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Cu- CuNi (Constantan) thermocouple (Type T)

Cu-CuNi thermocouple (type T) is also named Cu- Constantan thermocouple. The positive leg Cu(TP) is made by pure Copper, and the main chemical composition of negative leg Constantan (TN) is Cu: Ni≈ 55%: 45%. Although EN, TN, JN are all called Constantan, TN and EN don not give the same EMF output curve as JN. EN and TN are able to interchange but they are not interchangeable with JN. The operating temperature range of type T thermocouple is -200~350℃, Due to the low resistance of oxidation that Copper has, it is not advisable to go beyond that range.
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Cu-CuNi thermocouple (type T) is also named Cu- Constantan thermocouple. The positive leg Cu(TP) is made by pure Copper, and the main chemical composition of negative leg Constantan (TN) is Cu: Ni≈ 55%: 45%. Although EN, TN, JN are all called Constantan, TN and EN don not give the same EMF output curve as JN. EN and TN are able to interchange but they are not interchangeable with JN. The operating temperature range of type T thermocouple is -200~350℃, Due to the low resistance of oxidation that Copper has, it is not advisable to go beyond that range.

Type T thermocouple has good resistance to oxidation, high EMF output, with good temperature accuracy, sensitivity and stability. In the temperature range -200~0℃, it has better property, the year stability is less than ±3μV.


Thermocouple temperature range and tolerance

Name

热电偶名称

 

Usag Classification

分度

Grade

等级

Operating temperature range (℃)最高使用温度范围

 

Temperature range(℃)  温度范围

 

Tolerance

允许偏差

Standard

 

热行标准


 

Long term长期

Short term

短期


Cu- CuNi (Type T) thermocouple bright wire

铜-铜镍(康铜)(T型)热电偶

 

T

I

300

350

-40~350

±0.5℃ or ±0.4%t

GB/T2903


 

±1℃ or ±0.75%t


 

III


-200~40

±1℃ or ±1.5%t


* Operating temperature range (℃) 最高使用温度范围指下列规格: Ø2.0mm



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