High-temperature calibration bath Orion 796

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Presentation
The Orion series stirred overflow liquid baths are available in three models (L, M, H) differentiated by their temperature ranges. The Orion range complements the Hydra series and offers a deeper calibration volume. This stirred liquid bath provides low-uncertainty calibration for long-stem thermometers and expansion thermometers.

Main advantages

• Large immersion depth: 470 mm
• Low fill cost: capacity 8.5 litres
• Adjustable stirring speed
• Homogeneity: better than 0.01°C
• Stability: ±0.007°C (typical values depending on range)
• Programmable automatic power-up
• Liquid level suited to expansion thermometers, no adapter required

Detailed description
With its large immersion depth (470 mm), the Orion can accommodate the largest Triple Point of Water cells and provide a highly stable temperature calibration environment (a few mK) at a reasonable cost. Accessories are available to support fixed-point cells of the ITS-90 (Mercury, Water, Gallium, Indium). The Orion requires only 8.5 L of fluid, offering a good compromise between optimal immersion depth and reduced fill cost. During operation, the liquid level sits 10 mm below the lid, facilitating calibration of expansion thermometers without additional adapters.

Models

• 796 L: temperature range -80°C to 125°C, supply voltage 240 V, supplied with internal refrigeration unit
• 796 M: temperature range -40°C to 125°C, supply voltage 240 V, supplied with internal refrigeration unit
• 796 H: temperature range 30°C to 300°C, supply voltage 240 V

Accessories (examples)

• 798-05-02B: copper equilibration block
• 798-05-03: support for two fixed-point cells
• 798-05-04: probe support
• 796-05-01: wide double support for large Triple Point of Water cell
• 796-03: monocular and holder (for reading glass thermometers)
• 796-02-10: overflow adaptor
• 796-05-03: thermometer stand kit
• 915/07, 915/08, 915/09: silicone oils (different ranges) and other oils C10/C20 (supplied by litre, 8.5 litres required for filling)

Technical characteristics / specifications

• Temperature: ORION L = -80°C to 125°C; ORION M = -40°C to 125°C; ORION H = 30°C to 300°C
• Immersion depth: 470 mm
• Opening: 150 mm diameter
• Volume: 8.5 litres
• Stability: typically ±0.006°C (examples provided: Methanol -80°C, Methanol -40°C, C10 Oil 125°C)
• Vertical homogeneity: ORION L/M = ±0.005°C (Methanol, 0°C); ORION H = ±0.007°C (C10 Oil, 125°C)
• Warm-up time: 25°C to 125°C < 50 min (C10 oil) for L/M; 30°C to 300°C < 120 min (VH oil) for H
• Cool-down time: 0°C to -80°C < 240 min (methanol) for L; 10°C to -40°C < 180 min (methanol) for M
• Dimensions (H x W x D): 1150 mm x 458 mm x 525 mm
• Mass: ORION L = 78 kg; ORION M = 68 kg; ORION H = 48 kg
• Communication: Supplied with control software and RS422 / RS232 interface