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NiCr- CuNi(Constantan) thermocouple (Type E)

NiCr- CuNi thermocouple (type E) is also named NiCr- Constantan thermocouple. The main chemical composition of positive leg NiCr (EP) is Ni: Cr≈90:10; negative leg Constantan (EN) is Cu: Ni≈ 55%: 45%. Although EN, TN, JN are all called Constantan, EN and TN 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 E thermocouple is -200~900℃.
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NiCr- CuNi thermocouple (type E) is also named NiCr- Constantan thermocouple. The main chemical composition of positive leg NiCr (EP) is Ni: Cr≈90:10; negative leg Constantan (EN) is Cu: Ni≈ 55%: 45%. Although EN, TN, JN are all called Constantan, EN and TN 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 E thermocouple is -200~900℃.

Type E thermocouple has the largest EMF output and highest sensitivity, so it is ideal for measuring small temperature change. It also has good stability in the low temperature range up to 300℃, and good property of anti-corrosion in humidity atmosphere. It is recommended for oxidizing or inert atmospheres, but cannot be used directly in reducing atmosphere and atmosphere with sulphur gases.

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

NiCr- CuNi(Type E) thermocouple bright wire

镍铬-铜镍(康铜)(E型)热电偶

 

E

I

750

900

-40~800

+1.5℃ or +0.4%t

GB/T4993

 

-40~900

 

+2.5℃ or +0.75%t

 * Operating temperature range (℃) 最高使用温度范围指下列规格: Ø3.2mm。


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