Coolium DX-60A1200 Ultra-Low Temperature Circulating Chiller

Overview

The Coolium DX-60A1200 is an integrated ultra-low temperature circulating chiller engineered for precise, stable, and continuous thermal management in demanding laboratory and pilot-scale applications. It employs a dual-stage cascade refrigeration architecture—comprising independent high- and low-temperature circuits—to achieve sustained operation at −60 °C while maintaining high cooling capacity and long-term reliability. Unlike single-stage chillers limited by thermodynamic constraints below −40 °C, the DX-60A1200 delivers 1200 W of verified cooling power at its minimum setpoint, enabling rapid heat extraction from exothermic reactions, cryogenic sample conditioning, and sustained low-temperature operation of analytical instrumentation. Its air-cooled design eliminates dependency on facility water infrastructure, making it suitable for flexible deployment across chemistry labs, biopharmaceutical development suites, materials testing facilities, and academic research centers where consistent sub-zero thermal control is critical.

Key Features

• Microprocessor-based PID temperature controller with real-time digital display, offering ±0.1 °C setpoint stability across the full −60 °C to −20 °C range;
• Cascade refrigeration system utilizing high-efficiency compressors and imported heat exchangers, optimized for performance at ultra-low evaporating temperatures;
• Hermetically sealed, magnetically coupled circulation pump rated for continuous operation down to −60 °C—eliminating seal leakage, vapor lock, or motor stall under cryogenic load;
• 316 stainless steel reservoir and fluid pathways ensure chemical compatibility with common heat transfer fluids (e.g., ethanol/water, ethylene glycol/water, or specialized low-temperature oils) and resistance to corrosion from aggressive solvents;
• Hermetic closed-loop design minimizes fluid evaporation, oxidation, and contamination—reducing maintenance frequency and operational cost over extended duty cycles;
• Comprehensive safety architecture including high/low pressure cutouts, oil pressure monitoring, phase loss protection, ground fault detection, overcurrent and overtemperature interlocks;
• Rc 3/4″ female NPT-compatible external port with integrated isolation valve and pressure relief for safe integration into reactor jackets, cold traps, or external heat exchangers;
• Compact vertical footprint (580 × 750 × 1580 mm) designed for floor-standing installation adjacent to reactors, spectrometers, or vacuum systems without requiring dedicated utility rooms.

Sample Compatibility & Compliance

The DX-60A1200 supports a broad spectrum of low-temperature process requirements without compromising fluid integrity or thermal fidelity. It is routinely deployed for jacketed reactor cooling (5–100 L scale), cryo-milling precooling, low-temperature distillation condensers, superconducting magnet precooling stages, and cold-stage thermal cycling in materials characterization. The unit complies with IEC 61000-6-3 (EMC emission limits) and IEC 61000-6-2 (immunity requirements), and its electrical design conforms to UL 61010-1 / EN 61010-1 for laboratory equipment safety. While not certified for GMP production environments per se, its robust construction, audit-ready operational logs (via optional RS485/Modbus interface), and traceable temperature control make it suitable for GLP-compliant research workflows. All refrigerants meet current EU F-Gas Regulation (EU) No 517/2014 and EPA SNAP program criteria for low-global-warming-potential (GWP) alternatives.

Software & Data Management

Standard operation is managed via an intuitive front-panel interface with password-protected parameter access and configurable alarm thresholds. Optional communication modules support RS485 (Modbus RTU) and Ethernet (TCP/IP) protocols, enabling integration into centralized lab automation platforms (e.g., LabVantage, STARLIMS) or SCADA systems. Logged data—including setpoint history, actual bath temperature, compressor run time, and fault codes—is timestamped and exportable as CSV for post-run analysis. When paired with compliant data acquisition software, the system supports 21 CFR Part 11–aligned audit trails, electronic signatures, and user-level access control—facilitating regulatory submissions in pharmaceutical and clinical research contexts.

Applications

• Controlled-rate cooling of catalytic hydrogenation and Grignard reaction mixtures in jacketed glass or stainless-steel reactors;
• Thermal stabilization of FTIR, Raman, and XRD cryostages requiring stable sub-zero base temperatures;
• Precooling and temperature hold for cryo-electron microscopy (cryo-EM) grid vitrification workflows;
• Condenser cooling for rotary evaporation under reduced pressure with low-boiling-point solvents (e.g., diethyl ether, THF);
• Process validation studies involving accelerated stability testing at defined sub-ambient conditions (e.g., ICH Q1A);
• Low-temperature material testing—including tensile strength, impact resistance, and thermal expansion coefficient measurement—per ASTM D792, ISO 11357, and DIN 53445 standards.

FAQ

What heat transfer fluids are compatible with the DX-60A1200 at −60 °C?
Ethanol/water (30/70 v/v), propylene glycol/water (40/60), or specialized low-temperature silicone oils (e.g., DC-200 series) are recommended. Avoid aqueous glycerol above 20 wt% due to viscosity-induced flow restriction below −40 °C.

Can the unit be operated continuously for 72+ hours at −60 °C?
Yes—the system is rated for uninterrupted operation under nominal load. Compressor duty cycle, ambient temperature (≤30 °C), and adequate ventilation (≥500 mm clearance on all sides) are prerequisites for sustained performance.

Is remote monitoring possible without third-party hardware?
With the optional RS485 or Ethernet module installed, native Modbus register mapping enables direct polling of temperature, status flags, and alarms via standard industrial controllers or custom Python/Node-RED scripts.

Does the chiller include factory calibration documentation?
Each unit ships with a NIST-traceable temperature verification report covering three points (−60 °C, −40 °C, −20 °C) measured using a calibrated Pt100 probe referenced to a Fluke 1523 thermometer.

What maintenance intervals are recommended?
Compressor oil inspection every 12 months; refrigerant circuit leak check annually; reservoir cleaning and fluid replacement every 24 months—or sooner if particulate accumulation or discoloration is observed.