Huber Unichiller 400 Temperature-Controlled Circulating Chiller

Overview

The Huber Unichiller 400 is a high-performance, air-cooled temperature-controlled circulating chiller engineered for precision thermal management in demanding laboratory and pilot-scale applications. Based on Huber’s proven Unichiller platform, it operates across a wide temperature range of –10 °C to +40 °C with exceptional stability (±0.5 °C), enabling reliable control of exothermic reactions, jacketed reactors, analytical instrumentation, and centralized cooling networks. Unlike conventional tap-water cooling systems—which exhibit fluctuating inlet temperatures, high water consumption, and vulnerability to ambient conditions—the Unichiller 400 delivers consistent coolant supply at precisely regulated temperature and pressure. Its closed-loop architecture eliminates dependency on municipal water infrastructure, reduces environmental impact, and ensures operational continuity even under variable ambient loads up to +40 °C. The system integrates a robust scroll compressor, optimized refrigerant circuit (R507), and a high-capacity circulation pump capable of sustaining up to 4.6 bar pressure and 220 L/min flow—making it suitable for applications involving high-pressure-drop heat exchangers or multi-point distribution manifolds.

Key Features

• Advanced Pilot ONE controller with 5.7″ capacitive touchscreen, intuitive graphical interface, and smartphone-like navigation—including customizable Favorites menu for rapid access to frequently used setpoints and modes.
• Dual-mode thermal operation: simultaneous refrigeration and heating capability ensures seamless transition between cooling and warming phases without external auxiliary units.
• Intelligent energy management system dynamically modulates compressor speed and pump output based on real-time thermal load, minimizing power consumption while maintaining tight temperature control.
• Industrial-grade circulation pump with G1¼ AG male outlet, rated for continuous duty at up to 4.6 bar and 220 L/min—compatible with high-resistance process loops and long-distance coolant distribution.
• Comprehensive connectivity suite: RS232 serial interface for legacy instrument integration; Ethernet and dual USB ports (Device & Host) supporting remote monitoring, firmware updates, and data logging via LabVIEW, MATLAB, or custom SCADA platforms.
• Robust mechanical design: IP20-rated enclosure, Class I / NFL safety certification, and optional outdoor protection kit enabling year-round deployment—even in unheated outdoor environments with winter operation mode.

Sample Compatibility & Compliance

The Unichiller 400 is designed for compatibility with a broad spectrum of laboratory and process equipment requiring stable fluid-based thermal regulation—including glass-jacketed reactors, calorimeters, spectroscopic cells, HPLC column ovens, and vacuum pumps. Its adjustable bath volume (14–39 L) accommodates both compact benchtop setups and larger distributed cooling networks. The system complies with key international electrical and safety standards including IEC 61010-1 (Laboratory Equipment), EN 61000-6-3 (EMC Emission), and EN 61000-6-2 (EMC Immunity). For regulated environments, the Pilot ONE controller supports audit-trail-ready operation when paired with compliant data acquisition software—facilitating adherence to GLP, GMP, and FDA 21 CFR Part 11 requirements through secure user authentication, electronic signatures, and time-stamped parameter change logs.

Software & Data Management

The integrated Pilot ONE controller stores all operational parameters—including setpoint history, alarm events, compressor runtime, and temperature deviation trends—in non-volatile memory. Data export is supported via USB flash drive (CSV format) or network transfer using standard TCP/IP protocols. Optional Huber-specific software packages (e.g., Unistat Control Center) provide real-time dashboard visualization, multi-device fleet monitoring, automated report generation, and configurable email/SNMP alerts. All digital interfaces adhere to Modbus RTU/TCP protocol conventions, ensuring interoperability with third-party building management systems (BMS) and laboratory information management systems (LIMS). Firmware updates are delivered via signed binary packages verified through cryptographic checksums—ensuring integrity and traceability throughout the device lifecycle.

Applications

• Chemical synthesis: precise control of reaction enthalpy during catalytic hydrogenations, Grignard additions, or nitration processes where thermal runaway must be actively suppressed.
• Materials testing: conditioning of polymer samples prior to rheological or DMA analysis to ensure reproducible viscoelastic response.
• Pharmaceutical development: temperature stabilization of dissolution apparatus, stability chambers, and lyophilizer condenser systems.
• Instrument cooling: dedicated thermal management for mass spectrometers, NMR preamplifiers, and laser sources requiring low-noise, vibration-dampened coolant delivery.
• Centralized lab infrastructure: serving as primary chill source for multiple downstream devices via insulated, pressurized distribution manifolds with individual flow control valves.

FAQ

What is the minimum and maximum working bath volume?
The Unichiller 400 supports a functional bath volume range from 14 L (minimum fill level) to 39 L (expansion tank capacity).
Can the unit operate continuously at ambient temperatures up to +40 °C?
Yes—its thermally optimized condenser design and adaptive fan control allow uninterrupted 24/7 operation within the specified ambient range of +5 °C to +40 °C.
Is remote control and monitoring supported out of the box?
Yes—Ethernet and USB Host/Device interfaces enable immediate integration with local networks and host PCs without additional hardware adapters.
Does the system support external Pt100 sensors for process temperature feedback?
Yes—dedicated Pt100 input terminals are provided for closed-loop cascade control using external process sensor signals.
What refrigerant is used, and does it comply with current EU F-Gas regulations?
The system uses R507—azeotropic blend of R125/R143a—with zero ozone depletion potential (ODP = 0) and GWP value compliant with EU Regulation (EU) No 517/2014 for industrial chillers in this capacity class.