Constantan RTD cable

Temperature measurements up to 650°C.

Mineral insulated RTD cable with constantan conductors is a perfect choice for temperature measurements up to 650°C. Constantan conductors have a very stable resistance for a wide temperature range since it is a copper-nickel alloy. These cables are available in the following sheath materials;

Sheath materialMax. working temperature Melting temperature
Inconel 6001175°C1345°C
AISI 304900°C1400°C
AISI316(l)900°C1370°C
AISI316Ti900°C1370°C
AISI321900°C1350°C

Learn more about the difference between these sheath materials.

In short:

  • available in diameters ranging from 3.0mm to 8.0mm
  • available in normal spaced and wide-spaced execution
  • available with 3, 4 and 6 conductors
  • supplied with a material 3.1 certificate
  • made in Japan, with Japanese and European sourced materials

For the complete range of standard stock and custom made Copper RTD cable possibilities, visit our overview page. On this page you will also find estimated coil lengths and delivery times.

AerOpak MI RTD cable specs – Type A cable – Reversed mounted

OD (mm)Tolerance  (mm) Wall thickness  (mm) Conductor diameter (mm) Distance between wires  (mm) Resistance (Ω/m) m/Coil
9.00+/- 0.050.900.903.100.5020
8.00+/- 0.050.800.802.700.5025
6.40+/- 0.050.640.642.200.5039
6.00+/- 0.050.600.552.080.5045
4.80+/- 0.050.480.481.700.7070
4.50+/- 0.050.450.401.650.7080
3.20+/- 0.050.320.321.001.40159
3.00+/- 0.050.300.261.001.40181

AerOpak MI RTD cable specs – Type J cable – Top mounted

OD (mm) Tolerance  (mm) Wall thickness  (mm) Conductor diameter (mm)  Distance between wires  (mm) Resistance (Ω/m) m/Coil
12.70+/- 0.051.271.900.700.1520
9.00+/- 0.050.901.350.700.2040
8.00+/- 0.050.801.200.130.2551
6.40+/- 0.050.640.960.160.3580
6.00+/- 0.050.600.900.200.4291
4.80+/- 0.050.480.740.280.65142
4.50+/- 0.050.450.670.350.75162
3.20+/- 0.050.320.480.501.47166
3.00+/- 0.050.300.450.601.70189

Get an offer today!

We have a large range of cable in stock and offer quick delivery with a tracking service. Do you have any further questions? Please let us know and our specialists will be happy to advise you.


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Overview of Mineral insulated RTD cables Kamet Trading can supplyCopper RTD cableNickel RTD cableInconel 600 RTD cable