The Yellow Spring Instruments M17701 is a low-temperature furnace component designed for realizing and maintaining freeze plateaus of indium, tin, and zinc fixed-point cells. This specialized calibration system enables precise thermometer calibration to the International Temperature Scale of 1990 (ITS-90) standard. The furnace features a single-zone aluminum alloy core that minimizes thermal gradients and delivers control resolution of 0.1°C. Plateau maintenance times range from 10 to 12 hours for indium and tin, and 6 to 8 hours for zinc, with measurement uncertainty below 1 mK when used with cells.
Technical Specifications
• Product Code: ITL-M-17701
• Furnace Core Material: Aluminum alloy
• Control Resolution: 0.1°C
• Measurement Uncertainty: <1 mK (with cells)
• Plateau Maintenance Duration: Indium/Tin 10–12 hours; Zinc 6–8 hours
• Calibration Standard: International Temperature Scale of 1990 (ITS-90)
– Key Features
• Single-zone design with minimized thermal gradient along core length
• Independent over-temperature protection circuits (two devices)
• Dedicated on-off over-temperature control circuit
• Fusible link in main power circuit
• Self-contained, portable unit mounted on caster wheels
• Requires power supply only; no external utilities needed
– Typical Applications
• Realization and maintenance of indium freeze plateaus
• Realization and maintenance of tin freeze plateaus
• Realization and maintenance of zinc freeze plateaus
• Precision thermometer calibration
– Compatibility & Integration
• Compatible with Isotech Indium, Tin, and Zinc Fixed-Point Cells
• Designed for thermometer calibration workflows requiring ITS-90 traceability
