With instrument and connecting cables at room temperature, likely more than close enough to a "zone box". I suggest the thermocouple bead attachment method along with choice of bead placement likely far greater source of error that all other variables combined. I think industry in general obsesses over insulation temperature, since degradation of that material properties over time/temperature is surly an in-exact science. _______________________________________ _____________________________________________
Ralph McDiarmid | Schneider Electric | Renewable Energies Business | CANADA | Regulatory Compliance Engineering From: Brian Oconnell <oconne...@tamuracorp.com> To: EMC-PSTC@LISTSERV.IEEE.ORG List-Post: emc-pstc@listserv.ieee.org Date: 10/25/2011 12:26 PM Subject: [PSES] thermocouple tutorial ________________________________ Just found this in the archives of Electronics Cooling Journal. In some ways it is better tutorial than mine, but the 1% thermocouple accuracy can be improved due to modern instruments. Do not agree with the ambient temperature measurement technique due to the non-laminar nature of air flow. Have never used a 'zone box' - anyone else used this technique? <www.electronics-cooling.com/1997/01/notes-on-using-thermocouples/> Brian - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <emc-p...@ieee.org> All emc-pstc postings are archived and searchable on the web at: http://product-compliance.oc.ieee.org/ http://product-compliance.oc.ieee.org/> Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ <http://www.ieee-pses.org/> Instructions: http://listserv.ieee.org/request/user-guide.html <http://listserv.ieee.org/request/user-guide.html> List rules: http://www.ieee-pses.org/listrules.html <http://www.ieee-pses.org/listrules.html> For help, send mail to the list administrators: Scott Douglas <emcp...@radiusnorth.net> Mike Cantwell <mcantw...@ieee.org> For policy questions, send mail to: Jim Bacher: <j.bac...@ieee.org> David Heald: <dhe...@gmail.com> ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. ______________________________________________________________________ - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <emc-p...@ieee.org> All emc-pstc postings are archived and searchable on the web at http://product-compliance.oc.ieee.org/ Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <emcp...@radiusnorth.net> Mike Cantwell <mcantw...@ieee.org> For policy questions, send mail to: Jim Bacher <j.bac...@ieee.org> David Heald <dhe...@gmail.com>
