[Nubmian] set the transducers up in a PVC pipe and blew air into it with a fan ... ground did the trick. For more HVAC projects check out this pinwheel flow meter and [Adam]’s piece on HVAC ...

His experiments in air duct flow measurements ... Looking for an outdoor anemometer rather than an HVAC flow meter? We’ve got one made from an old electric motor, or a crazy-accurate ultrasonic ...

Proper airflow flow is key to optimizing ... Central to HVAC systems, pressure sensors measure differential pressure—the ...