9114, 9115A, 9116A Freeze-point furnaces

Precision Freeze-Point Realization for Primary and Secondary Standards

Accurate, Reliable Freeze-Point Realization—Three Models for Every Application

Fluke Calibration’s 9114, 9115A, and 9116A Freeze-Point Furnaces set the standard for reproducibility and uniformity in fixed-point temperature calibration. Each model is purpose-built to cover essential high-purity metal fixed points, maximize ease of use, and deliver industry-leading stability, safety, and throughput.

9114 Freeze-Point Furnace

Versatile Freeze-Point Realization from 100 °C to 680 °C

• Covers Indium, Tin, Zinc, and Aluminum Fixed Points – One furnace for multiple reference materials.
• Clean Gas-Initiated Super cooling – Start tin cell super cooling simply by turning on clean, dry air or inert gas—no need to manually remove fragile hot cells.
• Three-Zone Precision – Proprietary digital controller technology manages three heating zones from the front panel, allowing independent fine-tuning for exceptional stability and uniformity.
• Fine Resolution Control – Primary controller sets temperature in 0.01 °C increments; read actual temperature to two decimal places for outstanding accuracy.
• Optimized for Reliability – Main controller uses a high-temperature PRT for best-in-class accuracy, sensitivity, and repeatability.

9115A Sodium Heat Pipe Furnace

Uniform Single-Zone Maintenance for Aluminum and Silver Freeze-Points

• Wide Range for Aluminum and Silver – Temperature range from 550 °C to 1000 °C with uniformity gradients less than ±0.1 °C.
• Sodium Heat Pipe Design – Achieves extremely uniform temperature distribution, simplifying both heating and cooling transitions.
• Long Freeze-Point Plateaus – Achieve 8 to 10 hour plateaus, with up to 24 hours possible under optimal conditions.
• Lab Safety and Comfort – Built-in external cooling coils enable tap water circulation, minimizing heat load to your lab environment.
• Robust Protection – Integrated temperature cutouts prevent overheating and protect both SPRTs and the furnace

9116A High-Temperature Sodium Heat Pipe Furnace

Extended Range and Lifetime for Aluminum, Silver, and Copper Freeze-Points

• High-Temperature Capability – Operates from 550 °C to 1100 °C, perfect for aluminum, silver, and copper freezing point cells.
• Industry-Leading Durability – High-temperature sodium heat pipe delivers over 1000 hours at 1100 °C and up to 5000 hours at 982 °C.
• Uniformity and Control – Delivers ±0.05 °C uniformity across the full cell length, eliminating the need for multiple zone adjustments.
• Effortless Operation – Programmable controller simplifies freeze initiation, melting, and plateau control, maintaining ±0.15 °C stability for up to 20 hours or more.