I asked this question over on the Society of American Archivists list
a while back and the Hobo series of dataloggers came up more than any
other by a wide margin.
I've had mixed experience with Omega products, especially in a
refrigerator-type environment. I killed a $300 Omega logger and also
a smaller one with USB port (the latter was replaced under warranty).
In both cases the non-replaceable humidity sensor failed.
The good folks at OnSet computing suggested that for refrigerators
and freezers I would really want to use their waterproof line.
I haven't purchased yet (good thing the Cdn$ is going up--later) but
it's about $350US to get your first logger including the pro software
and the interface, and then $140 per additional logger.
is a good page to start. Many of these have user-replaceable humidity
sensors. The interface is cool as it is optical so there are no
contacts on the logger and the battery, while pricey, lasts about 3
years. I think Omega sells the same battery for half the price of
OnSet, so buy your loggers from OnSet and your batteries from Omega <smile>.
The only problem is, I hear that you can't use them for railroad
applications as they may change trains in the freight yards. <ka-ching>!
At 02:13 PM 2007-06-20, Andy Lanset wrote:
>Thanks for you input on Laughing Records. I've got another
>Is there a temperature/humidity datalogger/monitor anyone can recommend with
>for their controlled storage area(s).
Richard L. Hess email: [log in to unmask]
Aurora, Ontario, Canada (905) 713 6733 1-877-TAPE-FIX
Detailed contact information: http://www.richardhess.com/tape/contact.htm
Quality tape transfers -- even from hard-to-play tapes.