Hello,
Wind speed usually in meters/sec (when used for scientific data) or km/h
(used in the news, so the people can compare with car speed ;) )
Pressure in millibars. Meteorologist also usually refers to
hectopascals, but it is more for representing something at a given
altitude (for example, winds at 700hPa) than for managing pressure data.
Temperature in ºC
Precipitation in liters/squared meter or millimeters (it is a 1:1
equivalence)
Best regards,
Javier
On 24/05/2014 3:16, Mark Sims 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/?).
_______________________________________________
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
_______________________________________________
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
