Measuring air flow in an HVAC duct can be a tricky business. Paddle wheel and turbine flow meters introduce not only resistance but maintenance issue due to accumulated dust and debris.
Pinwheels are pretty optimized from a design standpoint, and are so cheap and easy to build that putting a pinwheel to work as an HVAC duct flow meter seems ... experiments in air duct flow ...
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The ST50 Thermal Mass Flow Meter from FCI delivers accurate air flow measurement to optimize their treatment processes and ...
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