Awhile back I published a simple design idea for a thermal airspeed sensor based on a self-heated Darlington transistor pair. The resulting sensor is simple, sensitive, and solid-state, but suffers ...

A recent Design Idea presents a circuit to measure an airflow rate up to 2000 fpm using two transistors in a Darlington configuration. One transistor works as a self-heated thermal sensor and the ...

To measure wind speed and direction, most people turn the traditional cup anemometer and wind vane. Another less-known method is to use an array of ultrasonic transducers, which doesn’t need any ...

COMSTOCK PARK, Mich. — Meteorologists all over the world use a wide variety of instruments to measure things like temperature, air pressure, humidity and a host of other variables. In Tuesday's ...

Anemometer is the instrument we use to measure wind speed. Use the hole punch to make one hole in the side of four of the paper cups (all roughly in the same place) and four equally-spaced holes ...

The Traceable® hot wire anemometer-thermometer has two miniature glass-bead thermistors that provide greater precision at low air velocities. The telescope probe expands from 9-1/2 inches to 3 feet ...