All thermal anemometers work by inferring air speed from measurements of thermal impedance (Z) between a heated sensor and the surrounding air: An example of the constant power type can be found in ...

Anemometers are an important category of environmental sensor. Articles about their design, data capture, and linearization have comprised topics featured in EDN Design Ideas, several quite recently.

The Nano-Air-Flow Differential Pressure Sensors incorporate a thermal anemometer element and CMOS analog conditioning circuitry with a micro-flow channel having very high flow impedance. The result is ...