Phil, Does the Aluminum tape have to have certain characteristics or be from a certain manufacturer? We are presently using aluminum tape simply bought at a hardware store, should we be using more specific tape whose adhesive if more resistant to temperature? Does such a product exist? Samuel Ares Process Engineering Leitch Technology Int. [log in to unmask] <mailto:[log in to unmask]> (416) 445-9640 x. 3395 -----Original Message----- From: Phil Zarrow [SMTP:[log in to unmask]] Sent: Wednesday, February 07, 2001 7:57 PM To: [log in to unmask] Subject: Re: [TN] "Temprobe" thermocouples for profiling Howard and all - I benchmark tested the Temprobes a few years ago. I found the trick to getting a reltatively accurate reading was to make sure that the probe tip is in firm and tangent contact with the solder joint. If it is not making good contact, as in only a portion of the tip on the joint due the angle of the joint, you will get the noise you noticed (and a very inaccurate reading)l. Very similar to attaching a TC with kapton tape (another no--no) = you're reading air temp, IR, and not just the interconnection. Some users have actually put thermal "grease" on top of the Temprobe/Joint interconnection (yuk). I've been very dubious of temporary probe attachment but, having worked in contract assembly, know the reality of some situations. The Temprobe can work but with the caveats. Greg Jones of KIC and others have experimented with aluminum tape with very good, reliable results. I have yet to test this method thoroughly but Greg is very credible. Happy profiling! Phil Zarrow ITM Consulting Durham, Great White North of NH USA www.ITM-SMT.com ---------------------------------------------------------------------------- ----- Technet Mail List provided as a free service by IPC using LISTSERV 1.8d To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt delivery of Technet send the following message: SET Technet NOMAIL Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail Archives Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ---------------------------------------------------------------------------- ----- --------------------------------------------------------------------------------- Technet Mail List provided as a free service by IPC using LISTSERV 1.8d To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt delivery of Technet send the following message: SET Technet NOMAIL Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail Archives Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ---------------------------------------------------------------------------------