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From: commgrp@silver.ucs.indiana.edu (BACS Data Communications Group)
Newsgroups: sci.electronics
Subject: Ultrasonic anemometer
Message-ID: <60770@iuvax.cs.indiana.edu>
Date: 28 Sep 90 18:16:45 GMT
Sender: daemon@iuvax.cs.indiana.edu
Lines: 18


Someone gave me an interesting article:

   An Inexpensive Sonic Anemometer for Eddy Correlation
   by G. S. Campbell and M.H. Unsworth
   _Journal of Applied Meteorology_ v. 18, August 1979.

It uses inexpensive ultrasonic transducers and PLL circuitry.  It has 
no moving parts, detects very low velocities, is directional, low-
powered, and can be built from about $20 worth of Radio Sh*ck parts. 
It also has a temperature output.  I plan to build one for cave-wind 
and other infrasonic studies.  Copy for SASE.

--

Frank Reid      W9MKV         reid@ucs.indiana.edu
P.O. Box 5283
Bloomington, IN 47407