On 1/17/08, Spehro Pefhany <speff@interlog.com> wrote:
> Quoting Vasile Surducan <piclist9@gmail.com>:
>
> > On 1/17/08, Stephen R Phillips <cyberman_phillips@yahoo.com> wrote:
> >>
> >> --- alan smith <micro_eng2@yahoo.com> wrote:
> >>
> >> > Decided not to hijack the threads...start a new one.
> >> >
> >> >   So this new client of mine, dealing with RTD's....are they just so
> >> > much more accurate than any other type of temp sensors?  He wants to
> >> > read once a minute.  Then make sure it didnt hit a threshold, and if
> >> > it does, turn on an alarm.  Its not a temperature controlled process
> >> > or anything like that, just simply making sure its staying within
> >> > limits.  Industry standard is to use RTD's but I'm just curious if
> >> > there isnt anything just "as good" ?
> >> >
> >> RTD sensors are very linear over a large range they are also very
> >> accurate.  Typically it's -100C to 1200C operating with a 0.010C
> >> accuracy.
> >
> >
> >   Are you talking about RTD or about thermocouple ?
> > Could you point on a web site where I can found RTD working at 1200C ?
> >
> > Thx,
> > VAsile
>
> While we're asking.. the 0.01 =B0C *accuracy* spec is also interesting..
> while I do know of such beasts, they have a narrow operating range and
> tend to cost around as much as a small automobile.


Well, things are clear for me. Only who never measured a temperature
can talk about
milicelcius or milikelvin accuracy while the max scale is 1000C....

:)
best regards,

-- =

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