AM1751 Secondary Reference PRT

The AM1751 series of Secondary Reference PRTs offers affordable reference probes for precision temperature measurement and calibration both in the lab and in the field.


These PRTs feature an accuracy of <0.015°C and short-term stability of <0.007°C. To reach the best performance in stability and repeatability, the sensing element has been specially designed to protect the platinum sensing wire from contamination at high temperatures. A unique supporting structure and filling material provide the best balance among the hysteresis effect, mechanical shock, and thermal shock performance. This high-performance probe fully meets the ITS-90 criteria for reference thermometers.

  • Temperature range: -200°C to 670°C

  • Accuracy: <0.015°C

  • Long term drift: <0.01°C

  • Short term stability: <0.007°C

  • Durable and shock-resistant

  • Temperature Coefficient 0.003925 Ω/Ω/°C

  • W(Ga)>=1.11807

  • Inconel™ sheath

Secondary Reference PRT Datasheet