Here in the US, most people who really care about wind speed think knots. For causal use to the general public them it's MPH.
If you want to be esoteric use the "Beaufort Wind Scale" It is actually still used because it can be estimated from looking at the water. It is easy to learn to tell a 2, 3 ,4 just by looking On Fri, May 23, 2014 at 9:21 PM, David J Taylor <[email protected]> wrote: > I am building a weather sensor that includes a ultrasonic anemometer to > measure wind speed, direction, and air temperature. It uses 4 cheap ($1 > each) HC-SR04 ultrasonic rangefinder modules that output a pulse width > proportional to the time of flight of the sound signal (topic is time nut > related since it simultaneously measures the speed of sound in 4 directions > to a pretty good accuracy/resolution using a cheap-ass microprocessor - > ATMEGA328 (like and Arduino)... and does so without using any counter-timer > channels). > Now the question... I would like it to be able to output data in imperial > or metric units. In what units is the typical wind speed reported > (meters/sec, km/hour, ?). Also air pressure > (millibars/hectopascals/pascals/?). > ============================================== > > Mark, > > m/s and hPa are often used, but not exclusively. > > Cheers, > David > -- > SatSignal Software - Quality software written to your requirements > Web: http://www.satsignal.eu > Email: [email protected] > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. -- Chris Albertson Redondo Beach, California _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
