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Subject:	Re: Aluminum Tape for Profiling
From:	"Roach, David" <[log in to unmask]>
Reply To:	TechNet E-Mail Forum <[log in to unmask]>, Roach, David
Date:	Fri, 12 Aug 2005 09:01:06 -0500
Content-Type:	text/plain
Parts/Attachments:	text/plain (160 lines)
It has been a while since I have worked with the nitty gritty details of
thermocouples, but I seem to recall that a thermocouple junction can be
attached to another metal and still work properly.  I don't remember the
exact reason, but it had something to do with the voltages produced by the 2
extra junctions cancelling each other out.  If someone has an Omega catalog,
maybe they could check there to see if it is discussed there. 


Dave Roach
Trane GCC
4833 White Bear Parkway
St. Paul, Minnesota  55110
651-407-4294

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Dave Dixon
Sent: Friday, August 12, 2005 8:31 AM
To: [log in to unmask]
Subject: Re: [TN] Aluminum Tape for Profiling

Can you use a dissimilar metal alloy 
at the thermocouple junction without 
causing problems?  That just doesn't 
seem right to me. 
Dave

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Ofer Cohen
Sent: Friday, August 12, 2005 8:22 AM
To: [log in to unmask]
Subject: Re: Aluminum Tape for Profiling

 ... But, at the end of the day, the best bonding (from point of view of
thermal resistance and measurement accuracy) is to solder the thermo couple
to the measured pad using high temp solder. The tapes and adhesives shall be
used only as strain relievers.

Ofer Cohen
Quality and Technology manager
Seabridge - a Siemens company

> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]] On Behalf Of Charles Caswell
> Sent: Friday, August 12, 2005 14:23
> To: [log in to unmask]
> Subject: Re: [TN] Aluminum Tape for Profiling
> 
> You can also try the local hardware store where they have duct tape. 
> It does stick very well but after heating a little alcohol will remove 
> the residue.
> 
> -----Original Message-----
> From: Dave Dixon [mailto:[log in to unmask]]
> Sent: Thursday, 11 August 2005 10:31 AM
> To: [log in to unmask]
> Subject: Re: [TN] Aluminum Tape for Profiling
> 
> Omega offers "Thermcoat" adhesive for this purpose.  It may be too 
> permanent for your needs though.  Just my 2 ¢.
> Dave
> 
> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]] On Behalf Of Barr, Bob
> Sent: Thursday, August 11, 2005 9:58 AM
> To: [log in to unmask]
> Subject: Aluminum Tape for Profiling
> 
> Does anybody have a source for the aluminum tape recommended by KIC 
> and others for attaching thermocouples? I know KIC sells it, but their 
> price seems very high.
> 
> Thanks.
> 
> Bob
> 
> 
> 
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