Excellent temperature stability and low thermal EMF

RTD cable with constantan conductors

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.

Our standard cable items

For the complete range of standard stock and custom made Constantan RTD cable possibilities, visit our overview page.

Conductor Sheath material OD’s on stock (mm) Pair Spacing On stock
Nickel AISI316L ODs between 1.00 – 8.00 2,3,4,6,8 Normal and wide Yes Send inquiry
Nickel AISI316Ti 6.00 mm 4 Normal Yes Send inquiry
Nickel AISI321 ODs between 1.00 – 8.00 3,4,6,8 Normal and wide Yes Send inquiry
Nickel Inconel600 ODs between 2.80 and 3.25 2,4 Normal and wide Yes Send inquiry

How can we help you today?

Request a quotation for the mineral insulated RTD cable you need for your sensor.

Only high quality RTD Constantan cable

  • By Japanese manufacturer Okazaki, made with Japanese and European sourced materials
  • Supplied with a material 3.1 certificate
  • Excellent temperature stability and low thermal EMF
  • Good corrosion resistance, and mechanical robustness
  • Available in coiled form, with an option for straight lengths, which may retain a natural curvature.
  • The wall thickness is generally no less than 10% of the cable diameter.
  • Can be bent around a mandrel with a radius twice the sheath diameter without compromising sheath integrity or insulation resistance.
  • The sheath is compatible with welding, brazing, and soldering, preserving insulation resistance when standard care is applied for the metal type and thickness.
World renown quality of Okazaki mineral insulated cable
Quality check mineral insulated cables

RTD cable via Kamet

  • Standard cables available in stock for immediate shipment.
  • Non-stock items have a delivery time of 10–18 weeks.
  • Offered in full coils or custom lengths to meet your needs.
  • Access our inventory and pricing anytime through our 24/7 digital customer portal.
  • Expertise in international exports across Europe and the Middle East
About Kamet temperature solutions
Mineral insulated cables being loaded onto a warehouse cart

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 +/- 0.05 0.90 0.90 3.10 0.50 20
8.00 +/- 0.05 0.80 0.80 2.70 0.50 25
6.40 +/- 0.05 0.64 0.64 2.20 0.50 39
6.00 +/- 0.05 0.60 0.55 2.08 0.50 45
4.80 +/- 0.05 0.48 0.48 1.70 0.70 70
4.50 +/- 0.05 0.45 0.40 1.65 0.70 80
3.20 +/- 0.05 0.32 0.32 1.00 1.40 159
3.00 +/- 0.05 0.30 0.26 1.00 1.40 181

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 +/- 0.05 1.27 1.90 0.70 0.15 20
9.00 +/- 0.05 0.90 1.35 0.70 0.20 40
8.00 +/- 0.05 0.80 1.20 0.13 0.25 51
6.40 +/- 0.05 0.64 0.96 0.16 0.35 80
6.00 +/- 0.05 0.60 0.90 0.20 0.42 91
4.80 +/- 0.05 0.48 0.74 0.28 0.65 142
4.50 +/- 0.05 0.45 0.67 0.35 0.75 162
3.20 +/- 0.05 0.32 0.48 0.50 1.47 166
3.00 +/- 0.05 0.30 0.45 0.60 1.70 189

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