No product quite so pungently underscores the importance of freshness. If
you want to give your customers a guarantee of quality in the products they
buy, you may need to track time and temperature, keys to the freshness of
many products. The new DS1921 Thermochron iButton� is a Web-addressable,
dedicated tracker that can go wherever thermally vulnerable products go,
monitoring time and temperature and storing the data that helps you
guarantee quality. The iButton easily attaches to containers of frozen or
fresh foods, blood products, and chemicals or drug reagents, recording time
and temperature during transport and storage. By logging the thermal
experience of temperature-sensitive material, you can pinpoint
responsibility for spoilage and take corrective action. The iButton's
embedded computer chip integrates a 1-Wire� transmitter/receiver, a globally
unique address, a thermometer, a clock/calendar, a thermal history log, and
512 bytes of additional memory to store a shipping manifest. The thermometer
measures temperature from -40�C to +85�C in 0.5� increments, while the clock
measures seconds to years accurately to +1 minute per month from 0�C to
45�C. The recyclable iButton logs data for more than 10 years or up to 1
million temperature measurements.
http://www.ibutton.com/ibuttons/thermochron.html#data
-----Original Message-----
From: Benjamin Scott [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, May 01, 2001 4:40 PM
To: Greater NH Linux Users' Group
Subject: Re: Temperature sensor?
On Tue, 1 May 2001, Ken Ambrose wrote:
> Hey, all -- I'm trying to find a way to figure out what the temperature in
> my data center is. Preferably, I'd like a device that could be queried
> via TCP, though serial would be acceptable. Any suggestions?
You could tape a thermometer to a flatbed scanner... or point a webcam at
a
wall thermometer... ;-)
On a more serious note, the APC Smart-UPS line has an expansion slot, into
which can be plugged various add-on cards. One such card monitors
environmental factors like temperature and humidity. Dunno how well it
works,
they just bombard me with ads.
A search on Google/Linux for "temperature sensor" seemed to yield quite a
lot of interesting-looking hits.
--
Ben Scott <[EMAIL PROTECTED]>
| The opinions expressed in this message are those of the author and do not
|
| necessarily represent the views or policy of any other person, entity or
|
| organization. All information is provided without warranty of any kind.
|
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