'Solid State Anemometer [OT]'
> More information wanted.
> James Cameron us.netrek.org quozlhttp://quozl.us.netrek.org/
They are talking about what's called a "sonic" anemometer, where
you directly measure the airflow by putting an ultrasonic pulse out,
and measuring the difference between the "upstream" speed and
the "downstream" speed.
In practice, they use three or four transducers and do the trig on 6
or 8 rociprical paths to derive speed and direction. Its neat because
its solid state, but more complex (and expensive) than the simple
Handar, I think, makes a nice one. I can't find my copy of the spec
sheet right now ($^@!#%). Don't know if they are on the web, a
search should turn it up. Look for Ultrasonic anemometers.
Barry King, Engineering Manager
NRG Systems "Measuring the Wind's Energy"
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