Technology offer : Method for self-calibration of anemometers

Technology's description

This innovation developed by IRSTEA (National Research Institute of Science & Technology for Environment & Agriculture) consists in a measurement process specifically designed to self-calibrate most of the existing anemometers.

The probe to be calibrated is introduced inside the flux to be measured and is moving on a linear axis, allowing the measurement of several parameters in a dynamic or static way. The differential speed of the probe is offering a self-calibration on a wide range, down to the lowest flow speeds (less than < 3 m/s). Depending on the sensor under consideration, this calibration procedure can run into a dynamic or a static mode, either with the probe translation, or the variation of the flux speed, or as well in a more classical static way.

This design offers unique performances : actually, on the top of the speed, several other flow parameters can be self-calibrated at once (temperature, orientation angle). This is made possible thanks to the measurement of a great number of points (statistic > 5000 Points), with taking into account the surrounding variations (temperature, pressure, ventilating drift). Besides, this technology has no limitation in the measurement range (speed & temperature) of the probes.

These new capabilities provide the measurements with an high accuracy as well as a high precision and this makes it a robust technology for the self-calibration of anemometers such as hot-wires, hot- bulbs, hot-films, pitot, ultrasonic, cups and so on.



Advantages

  • High performance sensors : precision & accuracy ; robustness ; limitless range ;
  • Adaptability : self-calibration for most of the probes and sensors ;
  • Productivity : decreased calibration time, increased availability; no activity or process disruption ;
  • Easy to use & implement :  simultaneous measurements (speed and flux orientation), independent of temperature variations ;
  • Autonomy : perspectives for portability & mobility (handheld) or in-situ (process control) ;
  • Research / R&D (hot-wire anemometers) : calibration speed (1 minute !) and directional probes (3 velocity components) in less than 10 minutes (no simplifying assumptions).
Ref : OT-00124

Area of activity : ENGINEERING SCIENCES

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Industrial applications

  • In-situ, on-site and mobile, any laminar-flow system (air or fluid), aeraulic networks, ventilation, air conditioning, dust-removal, particles-removal, fluid transport, air-drying, filtration. Industrial fluids, processing environments, wind energy, aero- dynamics (vehicles & aeronautics), turbines and so on. Research applications in fluid dynamics and aerodynamics.

Intellectual property

  • Patented

Technology transfer

  • Co-development with licensing agreement
  • Know-how
  • License

CONTACT


Lionel TROUILLEUX
Business developer

lionel.trouilleux@cvt-sud.fr
P: +33(0)4 91 99 94 43