High-temperature calibration bath Neptune 915

low-temperaturefor temperature sensorshigh-precision

Description
The Neptune 915 series parallel-tube stirred liquid calibration bath provides very high stability (0.0006°C) and excellent homogeneity.

Usage and general characteristics
Precision temperature probes must be calibrated in furnaces or baths that ensure the best possible homogeneity and stability. Neptune baths are specifically designed for this purpose, featuring a standard immersion depth of 400 mm. The parallel-tube bath technology ensures superior uniformity. Its cylindrical calibration volume requires only 7 litres of fluid (water or oil depending on temperature). Models 915LW and 915MWE can be connected to an external cooling source to reduce cooldown time. The parallel-tube system circulates the liquid behind the calibration zone and through the working area, ensuring very low vertical and axial gradients and therefore very low uncertainty.

Key points

• 3 models available (temperature ranges from −65°C to 300°C depending on model)
• Stability up to ±0.0006°C (water, @50°C)
• Excellent vertical uniformity (±0.0002°C, water @50°C)
• Standard immersion depth 400 mm (7 litres)

Main specifications (table)
Model: 915LW | 915MWE | 915H
Temperature range: −65°C to 40°C | −30°C to 40°C | 30°C to 300°C
Calibration volume / dimensions: Diameter: 100 mm; Depth: 400 mm (7 litres) or 530 mm with option 915/D
Absolute stability (with high-stability controller / standard controller): ±0.0006°C (water, @50°C); ±0.002°C (oil, @100°C); standard controller: ±0.004°C (water, @50°C); ±0.007°C (oil, @100°C)
Vertical uniformity: ±0.0002°C (water, @50°C)

General specifications (table)
External dimensions (W × D × H): 580 × 640 × 1020 mm
Mass: 90 kg (915LW) | 75 kg (915MWE) | 45 kg (915H)
Power supply: 108 / 130 V or 208 / 240 V, 50/60 Hz
Power: 1.8 kW (without refrigeration unit)

Delivered as standard

• Cal Notepad software
• Serial communication cable
• User manual

Models and options

• 915 LW: deep immersion calibration bath, −65°C to 40°C
• 915 MWE: deep immersion calibration bath, −30°C to 40°C
• 915 H: deep immersion calibration bath, 30°C to 300°C
• Option 915/D: immersion depth extension tube (530 mm)
• Refrigeration units: multiple versions (e.g. 915/10, 915/11) to achieve ranges −30°C to 40°C and −65°C to 40°C

Accessories

• 915/01a: Aluminium equalisation block
• 915/01b: Copper equalisation block
• 915/02: Glass thermometer holder
• 915/03: Monocular and holder (for reading glass thermometers)
• 915/05: Calibration tube and equalisation block holder
• 796-05-03: Probe calibration support kit
• 915/10: Refrigeration unit for −30°C to 40°C range
• 915/11: Two-stage refrigeration unit for −65°C to 40°C range

Oils (7 litres required to fill the bath)

• 915/07: Silicone oil 40°C to 180°C (1 L can)
• 915/08: Silicone oil 150°C to 250°C (1 L can)
• 915/09: Silicone oil 40°C to 288°C (1 L can)

Supports for fixed-point cells

• 915-05-43: Support for mini Mercury cell
• 915-05-44: Support for large Mercury cell
• 915-05-41: Support for mini Triple Point of Water cell
• 915-05-40: Support for Triple Point of Water cell
• 915-05-39: Support for mini Gallium cell
• 915-05-38: Support for large Gallium cell
• 915-05-42: Support for Slim cell

Transport information
External dimensions (W × D × H): 580 × 640 × 1020 mm
Mass: LW model: 90 kg | MWE model: 75 kg | H model: 45 kg

Technical characteristics / specifications

• Commercial model: Neptune 915
• Temperature ranges by model: 915LW (−65°C to 40°C), 915MWE (−30°C to 40°C), 915H (30°C to 300°C)
• Calibration volume: cylinder Ø 100 mm, standard depth 400 mm (7 litres)
• Optional depth: 530 mm with 915/D
• Absolute stability (high-stability controller): ±0.0006°C (water @50°C); (oil @100°C: ±0.002°C)
• Stability (standard controller): ±0.004°C (water @50°C); ±0.007°C (oil @100°C)
• Vertical uniformity: ±0.0002°C (water @50°C)
• External dimensions: 580 × 640 × 1020 mm
• Mass by model: 90 kg / 75 kg / 45 kg
• Power supply: 108/130 V or 208/240 V, 50/60 Hz
• Power: 1.8 kW (without refrigeration unit)
• Filling fluid: water or oil depending on temperature (7 litres)
• Available accessories and options: equalisation blocks, thermometer supports, calibration tubes, refrigeration units, hybrid analog/digital controller (0.01°C resolution), specific oils