--- Rich <rgrazia1@rochester.rr.com> wrote:

> What exactly do you want to do? I gather that you
> need a non-contact method 
> of temperature measurement 10C to 100C.  This is not
> a difficult range. What 
> is the critical distance?

The critical range is about 1 inch.

>     If you want to measure temperature optically it
> is a bit more 
> complicated than connecting an IR detector to a
> transimpedance amplifier. 

Ah! That would be a good thing to look into. I have
been digging in my school books but came out empty.
Any good theory on this?

> Do you intend to connect to an A/D and uP? What
> accuracy of full scale 
> measurement do you require?  If you wish to find a
> low cost optical 

I am quite happy with 10 bit resolution. Okay this is
what I intend to do. Place something VERY hot on a
plate where the IR would take it's measurement from.
Quicky measure it and move on to the next item to
measure. Just like cakes moving throught the conveyor.



Thanks,
John

> ----- Original Message ----- 
> From: "John Chung" <kravnus@yahoo.com>
> To: "Microcontroller discussion list - Public."
> <piclist@mit.edu>
> Sent: Wednesday, April 04, 2007 11:09 PM
> Subject: [PIC] infrared thermometer modules?
> 
> 
> > Can anyone recommend some IR modules? It should
> not
> > cost too much. USD 30.00 at max. Range of
> measurement
> > would be 10C to 300C.
> >
> > Thanks,
> > John
> >
> >
> >
> >
>
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