They work by measuring the time ... the receiver across a known distance. Wind direction can be calculated by taking velocity readings from two ultrasonic sensor pairs perpendicular to each ...

[Nubmian] wrote in to share his experiments with measuring airflow in an HVAC ... [Nubmian] created a rig using a pair of typical ultrasonic distance sensors. He detached the two transducers ...

These sensors are used for tank level measurement, remote monitoring, distance ranging, object detection, and agricultural applications. Image Credit: BinMaster The TS-100 series of ultrasonic ...