Type T (Copper/Constantan)
Type T is the most accurate thermocouple and has excellent corrosion resistance. Its temperature range is limited to 370°C and is good with wet gasses and moisture.
Chemical Composition, %
Specification (IEC60584-1)
| Type | EMF Versus Pt.67(mV) |
| 100℃ | 200℃ | 300℃ |
| TP | 4.229-4.325 | 9.238-9.334 | 14.792-14.932 |
| TN | 0.763-0.783 | 1.826-1.846 | 3.137-3.161 |
| TP-TN | 3.484-3.524 | 7.412-7.488 | 11.655-11.771 |
Physical and Mechanical Properties (RT, Annealed)
| Type | Density, g/cm³ | Melting Point, ℃ | Tensile Strength, MPa | Elongation, % | Resistivity, μΩ.m |
| TP | 9 | 1084 | ≥190 | ≥20 | 0.018 |
| TN | 8.9 | 1220 | ≥390 | ≥25 | 0.5 |
Features
- Good resistance to oxidation
- High EMS output
- Good temperature accuracy, sensitivity an stability
- In the temperature -200-0℃, it has better property, the year stability is less than ±3μV
Applications
Type T is also used for cryogenic applications. Because of its accuracy it is commonly used in the food industry where accurate measurements are very important.
