RTD or thermocouple?

[Andrew Theurer]

Thanks for all the responses.  It looks like Thermometrics does have a RTD 
for up to 1000C.   I don't know what the reponse time is.  Basically, I want 
sometihng that will warn me before damage is done, and a sensor which will 
not melt under extreme heat condiftions.  I have heard of an "enchanced" RTD 
datalogger for exhaust, but I don't know all the details yet.  A person who 
has it discovered quickly that the thermocouple he had (installed in addition 
to the RTD) reported temps poorly compared to the RTD.  The temps reported by 
the thermocouple were off (too cold) and lagged behind a few seconds.  I'll 
try to find out more info about it.  

-Andrew

On Tuesday 09 October 2001 08:14 pm, you wrote:
> I believe a company called Thermometrics makes an RTD
> capable of EGT measurements.  It's been a while since
> I saw the info so I am not certain about the company
> name.  I am certain that someone makes an RTD for EGT
> measurements.
>
> I did not pursue the idea further because it was more
> cost effective for me to make my own thermocouple
> signal conditioner using the Analog Devices AD595
> chip.
>
> Mark Agnello
>
> --- Jeffrey Engel <jengeltx at yahoo.com> wrote:
> > Andrew,
> >
> > I don't think that RTD's could withstand the
> > temperatures involved.  If anyone knows differently,
> > I'd love to hear about it.
> >
> > HTH
> >
> > Jeffrey Engel
> >
> > --- Andrew Theurer <habanero at us.ibm.com> wrote:
> > > I have heard that a RTD has
> > > been used, but I have not found a source for one.
> > > Does anyone know of a
> > > source where I can get an RTD with a "black box"
> >
> > to
> >
> > > output 0-5v based on
> > > temps?  Or should I just stick with a
> >
> > thermocouple?
> >
> >
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