[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 ...

A variable air volume box controls the air flow to a given space. When the space is unoccupied ... A signal is then sent to the cooling and heating pumps to slow down and reduce consumption. This ...

Allengra showcased its innovative ALSONIC flow sensor family at the AHR Expo 2025 in Orlando, Florida. These ultrasonic-based ...