Only question might be cost (pretty darn big one in my opinion, though.) http://tinyurl.com/75hso
jofarr, soddy tn

----- Original Message ----- From: "Mark R Steitle" <mark.steitle@austin.utexas.edu>

One last possible solution then I'll shut up.  Have you considered using
one of the GEM ELS-1100HT (http://www.gems-sensors.co.uk/) sensors