Prior to my recent acquisition of a Davis VP2, I was going to try to make some absolutely top drawer 1-wire implementations using these little jewels. Like everything else these days, their prices have gone up since I first saw them, and they are kind of expensive now. However, for those of us who obsess over obtaining lab quality data, some dandy 1-wire instruments could be made using them. Davis doesn’t even have a Photosynthetic Photon Flux sensor.
Anyway, I have way too much on my plate right now to mess with these, and I’ll probably just go with what Davis offers. With all the recent discussion on solar sensors, I thought I ought to post this reference in case somebody else wants to have at them.
Pyranometer Sensor (solar radiation in W/m2)
http://www.apogee-inst.com/pyr_spec.htm
Quantum Sensor measuring Photosynthetic Photon flux:
http://www.apogee-inst.com/qso_spec.htm
UV Sensor in umols / m2s:
(formerly these were not rated for outdoor use, but the current ones are)
http://www.apogee-inst.com/uv_specsheets.htm
Enjoy;
Steve