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Reading RTD''s — Parallax Forums

Reading RTD''s

ArchiverArchiver Posts: 46,084
edited 2003-01-25 17:53 in General Discussion
Phil,

I have looked into this exact same thing before but the project never
did take hold. If you are using a thermocouple or rtd, your best
best would be to hook it up to a 4-20ma transmitter. They make these
for either thermocouples or rtd's. When picking out the transmitter,
you basically need to know what temperature range it will be
operating in and what type of thermocouple you have (E, J, K, T).
Take a look at http://www.minco.com/site/transmitter.php. They sell
hundreds of transmitters exactly for this application. Only problem
you will find is the price. They can easily run $100 or more. If
you wanna save some money you can build one yourself. Search around
the web a bit and you should come up with some schematics. If you
don't come up with anything, leave me a message back on the list and
I will dig up the circuits and info that I have.

Ron

--- In basicstamps@yahoogroups.com, "Phillip Kocmoud" <pkocmoud@h...>
wrote:
> Can anyone kick me in the right direction? I am interested in
monitoring the
> temperature of an industrial oven. The monitored temperature is
between 0
> degrees Celsius and 100 degrees Celsius. I have attempted to use
> thermocouples, but the distance of the run and its location is very
close to
> a major airport, I cannot dampen the interference. I think RTD's
will fill
> my bill, but I am unable to find practical information for
integrating them.
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