Lubricant aeration

Air-X & Compact Air-X, the right tools to monitor lubricant aeration

  • The reference tool in the automotive industry for gas content measurement
  • Based on X-ray transmission: range from 0% to 100% gas content
  • Real-time results: response time selectable from 1 sec to 1 min
  • Continuous oil sampling, at regulated flow (selectable)
  • Allows measuring both dissolved and non-dissolved fractions
  • Accuracy: 0.1% in terms of gas content
  • Automatic temperature compensation
  • Easy to calibrate and user’s friendly interface
  • Visualisation of oil flow in the measuring chamber (video signal)
  • 4 versions available, from low to high flows
  • In-board model available
  • Single USB connection
DSI / Air-X Compact & Standard

Air-X_Standard & Compact_DSi


Air-X is able to sample and evaluate oil from atmospheric or pressurized lines in an operating hydraulic system. The sampling unit of Air-X includes an internal oil pump with accurate and variable flow control.



Air-X Compact offers the same performances as the standard version. It is dedicated to applications where space is limited, i.e. to perform on-line measurement on a vehicle, on a tilt test bench, etc.



DSi team has acquired a strong expertise in assisting our customers to understand and solve aeration problems.

Our services include:

  • Service measurement with Air-X equipment, at your company
  • Service measurement at DSi including rent of engine test tools
  • Solving aeration problems by adapting the oil circuit and lubricant properties
  • Training on the aeration process (theoretical and practice)
  • Design and manufacturing of dedicated test rigs for supply of aerated oil
  • Development of special configuration in the hydraulic and mechanical industries


Software Air-X : User’s InterfaceAll measurement data (oil temperature, oil pressure and gas content) are recorded and can be visualized on a graphic during operation of Air-X. A dedicated routine is also provided, which allows converting the results to a .csv format.

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3, rue Mont d’Orcq (Tournai-Ouest),
B-7503 Froyennes – BELGIUM

Tel: +32 69 640 604
Fax: +32 69 78 00 79

E-mail: [email protected]

DSi in China

SWHY contact information:

Tel: +86 10 6334 2252
Fax: +86 10 8320 7709
Website :

E-mail: [email protected]


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