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熱電耦特性表
ANSI
熱電耦分類
+極
材質
-極
材質
熱電耦級
使用範圍
補償導線
使用範圍
標準誤差 特殊品誤差 應用例
J IRON
FE
Cu-Ni -210 to 1200℃,
-346 to 2193℉
0 to 200℃,
32 to 392℉
2.2℃ or 0.75% 1.1℃ or 0.4% Reducing, Vacuum, Inert.
Limited Use in Oxidizing at High Temperatures
Not Recommended for Low Temperatures
K Ni-Cr Ni-Al -270 to 1372℃,
-454 to 2501℉
0 to 200℃,
32 to 392℉
2.2℃ or 0.75%
Above 0℃
2.2℃ or 2.0% Below 0℃
1.1℃ or 0.4% Clean Oxidizing and Inert.
Limited Use in Vacuum or Reducing.
Wide Temperature Range,
Most Popular Calibration
V* Cu Cu-Ni   0 to 80℃,
32 to 176℉
    Alternative to KX type extension
wire for low temperatures;
Not recommended for general use
T Cu Cu-Ni -270 to 400℃,
-454 to 752℉
-60 to 100℃,
-76 to 212℉
1.0℃ or 0.75%
Above 0℃
1.0℃ or 1.5% Below 0℃
0.5℃ or 0.4% Mild Oxidizing, Reducing Vacuum or Inert.
Good Where Moisture is Present.
Low Temperature and Cryogenic
Applications
E Ni-Cr Cu-Ni -270 to 1000℃,
-454 to 1823℉
0 to 200℃,
32 to 392℉
1.7℃ or 0.5%
Above 0℃
1.7℃ or 1.0% Below 0℃
1.0℃ or 0.4% Oxidizing or Inert.
Limited Use in Vacuum or Reducing.
Highest EMF Change Per Degree
N Ni-Cr-Si Ni-Si-Mg -270 to 1300℃,
-450 to 2372℉
0 to 200℃,
32 to 392℉
2.2℃ or 0.75%
Above 0℃
2.2℃ or 2.0% Below 0℃
1.1℃ or 0.4% Alternative to Type K More Stable
at High Temps
R Pt-13%Rh Pt -50 to 1768℃,
-58 to 3214℉
0 to 150℃,
32 to 300℉
1.5℃ or 0.25%
0.6℃ or 0.1% Oxidizing or Inert.
Do Not Insert in Metal Tubes.
Beware of Contamination.
High Temperature
S Pt-10%Rh Pt -50 to 1768℃,
-58 to 3214℉
  1.5℃ or 0.25% 0.6℃ or 0.1% Oxidizing or Inert.
Do Not Insert in Metal Tubes.
Beware of Contamination.
High Temperature
U* Cu Cu-Ni   0 to 50℃,
32 to 122℉
    Extension grade connection wire
for R and S thermocouples;
also known as RX and SX extension wire
B Pt-30%Rh Pt-6%Rh 0 to 1820℃,
32 to 3308℉
0 to 100℃,
32 to 212℉
0.5% over 800℃ NOT
ESTABLISHED
Oxidizing or Inert.
Do Not Insert in Metal Tubes.
Beware of Contamination.
High Temperature.
Common Use in Glass Industry
G*(W) W W-26%Re 0 to 2320℃,
32 to 4208℉
0 to 260℃,
32 to 500℉
4.5℃ to 425℃
1.0% to 2320℃
NOT
ESTABLISHED
Vacuum, Inert, Hydrogen.
Beware of Embrittlement.
Not Practical Below 750℉
Not for Oxidizing Atmosphere
C*(W5) W-5%Re W-26%Re 0 to 2320℃,
32 to 4208℉
0 to 870℃,
32 to 1600℉
4.5℃ to 425℃
1.0% to 2320℃
NOT
ESTABLISHED
Vacuum, Inert, Hydrogen.
Beware of Embrittlement.
Not Practical Below 750℉
Not for Oxidizing Atmosphere
C*(W3) W-3%Re W-25%Re 0 to 2320℃,
32 to 4208℉
0 to 260℃,
32 to 500℉
4.5℃ to 425℃
1.0% to 2320℃
NOT
ESTABLISHED
Vacuum, Inert, Hydrogen.
Beware of Embrittlement.
Not Practical Below 750℉
Not for Oxidizing Atmosphere