PFA/PVC Insulated and Sheathed E Type Thermocouple Extension Wire
TYPE E (CHROMEL vs Constantan) may be used in oxidizing, inert or dry reducing atmospheres, or for short periods of time under vacuum. Must be protected from sulfurous and marginally oxidizingatmospheres. Produces the highest EMF per degree o any standardized thermocouple.
1. Chemical C omposition
Material | Chemical composition (%) | ||||
Ni | Cr | Cu | Mn | Al | |
EP(Chromel) | 90 | 10 | |||
EN(Constantan) | 45 | 55 |
2. Physical properties and Mechnical properties
|
Density(g/cm 3 ) |
Melting pointºC) |
Tensile Strength(Mpa) |
Volume resistivity(μΩ.cm) |
Elongation rate (%) |
EP(Chromel) | 8.5 | 1427 | >490 | 70.6(20ºC) | >25 |
EN(Constantan) | 8.8 | 1220 | >390 | 49.0(20ºC) | >25 |
3. EMF Value range at different temperature
Material | EMF value Vs Pt(μV) | |||||
100ºC | 200ºC | 300ºC | 400ºC | 500ºC | 600ºC | |
KP(Chromel) | 2769~2859 | 5921~6019 | 9272~9374 | 12709~12819 | 16144~16282 | 19537~19699 |
EN(Constantan) | 3499~3561 | 7389~7513 | 11647~11779 | 16109~16255 | 20699~20885 | 25362~25588 |
EMF value Vs Pt(μV) | ||||
700ºC | 800ºC | 900ºC | 1000ºC | 1100ºC |
22859~23043 | 26102~26308 | |||
30030~30292 | 34664~34960 |
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