RE: [PSES] Thermocouple welder

2009-06-17 Thread emc-p...@ieee.org 
Brent,
 
Certain industries such as lighting still mix the stuff up.  It does a lot
better with heat that the fast tac glues many have moved over to.  I sure hate
that drying time though.  I think ED & D still sells it in a premixed
container.
 
Best Regards, 

Jody Leber 
Program Manager 

jody.le...@motorola.com 
http://www.motorola.com/producttesting 
blocked::http://www.motorola.com/producttesting>  

MPTS 
1700 Belle Meade Court 
Lawrenceville, GA 30043 

770.338.3581  P 
404.387.1224  C 
847.761.3145  F 

 




From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of Brent G 
DeWitt
Sent: Tuesday, June 16, 2009 6:36 PM
To: 'Ralph McDiarmid'; EMC-PSTC@LISTSERV.IEEE.ORG
        Subject: RE: [PSES] Thermocouple welder



So I guess nobody much uses Sodium Silicate and Kaolin as thermocouple
adhesive anymore?

 

Brent (old dinosaur) DeWitt

 

From: Ralph McDiarmid [mailto:ralph.mcdiar...@xantrex.com] 
Sent: Tuesday, June 16, 2009 3:13 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG
        Subject: Re: [PSES] Thermocouple welder

 

I don’t know how one would calibrate a thermocouple, but we use a 
welding
device cobbled together from carbon rod (from a dry-cell) and a 40Vdc power
supply and an alligator clip.   It takes 10 minutes to setup and couple of per
thermocouple to weld and inspect to ensure there is a little ball of metal at
the end of the two wires and there are no twists.   We might do 30 or 40 in
one sitting and the DIY allows us to make each to a reasonable length.  (at
least 2 metres). Eye protection recommended.

 

To attach, we use plain old super glue and tape the wires in a couple of
places for strain-relief.  It’s a method that has proven successful for us
for many years and the TC can most often be removed without damaging the weld.

 

What I’m not crazy about is placing a piece of Mylar tape between a bare
live part and the TC to electrically isolate one from the other.  Not sure
what thermal conductively the piece of tape provides and what error it might
introduce.  Silpad or similar material is likely a better choice for that
function.

 

Ralph McDiarmid, AScT 
Compliance Engineering Group 
Xantrex Technology Inc. 

From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of Barker, 
Neil
Sent: Tuesday, June 16, 2009 12:37 AM
To: peterh...@aol.com; emc-p...@ieee.org
Subject: RE: Thermocouple welder

 

Peter

 

Why bother?

Unless you need really long thermocouples that are not available off the
shelf as pre-welded units, it simply isn't worth the time and trouble. We
treat thermocouples as consumable items. They cost about £5 ($7) each and we
just discard them when broken. The thermocouples come with a Certificate of
Conformity, so there is no need to calibrate them. You can buy an awful lot of
those with the money you would spend on a welder, and then you've got to add
on the cost of the wire and the time to make the weld. With overheads, lab
time costs us about £70 ($100) an hour, so £5 would buy less than 5 minutes.
Do you think you can set up your welder, prepare the wires and make the weld
in less than 5 minutes?

Just my 2p (2c) worth.

 

Neil Barker

Manager

Central Quality

 

e2v

106 Waterhouse Lane, Chelmsford, Essex, CM1 2QU, England

Tel: +44 (0)1245 453616

Mobile:   +44 (0)7801 723735

Fax:+44 (0)1245 453571

 www.e2v.com <http://www.e2v.com/> 

 

P Consider the environment: do you really need to print this e mail?

 

 



From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of
peterh...@aol.com
Sent: 16 June 2009 00:47
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 

 





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RE: [PSES] Thermocouple welder

2009-06-16 Thread emc-p...@ieee.org 
Yes, Sodium Silicate and Kaolin are specified by the IECEE in CTL-OP 108.

I prefer this attachment only for HALT series, otherwise I prefer
cyanoacrylate for product safety Type tests.

Brian 


From: emc-p...@ieee.org [mailto:emc-p...@ieee.org]On Behalf Of Brent G DeWitt
Sent: Tuesday, June 16, 2009 3:36 PM
To: 'Ralph McDiarmid'; EMC-PSTC@LISTSERV.IEEE.ORG
Subject: RE: [PSES] Thermocouple welder

So I guess nobody much uses Sodium Silicate and Kaolin as thermocouple
adhesive anymore?
 
Brent (old dinosaur) DeWitt
 
From: Ralph McDiarmid [mailto:ralph.mcdiar...@xantrex.com] 
Sent: Tuesday, June 16, 2009 3:13 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] Thermocouple welder
 
I don’t know how one would calibrate a thermocouple, but we use a welding
device cobbled together from carbon rod (from a dry-cell) and a 40Vdc power
supply and an alligator clip.   It takes 10 minutes to setup and couple of per
thermocouple to weld and inspect to ensure there is a little ball of metal at
the end of the two wires and there are no twists.   We might do 30 or 40 in
one sitting and the DIY allows us to make each to a reasonable length.  (at
least 2 metres). Eye protection recommended.
 
To attach, we use plain old super glue and tape the wires in a couple of
places for strain-relief.  It’s a method that has proven successful for us
for many years and the TC can most often be removed without damaging the weld.
 
What I’m not crazy about is placing a piece of Mylar tape between a bare
live part and the TC to electrically isolate one from the other.  Not sure
what thermal conductively the piece of tape provides and what error it might
introduce.  Silpad or similar material is likely a better choice for that
function.
 
Ralph McDiarmid, AScT 
Compliance Engineering Group 
Xantrex Technology Inc. 
From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of Barker, Neil
Sent: Tuesday, June 16, 2009 12:37 AM
To: peterh...@aol.com; emc-p...@ieee.org
Subject: RE: Thermocouple welder
 
Peter
 
Why bother?
Unless you need really long thermocouples that are not available off the shelf
as pre-welded units, it simply isn't worth the time and trouble. We treat
thermocouples as consumable items. They cost about £5 ($7) each and we just
discard them when broken. The thermocouples come with a Certificate of
Conformity, so there is no need to calibrate them. You can buy an awful lot of
those with the money you would spend on a welder, and then you've got to add
on the cost of the wire and the time to make the weld. With overheads, lab
time costs us about £70 ($100) an hour, so £5 would buy less than 5 minutes.
Do you think you can set up your welder, prepare the wires and make the weld
in less than 5 minutes?
Just my 2p (2c) worth.
 
Neil Barker
Manager
Central Quality
 
e2v
106 Waterhouse Lane, Chelmsford, Essex, CM1 2QU, England
Tel: +44 (0)1245 453616
Mobile:   +44 (0)7801 723735
Fax:+44 (0)1245 453571
 www.e2v.com
 
P Consider the environment: do you really need to print this e mail?
 
 



From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of
peterh...@aol.com
Sent: 16 June 2009 00:47
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! 
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04439718. Registered address; 106 Waterhouse Lane, Chelmsford, Essex, CM1 2QU,
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RE: [PSES] Thermocouple welder

2009-06-16 Thread emc-p...@ieee.org 
So I guess nobody much uses Sodium Silicate and Kaolin as thermocouple
adhesive anymore?

 

Brent (old dinosaur) DeWitt

 

From: Ralph McDiarmid [mailto:ralph.mcdiar...@xantrex.com] 
Sent: Tuesday, June 16, 2009 3:13 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] Thermocouple welder

 

I don’t know how one would calibrate a thermocouple, but we use a welding
device cobbled together from carbon rod (from a dry-cell) and a 40Vdc power
supply and an alligator clip.   It takes 10 minutes to setup and couple of per
thermocouple to weld and inspect to ensure there is a little ball of metal at
the end of the two wires and there are no twists.   We might do 30 or 40 in
one sitting and the DIY allows us to make each to a reasonable length.  (at
least 2 metres). Eye protection recommended.

 

To attach, we use plain old super glue and tape the wires in a couple of
places for strain-relief.  It’s a method that has proven successful for us
for many years and the TC can most often be removed without damaging the weld.

 

What I’m not crazy about is placing a piece of Mylar tape between a bare
live part and the TC to electrically isolate one from the other.  Not sure
what thermal conductively the piece of tape provides and what error it might
introduce.  Silpad or similar material is likely a better choice for that
function.

 

Ralph McDiarmid, AScT 
Compliance Engineering Group 
Xantrex Technology Inc. 

From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of Barker, Neil
Sent: Tuesday, June 16, 2009 12:37 AM
To: peterh...@aol.com; emc-p...@ieee.org
Subject: RE: Thermocouple welder

 

Peter

 

Why bother?

Unless you need really long thermocouples that are not available off the shelf
as pre-welded units, it simply isn't worth the time and trouble. We treat
thermocouples as consumable items. They cost about £5 ($7) each and we just
discard them when broken. The thermocouples come with a Certificate of
Conformity, so there is no need to calibrate them. You can buy an awful lot of
those with the money you would spend on a welder, and then you've got to add
on the cost of the wire and the time to make the weld. With overheads, lab
time costs us about £70 ($100) an hour, so £5 would buy less than 5 minutes.
Do you think you can set up your welder, prepare the wires and make the weld
in less than 5 minutes?

Just my 2p (2c) worth.

 

Neil Barker

Manager

Central Quality

 

e2v

106 Waterhouse Lane, Chelmsford, Essex, CM1 2QU, England

Tel: +44 (0)1245 453616

Mobile:   +44 (0)7801 723735

Fax:+44 (0)1245 453571

 www.e2v.com <http://www.e2v.com/> 

 

P Consider the environment: do you really need to print this e mail?

 

 



From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of
peterh...@aol.com
Sent: 16 June 2009 00:47
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>  

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Sent by a member of the e2v group of companies. The parent company, e2v
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04439718. Registered address; 106 Waterhouse Lane, Chelmsford, Essex, CM1 2QU,
UK. This email and any attachments are confidential and meant solely for the
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RE: [PSES] Thermocouple welder

2009-06-16 Thread emc-p...@ieee.org 
This is the same welder I use and am very happy with it.  Bought it over 10
years ago and it is still going strong.  Needed to replace the needle nose
pliers used to hold onto the TC wires once (some of the techs here are not
very careful with their welding).  My only complaint about it would be that
the warning buzzer is too loud, but a piece of well placed tape solved that
problem.

 

Dan

 

From: Chris [mailto:cksal...@yahoo.com] 
Sent: Monday, June 15, 2009 10:42 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: [PSES] Thermocouple welder

 

Pete,  

You can try this site. 

This welder is easy to use once you have secured the carbon block.
 
http://dcccorporation.thomasnet.com/ite
/thermocouple-welders/hotspot-i-ii-ther
ocouple-welders/item-1112?&plpver=10&origin=compare&filter=0&CTypeID=2


Christopher


--- On Mon, 6/15/09, peterh...@aol.com  wrote:


From: peterh...@aol.com 
Subject: Thermocouple welder
To: emc-p...@ieee.org
List-Post: emc-pstc@listserv.ieee.org
List-Post: emc-pstc@listserv.ieee.org
List-Post: emc-pstc@listserv.ieee.org
Date: Monday, June 15, 2009, 4:47 PM

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!
  

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