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Since 1995 Isotech have been producing various designs of special Au/Pt, Pt/Pd, Pd/Au thermocouples for researchers. From our experience we can now offer the most popular of these, the Pt/Au thermocouple in a standard form.

All wires are 99.999+% pure and are fully annealed according to the recommendations of McLaren. Assembly also follows his prescriptions which have never been bettered.

After final assembly and annealing the Pt/Au thermocouples will conform to IEC 62460, Edition 1 2008-07.

For the smallest uncertainties we calibrate the thermocouple at the Zinc, Aluminium and Silver Fixed Points.


Technical Feature Value
Temperature Range 0°C to 1000°C
Sheath Materials Measuring Junction Quartz
Reference Junction Stainless Steel
Thermo-element purities:
Platinum 99.999% pure
Gold 99.999% pure
Calibration options Isotech traceable calibration at Zinc, Aluminium and silver fixed points. NPL: Fixed Point Calibration: Calibrated at fixed points of Zn, Al and Ag (UKAS)
Uncertainty 0-400°C ±0.07°C. 400-1000°C ±0.05°C
Dimensions Refer to diagram
Carrying Case Included as standard
How to order Model type: Au/Pt Thermocouple. Including emf vs. temperature traceable calibration certificate and carrying case.


Gold / Platinum Thermocouple

0°C to 1000°C.

The most popular of the special thermocouples Isotech makes for researchers

  • Pure Metal Construction: 99.999% Gold and Platinum
  • Best Homogeneity
  • Economic Alternative to HTSPRTs

We are online and ready to chat to you if you need any advice and support, or if you prefer you can fill out the form below.

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Or call +44 01704 543830

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