use in aquaculture, dam spillways, groundwater monitoring, and industrial applications.
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The CO2-Pro FT instrument measures the partial pressure of CO2 gas dissolved in water using infrared detection. Standard ranges from 0-600 ppm up to 0-10,000 ppm provide the full spectrum of pCO2 needed for accurate measurement of water CO2 levels.

Labelled FT for Flow-Through version of our flagship CO2-Pro instrument, the Pro-FT can be used wherever a supply of flowing sample water is available, including shipboard flow-through systems as well as laboratory testing.

The small size of the CO2-Pro FT makes it versatile and easy to integrate into larger systems where space is a concern. When combined with our anti-fouling features and options, the instrument can perform in even the most biologically active waters for extended periods of time. An internal zeroing feature provides a stable long-term baseline to ensure accurate measurements. A flow-through adapter is also available for simple integration into many systems.

The CO2-Pro FT is factory calibrated using WMO traceable standard gases. In addition, detector temperature stabilization and measurement of gas steam pressure and humidity provide an accurate and stable measurement of pCO2 in water.


  • Fast Response and High accuracy
  • Long-term stable data for deployments of a year or longer
  • Resistant to biofouling
  • Real-time data output
  • Large selection of concentration ranges
  • Compact benchtop design

Physical Dimensions

  • Length: 30 cm
  • Diameter: 10 cm
  • Weight: 2.7 kg
  • Housing: Plastic or Aluminum
  • Titanium housings and battery packs available

All of our instruments are covered by a ONE-YEAR LIMITED WARRANTY

Download Data Sheet




  • 0.5%

Zero drift: Automatic Zero Compensation

Equilibration time (t63): 50 seconds
(with water pump)

Measurement range: 0–600 ppm
(alternate ranges available)

Temperature Ranges:
Standard: 0 to 30ºC

Arctic version: -2 to 20ºC

Tropical version: 15 to 40ºC


Input voltage: 12-18 V DC

Power consumption:

  • 0.25 A (includes water pump)
  • 0.85 A during warmup

Data storage: 2GB Available with logger/controller option

Data output: RS-232 serial output, ASCII format (other outputs available)

Sample rate: 1.6 seconds (user selectable with datalogger / controller)