mini-averaging datalogger Temp/RH

[Ken Shackel]

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Dear SOWACS,
	We are using plant-based measurements for irrigation scheduling (midday 
stem water potential), and because they are sensitive to local weather 
conditions (Temp/RH, actually VPD), we are are looking for a convienient 
Temperature/RH measurement system.  The ideal system would be contained in 
a lightweight standard gill housing (on a post or that could be hung on a 
tree branch), and would simply display a running average (since the last 
reset) for temperature and RH - no need for programming, a laptop to 
collect/display the data, and all those other things that usually go along 
with weather monitoring.  We have been using the "TH pen," which has 
adequate accuracy and range for us, but does not calculate an average, and 
takes more than a one-button approach to prevent it from auto-off (if the 
period is over 20 minutes).  Any suggestions?


Ken Shackel
Department of Pomology
University of California
One Shields Avenue
Davis, CA 95616-8683
Phone (530) 752-0928
Fax (530) 752-8502


[Ken
Sowacs is looking to include listings of this type of equipment in future,
but for now, please try the larger manufactureres of scientific equipment -
I'm sure several will contact you directly. Please send me a summary of
your findings to be included on sowacs.
Thanks
Bruce]