Cooling dry block heater 9260

high-temperaturecompactexternally-controlled

Overview
The Fluke 9260 Mini Fixed-Point Cell Furnace is a compact ITS-90 fixed-point furnace designed for economical, space-saving realization of primary temperature fixed points using mini fixed-point cells (indium, tin, zinc, aluminum). It covers ITS-90 fixed points from 156.5985 °C to 660.323 °C and is engineered for simple, largely hands-off operation with built-in software routines for each cell type.

Key features

• Mini fixed point furnace.
• Available indium, tin, zinc, and aluminum mini cells.
• Quartz and metal fixed point cell options.
• Approximately half the cost of full-size fixed-point solutions.

Key benefits

• Lower total cost: smaller furnace and lower-cost, smaller-volume 99.9999% pure metal cells reduce investment and ongoing costs.
• Complete ITS-90 coverage using indium, tin, zinc and aluminum mini cells to realize primary fixed points required for laboratory calibration.
• Simple, hands-off operation: place a fixed-point cell in the furnace, run the built-in routine for the cell type (melting or freezing curves), and obtain a stable cell within a short time.
• Flexible software control: choose melting-point or freezing-point curves for each metal; melting points are easier to realize with negligible additional uncertainty for most labs.
• Proven performance: mini cells at melting points provide results comparable to traditional cells at freezing points for most applications.
• High-precision comparison calibrations: optional comparison blocks available (pre-drilled or custom wells) with well depth of 229 mm (9 in).

Models and compatible mini-cells

• 9260 – Mini Fixed-Point Furnace (for In, Sn, Zn, Al cells).
• 5914A – Mini Quartz Indium Cell.
• 5915A – Mini Quartz Tin Cell.
• 5916A – Mini Quartz Zinc Cell.
• 5917A – Mini Quartz Aluminum Cell.
• 5944 / 5945 / 5946 / 5947 – Mini Metal-Cased Indium/Tin/Zinc/Aluminum Cells.
• Accessory containers and mini-cell supports (e.g. 2940-9260, 2942-9260).

Notes on operation

• Built-in software routines support melting- or freezing-point curves for each metal cell type.
• Typical workflow: insert cell, allow furnace/cell to precondition, run the automated routine and use the stabilized plateau for precise measurement.

Technical specifications

• Temperature range: 50 °C to 680 °C.
• Ambient operating range: 5 °C to 45 °C.
• Stability: ±0.03 °C to 300 °C; ±0.05 °C above 300 °C.
• Vertical gradient: Top and bottom zones adjustable by offset.
• Plateau duration: 6–10 hours typical.
• Resolution: 0.01 °C.
• Display scale: °C or °F, switchable.
• Immersion depth: 229 mm (9 in).
• Stabilization time: 15 minutes nominal.
• Preheat wells: 2.
• Fault protection: sensor burnout and short protection, over-temperature thermal cutout.
• Display accuracy: ±0.2 °C to 300 °C; ±0.3 °C to 450 °C; ±0.5 °C to 680 °C.
• Comparison block: two multi-hole blocks, blanks, and custom blocks available.
• Well-to-well gradient (in comparison block): ±0.02 °C.
• Heating time: 1.25 hours from 25 °C to 680 °C.
• Cooling time: 10.5 hours from 680 °C to 100 °C.
• Communications: RS-232 included.
• Power requirements: 115 VAC (±10 %), 60 Hz, 11 A, or 230 VAC (±10 %), 50 Hz, 6 A; 1200 W (specify).
• Exterior dimensions (HxWxD): 489 x 222 x 260 mm (19.25 x 8.75 x 10.25 in).
• Weight: 20.5 kg (45 lb.) with block.