Technology offer : Method for self-calibration of anemometers
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.
Ref : OT-00124
Area of activity : ENGINEERING SCIENCES
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