Platinum Thermocouples

Type S thermocouple

Type S Thermocouples

The best high-temperature thermocouple is type S

  • Best thermocouple for constant high-fire (Cone 8 to Cone 10) applications is a Type S platinum thermocouple with an alumina sheath.

  • Recommended for the most extreme conditions (like firing crystalline glazes) because of its expense - or if the value or precision of your work is such that you do not want to risk thermocouple drift.


  • Platinum / Platinum-Rhodium metal

  • 5/16" OD alumina sheath

  • Ungrounded

  • Two available lengths: 120mm (4.75") and 160mm (6.3")

  • Termination is in a ceramic terminal block.


Technical information

  1. Type S thermocouples are composed of a positive leg which is 90% platinum and 10% Rhodium, and a negative leg which is 100% platinum.
  2. It is usable from 32°F to 2700°F. (0°C to 1480°C).
  3. It has a different EMF output than Type K thermocouples (meaning the same temperature will produce different voltages to the control which must then be interpreted differently).
  4. That different scale requires both a simple hardware configuration change and a software change to take effect so it can not be done inadvertently.
  5. At temperatures used in pottery kilns (even the highest 2350°F) these thermocouples can last for a very long time (as long as they are not mechanically broken).

Retrofitting a control with Type K Thermocouples

  1. This is not a retrofittable option on DynaTrols used before Jan 1, 2006.
  2. On the 700 DynaTrol boards or Genesis control it is possible to switch from Type K to Type S with a programming change and a jumper change.
  3. You MUST also change the thermocouple extension wire from Type K wire to Type S wire.

    Important Note when replacing a control when using a Type S Thermocouple

    1. If you have a Type S thermocouple or are retrofitting an older kiln with a Type S thermocouple the control must be configured for use with Type S thermocouples. If not the kiln could seriously overfire and meltdown. See this for more information...
    Name SKU Price
    Type S Upgrade for 1 thermocouples T-G-S001/UG $355.00
    Type S Upgrade for 2 thermocouples T-G-S002/UG $705.00
    Type S Upgrade for 3 thermocouples T-G-S003/UG $1,060.00