Reading RTD''s
Archiver
Posts: 46,084
With either RTD or TC's you will need to shield the cable.
If you are running a significant length of wire I would recommend
shielded twisted pair, That will help the noise levels.
With an RTD you will HAVE to run a 4 to 20 converter or your
temperature will be way off due to the resistance of the wire (
unless you are running 4 wire!)
But really for just 100c arn't there semicondutor sensors?
Either that, put the stamp close to the oven and send the signal
digitally, via rs-422 to your computer or whatever (RS232, or
straight serial will get noisy too remember, and a lot harder to
troubleshoot)
--- 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.
If you are running a significant length of wire I would recommend
shielded twisted pair, That will help the noise levels.
With an RTD you will HAVE to run a 4 to 20 converter or your
temperature will be way off due to the resistance of the wire (
unless you are running 4 wire!)
But really for just 100c arn't there semicondutor sensors?
Either that, put the stamp close to the oven and send the signal
digitally, via rs-422 to your computer or whatever (RS232, or
straight serial will get noisy too remember, and a lot harder to
troubleshoot)
--- 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.