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JMT
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Join Date: Apr 2008
Location: Central Pa.
Posts: 11

Type "T" thermocouples

05/09/2008 11:54 AM

I have a type T thermocouple with a very small bead on the tip, approximately 1/8" in diameter. The outer insulation is brown and the inner wires are red and blue. It is about 12' long resembling standard thermocouple extension wire with the exception of the bead on the tip. I'm having trouble locating a vendor for this style thermocouple without having them special made. Can anyone lead me in the right direction? I've looked at many sites already and haven't seen anything than looks like mine.

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DaveR
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Join Date: Apr 2008
Location: Rhode Island, USA
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#1

Re: Type "T" thermocouples

05/09/2008 12:54 PM

Try McMaster-Carr at www.McMaster.com
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Bricktop
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#2

Re: Type "T" thermocouples

05/09/2008 1:08 PM

Sounds like someone made up a TC using some sort of lead wire, (I've not seen brown type T wire, the color code for the US is blue).. That's fine for use under about 100C, that's not critical.

You can find the real thing here:

http://www.omega.com/ppt/pptsc.asp?ref=ICIN&Nav=tema04

It's probably not going to matter what type of insulation is on the TC itself. It doesn't matter if it doesn't look the same. As long as it fits through your hole.

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Gasman
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Location: Western flank of the Pennines in Lancashire England
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#3

Re: Type "T" thermocouples

05/10/2008 4:16 AM

Just to starighten things out:

Brown is the outer sheath colour for ANSI MC96.1 Thermocouple grade wire straight out of the Omega Temperature Measurment & Control Handbook.

Pages & pages available on www.omega.com typically $39 for 1m length type T which you can cut down to length if required
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Bricktop
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#5
In reply to #3

Re: Type "T" thermocouples

05/10/2008 10:15 AM
Mini Plugs and Jacks400°F Continuous Ambient800°F Continuous Ambient
Thermocouple TypeT/C Type
Code		ANSI Color CodeIEC Color CodePlug
Code No.		Jack
Code No.		ColorHi-Temp Plug
Code No.		Hi-Temp Jack
Code No.

Iron Constantan

J

Black

Black

1260-J1210-JRed1360-J1310-J

Copper Constantan

T

Blue

Brown

1260-T1210-TRed1360-T1310-T

ChromelTM AlumelTM

K

Yellow

Green

1260-K1210-KRed1360-K1310-K

Nicrosil Nisil

N

Orange

Pink

1260-N1210-NRed1360-N1310-N

ChromelTM Constantan

E

Violet

Violet

1260-E1210-ERed1360-E1310-E

Platinum 10% Rhodium

S

Green

Orange

1260-S1210-SRed1360-S1310-S

Platinum 13% Rhodium

R

Green

Orange

1260-R1210-RRed1360-R1310-R

Uncompensated (CU)

U

White

White

1260-U1210-URed1360-U1310-U

Tungsten 5% Re/
Tungsten 26% Re

C

Brown

-

1260-C1210-CRed1360-C1310-C
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Bricktop
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United States - Member - Charter Member Engineering Fields - Instrumentation Engineering - Charter Member

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#6
In reply to #3

Re: Type "T" thermocouples

05/10/2008 10:23 AM

You are correct gasman, the TC's can be brown, ANSI leadwire is blue.

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wangito
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Join Date: Aug 2006
Location: Santiago Chile.
Posts: 845
Good Answers: 7
#4

Re: Type "T" thermocouples

05/10/2008 8:55 AM

From what you are describing, your TC looks to me as a Copper/Constantan beaded couple. The red colour conductor being the negative side.The beaded side being the TC junction. Buy the TC lead and make it yourself, If you have the means and the know-how (simple) to silver braze...

Nothing fancy, could be obtained from any TC supply source. maybe using different colour coding, if not ANSI.

Wangito.

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Vulcan
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Philippines - Member - New Member Engineering Fields - Instrumentation Engineering - New Member Engineering Fields - Control Engineering - Who am I?

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Location: Northern Mindanao, Philippines
Posts: 2147
Good Answers: 53
#7

Re: Type "T" thermocouples

05/11/2008 8:54 AM

Is there any special reason why you want the exact, same type that you have?

Technically speaking, there's no reason why you can't use any other Type T thermocouple. Just tell your supplier that you need this type and just use whatever he gives you. 'Should work with no problem.

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JMT
Active Contributor

Join Date: Apr 2008
Location: Central Pa.
Posts: 11
#8

Re: Type "T" thermocouples

05/12/2008 9:35 AM

I appreciate the input from everyone, It was all helpful.To answer a couple of questions so I don't leave everyone in the dark, I could have made my own with extension wire, but it is exposed to some harsh vapors. I did that to get by until I could find the proper type / style. The reason I want to stay with the same style is that this type is used in at least 6 different units in house, and I like uniformity. I did find the exact type and style through Cole Parmer. Thanks for your responses.

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Bricktop (3); DaveR (1); Gasman (1); JMT (1); Vulcan (1); wangito (1)

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