Search the CONFOCAL archive at
http://listserv.acsu.buffalo.edu/cgi-bin/wa?S1=confocal

You might want to consider a data logger.  I have used thermochron
sensors, also known as ibuttons to measure core body temperature in
rodents.  But they are designed for use as monitoring devices.  You can
sterilize them, and you just set the button in the incubator and collect
the data whenever you need it.  Very flexible system, and it is super
cheap, as low as $5 a sensor and $30 some for the usb adaptor. They also
have wired solutions I believe.  I don't know about CO2 but they can
also keep track of humidity. 


Check out the websites:

http://www.maxim-ic.com/products/ibutton/ibuttons/thermochron.cfm

and

http://www.maxim-ic.com/products/ibutton/


-----Original Message-----
From: Confocal Microscopy List [mailto:[log in to unmask]] On
Behalf Of Csucs Gabor
Sent: Tuesday, February 19, 2008 5:29 PM
To: [log in to unmask]
Subject: Temperature and CO2 sensors with USB connection

Search the CONFOCAL archive at
http://listserv.acsu.buffalo.edu/cgi-bin/wa?S1=confocal

Dear All,

Again a non-confocal question: In order to check the functionality of 
our incubator boxes we would like to purchase temperature and CO2 
sensors which can be connected to a computer via USB (to perform 
long-term measurements). Does anyone has experience (suggestions) with 
such sensors?
>
Thanks     Gabor

-- 
Gabor Csucs 
Light Microscopy Centre, ETH Zurich
Schafmattstrasse 18, HPM F16 
CH-8093, Zurich, Switzerland

Web: www.lmc.ethz.ch
Phone: +41 44 633 6221
Fax: +41 44 632 1298
e-mail: [log in to unmask]