Chamber oven Oberon 426

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Overview The heat-pipe furnace Oberon 426 operates from 450°C to 1100°C. It is ideal for performing calibrations at Aluminium, Silver or Copper fixed points. It is also designed for comparison calibration of temperature probes and for calibrating infrared thermometers. Heat-pipe furnaces provide optimal performance for implementing and maintaining mini fixed-point cells. The Oberon 426 can be used with blackbody fixed-point cells. The furnace body, with its specific isothermal design based on circulating a fluid around the calibration zone, guarantees a very low temperature gradient over the height of the well. The internal wall of the heat-pipe conduit is not subjected to thermal expansion stresses from the external wall until the conduit reaches conduction temperature. The working fluid is permanently contained within the welded enclosure.

Key points

• Large calibration volume: 50 x 300 mm depth
• Wide temperature range: 450°C to 1100°C
• Comparison and infrared calibration
• Fixed-point calibration for Aluminium, Silver or Copper

Main specifications Temperature range: 450°C to +1100°C
Stability: ±0.05°C
Ramp time (up/down): 4 h
Calibration volume: 50 x 300 mm depth

General specifications Dimensions: 410 x 415 x 280 mm
Weight: 30.5 kg
Display: Resolution: 0.1°C
Power supply: 110 V, 50/60 Hz • 1500 W • 230 VAC transformer available as option
Communication interfaces: RS 232

Instrument - supplied as standard with

• OBERON 426 high-temperature furnace, 450°C to 1100°C
• Cal Notepad software
• Serial communication cable
• User manual
• Traceability certificate

Metal sleeve Reference 426-06-05 Adjustable equalisation block. Well diameters: 6 x 8 mm. Depth: 250 mm.

ITS-90 fixed-point cells

• M 17672: Aluminium cell in quartz
• M 17673: Silver cell in quartz
• M 17674: Copper cell in quartz

Other accessories

• 426-04-00: Inconel cell support with insulators (Aluminium to Copper cells)
• 935-14-48: Isolation transformer 230 V / 110 V
• 935-19-43: Isolation transformer 110 V / 110 V

Transport information Unpacked dimensions: 410 x 415 x 280 mm
Unpacked weight: 30.5 kg

Technical characteristics / specifications

• Temperature range: 450°C to 1100°C
• Stability: ±0.05°C
• Ramp time (up/down): 4 h
• Calibration well volume: 50 x 300 mm (well depth 250 mm, diameters 6 x 8 mm depending on sleeve)
• Overall dimensions: 410 x 415 x 280 mm
• Mass: 30.5 kg
• Display resolution: 0.1°C
• Power supply: 110 V, 50/60 Hz, 1500 W (230 VAC transformer optional)
• Interface: RS 232