Julabo F-Series Circulating Chillers

Overview

The Julabo F-Series Circulating Chillers are precision-engineered laboratory temperature control systems designed for reliable, stable cooling and heat exchange in demanding analytical, materials testing, and process-critical applications. Based on vapor-compression refrigeration technology with optimized scroll or rotary compressors (model-dependent), the F-Series delivers consistent thermal regulation across a wide operating range of –10 °C to +40 °C. These units function as closed-loop circulators—pumping temperature-controlled fluid through external equipment such as spectrophotometers, laser sources, viscometers, or reactor jackets—to maintain isothermal conditions with high reproducibility. Their robust architecture, compact footprint, and intuitive front-panel interface make them suitable for benchtop integration in QC labs, R&D facilities, and production support environments where space efficiency and operational continuity are essential.

Key Features

• Three scalable models (F250, F500, F1000) offering refrigeration capacities of 0.25 kW, 0.5 kW, and 1.0 kW respectively at 20 °C ambient—enabling precise matching to application heat-load requirements.
• High-precision temperature stability of ±0.5 °C across the full setpoint range, achieved via PID-controlled refrigeration circuitry and integrated Pt100 sensor feedback.
• Energy-efficient operation utilizing environmentally compliant refrigerants (R-134a or R-513A, per model and regional regulation), minimizing power consumption without compromising cooling performance.
• Compact, space-saving chassis with ergonomic service access—front-mounted fluid reservoirs, transparent level indicators, and quick-connect drain valves simplify maintenance and fluid handling.
• Adjustable pump pressure (0.35–0.55 bar) and flow rate (1.7–9.5 L/min) ensure compatibility with diverse external circuits, including those with moderate backpressure or extended tubing runs.
• Wide fluid compatibility—including deionized water, aqueous ethylene glycol mixtures (up to 50 % v/v), and Julabo-certified heat-transfer fluids such as Thermal G—supporting low-temperature operation down to –10 °C without freezing risk.

Sample Compatibility & Compliance

The F-Series supports circulation of non-corrosive, low-viscosity heat-transfer media only. Users must verify chemical compatibility between selected fluid and wetted components (stainless steel reservoir, silicone/PVC tubing, brass fittings). Units comply with IEC 61010-1:2010 for electrical safety in laboratory equipment and meet CE marking requirements under the EU Machinery Directive and EMC Directive. While not intrinsically rated for hazardous locations, optional upgrades—including external alarm relay outputs and analog 0–10 V / 4–20 mA interfaces—are available for integration into validated systems adhering to GLP, GMP, or ISO/IEC 17025 frameworks. Documentation packages include Factory Acceptance Test (FAT) reports and material declarations per RoHS and REACH.

Software & Data Management

The F-Series operates via an embedded microcontroller with a high-contrast LCD display and tactile membrane keypad. Real-time parameters—including setpoint, actual bath temperature, refrigeration status, pump speed, and fluid level—are continuously monitored and logged internally (non-volatile memory, up to 10,000 data points). Optional RS232 or USB connectivity enables remote parameter adjustment and time-stamped data export using Julabo’s LabWorldSoft® software (Windows-compatible). For regulated environments, LabWorldSoft supports user-access levels, electronic signatures, and audit-trail generation compliant with FDA 21 CFR Part 11 when deployed with appropriate IT infrastructure and procedural controls.

Applications

• Stabilization of optical components in UV-Vis, FTIR, and fluorescence spectrometers requiring sub-degree thermal drift control.
• Cooling of high-power LED arrays, laser diodes, and photomultiplier tubes in analytical instrumentation.
• Temperature conditioning of rheometers, DSC cells, and thermal conductivity analyzers during calibration or routine testing.
• Process support for small-scale reactors, distillation condensers, and chromatography column ovens requiring precise heat rejection.
• Environmental simulation in material science labs—e.g., aging studies of polymers or battery electrolytes under controlled thermal cycling.

FAQ

What is the lowest temperature achievable with the F250 model using a 30% ethylene glycol/water mixture?
The F250 maintains stable operation down to –10 °C with appropriate antifreeze concentration; however, minimum attainable temperature depends on ambient conditions, heat load, and insulation of the external circuit.
Can the F-Series chiller be operated in a continuous 24/7 mode?
Yes—each model is rated for uninterrupted duty cycle under specified ambient conditions (≤30 °C, ≤70% RH) and proper ventilation clearance (≥10 cm on all sides).
Is remote monitoring possible without purchasing additional hardware?
Basic status readout (temperature, error codes) is visible on the front panel; full remote control and data logging require optional RS232/USB interface and LabWorldSoft® software.
Does Julabo provide validation documentation for IQ/OQ protocols?
Factory-generated IQ/OQ templates and test protocols are available upon request; site-specific execution remains the responsibility of the end-user’s qualified personnel.
How often should the refrigerant circuit be serviced?
Under normal laboratory use, the sealed refrigeration system requires no scheduled maintenance; periodic inspection of condenser coils and pump seals is recommended annually.