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justinanto1987
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Good Answers: 3

Thermocouple Class and Error

04/03/2012 3:26 AM

How much is the error of Class 1, Class 2, Class A and Class B Thermocouples.

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Anonymous Poster #1
#1

Re: Thermocouple class and error

04/03/2012 3:50 AM

Have you read the article in Wikipedia?
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Anonymous Poster #1
#2

Re: Thermocouple class and error

04/03/2012 3:51 AM

http://cr4.globalspec.com/search/sitesearch?do=show&sort=textmatchrank&srch=thermocouple&order=asc
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justinanto1987
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India - Member - Justin Anto Engineering Fields - Electrical Engineering - Marks never made me laugh, but good memories did

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Location: Thrissur, Kerala, India
Posts: 177
Good Answers: 3
#4
In reply to #3

Re: Thermocouple class and error

04/04/2012 7:58 AM

Fe-Con (J)

Class 1
Class 2
Class 3		- 40 +750°C: ±0.004 . t
- 40 +750°C: ±0.0075 . t
---		or ±1.5°C
or ±2.5°C

Cu-Con (T)

Class 1
Class 2
Class 3		- 40 +350°C: ±0.004 . t
- 40 +350°C: ±0.0075 . t
-200 + 40°C: ±0.015 . t		or ±0.5°C
or ±1.0°C
or ±1.0°C

NiCr -Ni (K) and NiCrSi-NiSi (N)

Class 1
Class 2
Class 3		- 40 +1000°C: ±0.004 . t
- 40 +1200°C: ±0.0075 . t
-200 + 40°C: ±0.015 . t		or ±1.5°C
or ±2.5°C
or ±2.5°C

NiCr-Con (E)

Class 1
Class 2
Class 3		- 40 +800°C: ±0.004 . t
- 40 +900°C: ±0.0075 . t
-200 + 40°C: ±0.015 . t		or ±1.5°C
or ±2.5°C
or ±2.5°C

Pt10Rh-Pt (S) and Pt13Rh-Pt (R)

Class 1
Class 2
Class 3		0 +1600°C: ±[1+(t-1000).0.003]
- 40 +1600°C: ±0.0025 . t
---		or ±1.0°C
or ±1.5°C

Pt30RhPt6Rh (B)

Class 1
Class 2
Class 3		+600 +1700°C: ±0.0025 . t
+600 +1700°C: ±0.005 . t		or ±1.5°C
or ±4.0°C

I got some information from one website, but along with accuracy multiplication of t is given. Is it temperature reading ?

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