I also use a "tak-pak:" a cyanoacrylate and an accelerant. I've found that using the smallest amount of adhesive to do the job works best (limits thermal mass of adhesive) making consideration of the adhesive's thermal transparency moot.
The problem with any thermal insulator is that you trap heat that would otherwise convect or radiate away from the point of interest, possibly creating undesirable thermal gradients that may degrade a component's performance or even crack an encapsulant or case. Though not always possible, careful placement of the thermocouple can quite often mitigate air flow over the bead effecting the sensed temperature. Momentary removal of air flow can serve as a cross-check, if there is a concern; the interruption would have to be very short term, to avoid building up of heat in the sensed part. Regards, Peter L. Tarver, PE Product Safety Manager Sanmina-SCI Homologation Services San Jose, CA peter.tar...@sanmina-sci.com > -----Original Message----- > From: Barker, Neil > Sent: Wednesday, April 23, 2003 1:17 AM > > I am told that Blu-Tak (you know, that non-sticky > sticky stuff used to stick > up posters etc) works very well over a fairly > wide range of temperatures > without marking the product. It is also quite a > good thermal insulator, > which makes sure that the thermocouple sees the > test item rather than the > air temperature. > > Best regards, > > Neil R. Barker This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org Archive is being moved, we will announce when it is back on-line. All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
