Not to hijack this thread, but what is the best way to hold a thermocouple in place and get the best most accurate readings?
Is there a special cement or glue to glue the tip right to what you are trying to measure? We try to secure the thermocouple back from the tip and use thermo paste on the tip but this is very messy. I’ve seen some labs use plane old super glue to glue the tip down and then use acetone to soften it up for removal. Is this a common practice or is there a better way or some official way to do this? The Other Brian ________________________________ From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of Ronald R. Wellman Sent: Tuesday, June 16, 2009 8:33 AM To: 'American Idle'; rpick...@rpqconsulting.com Cc: peterh...@aol.com; emc-p...@ieee.org Subject: RE: Thermocouple welder You will not get away with twisting and smacking the leads if you are under IECEE SMT. You have to weld them. Also, my lab uses lots of TCs and we reuse them so you may have to re-weld them after each use because whatever cement you use to apply the TCs can very well cause you to rip the end of the TC when you remove it. Best regards, Ron Wellman From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of American Idle Sent: Monday, June 15, 2009 7:41 PM To: rpick...@rpqconsulting.com Cc: peterh...@aol.com; emc-p...@ieee.org Subject: Re: Thermocouple welder Well... If we're going to MacGuyver it, you can just strip the insulation off the ends of the two wires, twist the wires together, and smack the joint with a hammer to create a TC junction. -Ken A. On Mon, Jun 15, 2009 at 9:59 PM, Ron Pickard, RPQ <rpick...@rpqconsulting.com> wrote: Hi Pete, On the cheap, a used large value DC capacitor with threaded terminals (easy to attach wires) along with two different-colored (to observe polarity), cut in half banana-banana cables should the job nicely, especially if you already have a DC power supply for charging. Just make sure the cap is safely voltage rated and polarity observed for the DC supply when charging. Also, common alligator clips that fit on the banana ends are easily replaceable as welding takes its toll. Please note that this set up will not produce controlled or consistent welds, but with a little practice the welds will soon become quite good. IHTH. Best regards, Ron Pickard RPQ Consulting Glendale, AZ 85303 +623.512-3451 tel, +623.848-9033 fax rpick...@rpqconsulting.com www.rpqconsulting.com <http://www.rpqconsulting.com/> www.linkedin.com/in/RonPickard ________________________________ From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of peterh...@aol.com Sent: Monday, June 15, 2009 6:47 PM To: emc-p...@ieee.org Subject: Thermocouple welder Hello friends, I am looking to purchase a very inexpensive thermocouple welder for type J and K as I have a small budget. Can anyone help please? I don't mind a used or refurbished unit. Thank you Pete ________________________________ A Good Credit Score is 700 or Above. See yours in just 2 easy steps! <http://pr.atwola.com/promoclk/10012657 x1221322979x1201367215/aol?redir=http:/ www.freecreditreport.com/pm/default.asp ?sc=668072%26hmpgID=62%26bcd=JunestepsfooterNO62> - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. 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