GTD-Pro Dissolved Gases Sensor

The GTD-Pro is said to be the most accurate and stable dissolved gas sensor ever developed. The GTD-Pro measures the sum of the partial pressures of dissolved gases in water, with accuracy of better than 0.02% per year, and precision of microbars. It uses a small sample volume that equilibrates with dissolved gases through a semi-permeable membrane. Measuring the pressure of the equilibrated gases gives the gas tension (the sum of the partial pressures or, more accurately, fugacities of all dissolved gases).

The GTD-Pro Standard was the first instrument designed by Pro-Oceanus Systems and is designed for use in laboratories, on moorings and aboard ships in underway mode.

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