Anemometer Airflow meter adapter
thingiverse
New Version: https://www.thingiverse.com/thing:4324016 This custom adapter perfectly fits affordable anemometers, making it possible to measure volume flow with a cost-effective method for precise ventilation system regulation. I used a HoldPeak(R) HP-866B anemometer. If the adapter completely covers the vent, you can simply multiply the displayed wind speed in m/s by the following factors to get the volume flow in m³/h: Zuluft x 9.7, Abluft x 10.2.
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