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Guest
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 Posted: Sun Jul 03, 2005 10:09 pm Post subject:
exotic thermocouple
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I have recently started to use an 1800 deg C kiln. It is equipped with
a thermocouple specified as a PR2040. Anyone know the mV vs.
temperature characteristic of this type of thermocouple?
TIA |
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Jerry Avins
science forum Guru
Joined: 03 May 2005
Posts: 534
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| Posted: Sun Jul 03, 2005 11:17 pm Post subject:
Re: exotic thermocouple
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ceramics@cof.com.au wrote:
| Quote: | I have recently started to use an 1800 deg C kiln. It is equipped with
a thermocouple specified as a PR2040. Anyone know the mV vs.
temperature characteristic of this type of thermocouple?
|
Pt's one of the platinum-rhodium thermocouples. Type B?
Jerry
--
Engineering is the art of making what you want from things you can get.
ŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻ |
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Jerry Avins
science forum Guru
Joined: 03 May 2005
Posts: 534
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| Posted: Sun Jul 03, 2005 11:33 pm Post subject:
Re: exotic thermocouple
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Jerry Avins wrote:
| Quote: | ceramics@cof.com.au wrote:
I have recently started to use an 1800 deg C kiln. It is equipped with
a thermocouple specified as a PR2040. Anyone know the mV vs.
temperature characteristic of this type of thermocouple?
Pt's one of the platinum-rhodium thermocouples. Type B?
Jerry
|
Probably not. Google for PR 20-40. Pt-20% Ro vs. Pt-40% Ro?
Jerry
--
Engineering is the art of making what you want from things you can get.
ŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻ |
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Spehro Pefhany
science forum beginner
Joined: 01 May 2005
Posts: 43
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| Posted: Sun Jul 03, 2005 11:42 pm Post subject:
Re: exotic thermocouple
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On Sun, 03 Jul 2005 21:17:30 -0400, the renowned Jerry Avins
<jya@ieee.org> wrote:
| Quote: | ceramics@cof.com.au wrote:
I have recently started to use an 1800 deg C kiln. It is equipped with
a thermocouple specified as a PR2040. Anyone know the mV vs.
temperature characteristic of this type of thermocouple?
Pt's one of the platinum-rhodium thermocouples. Type B?
Jerry
|
Type B is Pt 6% Rh/ Pt 30% Rh. R and S have a pure Pt leg.
This is a more exotic type, without an ISA designation AFAIK.
I have a very old document (in German only) that shows the output of
this type at 1800°C as only about 4.5mV, and somewhat like B, rather
flat at the low end.
Best regards,
Spehro Pefhany
--
"it's the network..." "The Journey is the reward"
speff@interlog.com Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog Info for designers: http://www.speff.com |
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Jerry Avins
science forum Guru
Joined: 03 May 2005
Posts: 534
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| Posted: Mon Jul 04, 2005 1:05 am Post subject:
Re: exotic thermocouple
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Spehro Pefhany wrote:
| Quote: | On Sun, 03 Jul 2005 21:17:30 -0400, the renowned Jerry Avins
jya@ieee.org> wrote:
ceramics@cof.com.au wrote:
I have recently started to use an 1800 deg C kiln. It is equipped with
a thermocouple specified as a PR2040. Anyone know the mV vs.
temperature characteristic of this type of thermocouple?
Pt's one of the platinum-rhodium thermocouples. Type B?
Jerry
Type B is Pt 6% Rh/ Pt 30% Rh. R and S have a pure Pt leg.
This is a more exotic type, without an ISA designation AFAIK.
I have a very old document (in German only) that shows the output of
this type at 1800°C as only about 4.5mV, and somewhat like B, rather
flat at the low end.
Best regards,
Spehro Pefhany
|
It's a standard, but not lettered pair. A line from
http://www.thermalinc.com/temp/products/pdf/ut320350tti.pdf:
Multiple inputsthermocouple (K, J, T, B, S, R, N, E, L, U, W,
Platinel 2, PR20-40, W97Re3-W75Re25), ...
Jerry
--
Engineering is the art of making what you want from things you can get.
ŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻ |
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Spehro Pefhany
science forum beginner
Joined: 01 May 2005
Posts: 43
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| Posted: Mon Jul 04, 2005 1:29 am Post subject:
Re: exotic thermocouple
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On Sun, 03 Jul 2005 23:05:58 -0400, the renowned Jerry Avins
<jya@ieee.org> wrote:
| Quote: | Spehro Pefhany wrote:
On Sun, 03 Jul 2005 21:17:30 -0400, the renowned Jerry Avins
jya@ieee.org> wrote:
ceramics@cof.com.au wrote:
I have recently started to use an 1800 deg C kiln. It is equipped with
a thermocouple specified as a PR2040. Anyone know the mV vs.
temperature characteristic of this type of thermocouple?
Pt's one of the platinum-rhodium thermocouples. Type B?
Jerry
Type B is Pt 6% Rh/ Pt 30% Rh. R and S have a pure Pt leg.
This is a more exotic type, without an ISA designation AFAIK.
I have a very old document (in German only) that shows the output of
this type at 1800°C as only about 4.5mV, and somewhat like B, rather
flat at the low end.
Best regards,
Spehro Pefhany
It's a standard, but not lettered pair. A line from
http://www.thermalinc.com/temp/products/pdf/ut320350tti.pdf:
Multiple inputsthermocouple (K, J, T, B, S, R, N, E, L, U, W,
Platinel 2, PR20-40, W97Re3-W75Re25), ...
Jerry
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Yes, and it seems to be mostly or entirely supported by Japanese
instruments.
Anyone have a pointer to modern tables or equations for this type?
Best regards,
Spehro Pefhany
--
"it's the network..." "The Journey is the reward"
speff@interlog.com Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog Info for designers: http://www.speff.com |
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