Julabo Magnum 91 Highly Dynamic Temperature Control System
The Julabo Magnum 91 Highly Dynamic Temperature Control System is a state-of-the-art solution for precise and dynamic temperature control in the chemical, pharmaceutical and biotechnology industries. With an exceptionally wide temperature range and advanced control technology, this powerful temperature control unit offers maximum reliability and speed - even in demanding applications such as temperature control of reactors with a volume of up to 50 litres. The combination of high temperature precision, robust construction and advanced safety features makes this model a first-class choice for research and production environments that require uncompromising temperature control.
Technical highlights for industrial use
The device impresses with a variety of advanced features and technical specifications that are specifically designed to meet the requirements of modern laboratory and production environments:
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Working temperature range: -91 °C to +250 °C - ideal for extremely low-temperature processes up to high-temperature applications
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Temperature stability: ±0.05 to 0.2 °C - for reproducible results, even with sensitive tasks
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Heating capacity: 6 kW - fast heating times for large volumes
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Cooling capacity (ethanol): up to 4.8 kW at 100 °C, 4.6 kW at 20 °C, 3 kW at 200 °C
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Pump capacity: 24-35 l/min at 0.8-2.2 bar - constant flow rates for efficient heat exchange
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Filling volume: 21.6 litres (of which 11 l is active heat exchanger volume)
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Digital interfaces: RS232, RS485, optional Profibus - easy integration into digital control systems
Other key features:
The highly dynamic temperature control system features a VFD/LCD display for temperature indication, an integrated programmer for up to 6 programmes with 60 steps each, and a connection for external Pt100 temperature sensors, enabling exceptionally flexible control and feedback. The unit operates with environmentally friendly refrigerants (R23 and R404a) and is extremely efficient thanks to water-cooled technology, even in continuous high-performance applications. Safety and convenience features:
- Adjustable overtemperature protection
- Early warning system for low level
- 3-point calibration
- Class III (FL) according to DIN 12876-1: optimum protection for liquids with high hazard potential
Recommended temperature control fluids include Thermal HL80, HL45, H5, Fluorinert and Galden. The protection class corresponds to IP 20: protection against contact with foreign objects >12 mm, but without protection against water.
With compact dimensions of 71 x 88 x 165 cm, a total internal and expansion vessel volume of over 30 litres and a total weight of 442 kg, the Magnum 91 is designed for continuous operation and large volumes. The power supply can be flexibly connected to 400 V / 3 Ph. / 50 Hz or 230 V / 3 Ph. / 60 Hz, which facilitates international use. Certifications and standards
The system complies with DIN 12876-1 and has been classified as Class III (FL), which extends its use to liquids with an increased hazard potential - a mandatory requirement for many safety-relevant process environments. The structural design ensures comprehensive protection against contact.
Specific applications in science and industry
The Magnum 91 is designed for demanding temperature control tasks that require highly dynamic reactions, rapid temperature changes and maximum precision under extreme conditions. Typical areas of application using recommended temperature control fluids such as Thermal HL80, HL45, H5, Fluorinert or Galden are:
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Chemical synthesis: Extremely precise temperature control for endothermic or exothermic chemical reactions (e.g. polymerisation, Grignard reaction, synthesis with toluene, acetone or ethanol as solvents)
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Pharmaceutical process development: Control of crystallisation, condensation and other pharmaceutical syntheses with narrow temperature tolerances
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Materials science: Performing temperature cycles to characterise new materials or for ageing tests on plastics, metals and electronic materials
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Biotechnological processes: Precise temperature control in fermentations, cell cultures or enzyme reactions - for example, when using fermentation media or buffer substances
FAQs about the Magnum 91
How quickly does the temperature control system respond to temperature changes?
The device uses ICC cascade temperature control for ultra-fast and precise temperature adjustments, ideal when the setpoint needs to be changed frequently in experiments or processes.
What safety features are integrated?
In addition to adjustable overtemperature protection, the Magnum 91 offers an early warning system for low fill levels, 3-point calibration and complies with safety class III (FL) according to DIN 12876-1.
Can the device be operated with closed circuits?
Yes, it is optimally designed for closed external temperature control circuits. This minimises oxidation and significantly increases the service life of temperature control fluids.
For which substances is the temperature control system approved?
Temperature control fluids such as Thermal HL80, HL45, H5, Fluorinert and Galden are recommended. Ethanol or glycol-water mixtures are also possible, depending on the desired temperature range.
Conclusion
The Julabo Magnum 91 highly dynamic temperature control system offers a groundbreaking combination of performance, precision and process reliability for critical applications in the laboratory and in industrial production. Whether for high-precision chemical reactions, pharmaceutical process development or materials science analyses, the advanced technology, comprehensive safety features and flexible connectivity make this system the preferred choice for professionals who value uncompromising temperature control.
