Re: PIC based Pt100 RTD temp sensor circuit

MarkMc wrote: 
Can anybody give me any hints ideas or circuits to allow me to read the
temperature from a Pt100 RTD probe in to a PIC microcontroller?

Regards,
Mark

The signal from an RTD is very small, so you need a low offset, low drift amplifier to bring the signal up to a range that is appropriate for the PIC A/D converter.

If you are determined to roll your own amplifier, I suggest you visit the various op amp manufacturers' sites and look for application noted for platinum RTDs.

For example:
http://pdfserv.maxim-ic.com/en/an/AN3450.pdf
http://www.national.com/nationaledge/dec04/article.html
.

Relevant Pages

  • Re: Future of Torchwood?
    ... Seems to me that RTD is breaking all his toys before he leaves. ... Torchwood is gone in its original form now. ... And I suspect Doctor Who will have a significant ending too. ... Regards ...
    (rec.arts.drwho)
  • Re: CiN special
    ... > between RTD and fan guesses I know which I'll go with until we get more ... Regards ... Prev by Date: ...
    (rec.arts.drwho.moderated)