Post by thread:Temperature sensors

>There is at least one incorrect of such a table on the >net. I don't remember which one right now, but when >compared to my spread sheet and other similar on-line >tables, there were minor errors. Possibly a chart data >entry or something. {slewrate} Are you sure that they are actually table entry errors, or are they actually different slopes/calibration points? It was not till after I had sent the mail, and was closing the browser window that I realised this table has 7 different Pt100 references in it, depending on the 100 ohm temperature (0C or 32F, it would be easy to select the F table instead of C), and the alpha value of the resistor. I gave just the first one (00385 Alpha) and it looks like this is probably the most common used. I had not realised that there are different Alpha values available. -- http://www.piclist.com hint: To leave the PICList spam_OUTpiclist-unsubscribe-requestTakeThisOuTmitvma.mit.edu>

----- Original Message ----- From: "Alan B. Pearce" <.....A.B.PearceKILLspam@spam@RL.AC.UK> To: <PICLISTKILLspamMITVMA.MIT.EDU> Sent: Monday, February 10, 2003 7:35 AM Subject: Re: Temperature sensors - PT100 > >There is at least one incorrect of such a table on the > >net. I don't remember which one right now, but when > >compared to my spread sheet and other similar on-line > >tables, there were minor errors. Possibly a chart data > >entry or something. {slewrate} > > Are you sure that they are actually table entry errors, or are they actually > different slopes/calibration points? It was not till after I had sent the > mail, and was closing the browser window that I realised this table has 7 > different Pt100 references in it, depending on the 100 ohm temperature (0C > or 32F, it would be easy to select the F table instead of C), and the alpha > value of the resistor. I gave just the first one (00385 Alpha) and it looks > like this is probably the most common used. I had not realised that there > are different Alpha values available. I'm sure! I think it was in a PDF. I don't have the time to re-search for incorrect data to prove it to you. If you don't believe me, that's ok! {slewrate} -- http://www.piclist.com hint: To leave the PICList .....piclist-unsubscribe-requestKILLspam.....mitvma.mit.edu>

>I'm sure! I think it was in a PDF. I don't have the >time to re-search for incorrect data to prove it to >you. If you don't believe me, that's ok! No problem, I'm sure you probably did find an error. I'm no stranger to making errors myself :))) I just figured that what I observed in the table after I sent the message may have been the reason. -- http://www.piclist.com hint: To leave the PICList EraseMEpiclist-unsubscribe-requestspam_OUTTakeThisOuTmitvma.mit.edu>