Starting at $3,970.00
  • Usually ships in 2-3 weeks



  • -328 to 932°F (-200 to 500°C) temp range
  • Extremely low drift rate of < 0.002°C
  • 6.35mm diameter, 480mm length
  • ±0.0015°C repeatability
  • Includes wooden case
  • Meets ITS-90 criteria
  • Made of durable inconel 600 sheath


AccuMac AM1850 SPRTs are widely used as reference thermometers for dry block calibrators and temperature bath applications. A controlled cleaning and assembly process protects the platinum sensing wire from contamination even at high temperatures. The thermometer is filled with a gas mixture to make the sensor wire oxidation effect as low as possible. Every SPRT is fully tested for stability after it's manufactured.