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, %

TypeNiCu
TP100
TN4555

Specification (IEC60584-1)

TypeEMF Versus Pt.67(mV)
100℃200℃300℃
TP4.229-4.3259.238-9.33414.792-14.932
TN0.763-0.7831.826-1.8463.137-3.161
TP-TN3.484-3.5247.412-7.48811.655-11.771

Physical and Mechanical Properties (RT, Annealed)

TypeDensity, g/cm³Melting Point, ℃Tensile Strength, MPaElongation, %Resistivity, μΩ.m
TP91084≥190≥200.018
TN8.91220≥390≥250.5

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.