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'[OT] Medium temperature sensor'
1998\10\26@185734 by James Cameron

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Related question ... I just want to know what to use to measure a
domestic cooking oven ... that's a mere 300C maximum.  The DS1820 tends
to melt, I think.

I'd like to more accurately regulate the temperature.

--
James Cameron                                    (spam_OUTcameronTakeThisOuTspamstl.dec.com)
Digital Equipment Corporation (Australia) Pty. Ltd. A.C.N. 000 446 800

1998\10\26@211248 by Reginald Neale

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James asked:

>Related question ... I just want to know what to use to measure a
>domestic cooking oven ... that's a mere 300C maximum.  The DS1820 tends
>to melt, I think.
>
>I'd like to more accurately regulate the temperature.
>
 A Platinum RTD might be a good choice. You need an op-amp to bring the signal
 up to a useable level. But you can get inexpensive ones (< $10) and they are
 quite stable.

 Reg Neale

1998\10\27@113114 by Peter L. Peres

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On Tue, 27 Oct 1998, James Cameron wrote:

> Related question ... I just want to know what to use to measure a
> domestic cooking oven ... that's a mere 300C maximum.  The DS1820 tends
> to melt, I think.
>
> I'd like to more accurately regulate the temperature.

Thermocouple again...

Peter

1998\10\27@120158 by Sarunas Cepulis

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Peter L. Peres wrote:
>
> On Tue, 27 Oct 1998, James Cameron wrote:
>
> > Related question ... I just want to know what to use to measure a
> > domestic cooking oven ... that's a mere 300C maximum.  The DS1820 tends
> > to melt, I think.
> >
> > I'd like to more accurately regulate the temperature.
>
> Thermocouple again...
>
> Peter
Hi,
Thermocouple is not good for this temperature range :
1. Small output
2. Need cold side compensation.

I sugested Platinum RTD.
PT-100 or PT-500. Ju need only drive it with current
source and measure voltage on it.
These devices at +266 oC doubles his resistance.
PT-100 is 100oM at 0 oC , PT-500 - 500oM at 0 oC.

B.R.,
       Saras.

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