Hi Tracy,

We just did exactly that. We replaced our old and in-need-of-calibration
hygros with digital versions(HOBO U10s). They work very well, the software
is easy to use, and they do not need calibration. I do keep my old hygros
out for display purposes, but I do not worry about keeping the graphs, if I
even have them turned on. Lots of visitors see them and wonder about them,
giving us a good opportunity to explain that element of environmental
control. The new digital versions are largely invisible(dependent upon
placement). Most people think they are thermostats.

Good luck.

Mark Janzen
Registrar/Collections Manager
Edwin A. Ulrich Museum of Art
Martin H. Bush Outdoor Sculpture Collection
Wichita State University
(316)978-5850


I don't know if this question has been posed before and I am sorry if this
is a repeat.  I was wondering if anyone uses digital data loggers as
opposed to pen/drum hygrothermographs.  My museum is looking into possible
changing out the old hygrothermographs for something a little easier to
manage and calibrate but can also keep day to day records.  Does anyone
have any opinions and/or suggestions?

Tracy
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