Julabo CORIO CD-1001F Universal Heating and Cooling Circulating Bath

Overview

The Julabo CORIO CD-1001F is a high-precision universal heating and cooling circulating bath engineered for demanding laboratory and pilot-scale industrial applications requiring stable, bidirectional temperature control across an exceptionally wide range—from −38 °C to +100 °C. Built upon Julabo’s decades of thermal management expertise, the CD-1001F employs a closed-loop, forced-circulation architecture with integrated PID-controlled heating and single-stage air-cooled refrigeration. Its core function is to maintain precise setpoint temperatures in external equipment—such as reactors, viscometers, spectrophotometer cells, or material testing fixtures—via pumped heat transfer fluid (e.g., water, water-glycol mixtures, or silicone oils). The system features a large stainless-steel bath reservoir (42–56 L capacity), optimized internal geometry, and a concealed coil design that maximizes usable bath space while minimizing thermal stratification. Designed for continuous operation under variable load conditions, it delivers ±0.03 °C temperature stability—critical for kinetic studies, calibration traceability, and ISO/IEC 17025-compliant testing environments.

Key Features

• Wide operational temperature span: −38 °C to +100 °C, enabled by R452A refrigerant (GWP 2140) and dual-mode PID control
• High-stability thermal regulation: ±0.03 °C at setpoint, with 0.1 °C resolution on LED display
• Integrated circulation pump delivering up to 15 L/min flow rate and 0.35 bar pressure, compatible with M16×1 external fittings
• Modular flow routing: Independent adjustment of internal vs. external circulation ratios via front-panel controls
• Enhanced usability: Backlit white LCD interface, removable ventilation grilles, recessed cooling coils, and standard stainless-steel bath cover with drain valve
• Compact footprint and side-vent-free compressor layout—enables dense benchtop deployment without thermal interference
• DIN 12876-1 Class III (FL) certified for flammable liquid handling, supporting safe operation with organic solvents and low-flashpoint media
• USB port for firmware updates and optional data logging integration (no proprietary software required)

Sample Compatibility & Compliance

The CD-1001F accommodates a broad spectrum of heat transfer fluids—including deionized water, 30–50% aqueous glycol solutions, and silicone oils—with compatibility verified per ISO 8504-2 and ASTM D1384 guidelines. Its stainless-steel bath and wetted components resist corrosion from common laboratory coolants and mild chemical vapors. As a Class III (FL) device per DIN 12876-1, it meets stringent requirements for use with flammable liquids in enclosed lab settings—making it suitable for applications involving ethanol, acetone, or isopropanol-based baths. While not intrinsically rated for hazardous area installation (e.g., ATEX), its electrical design complies with IEC 61010-1 Ed. 3 for laboratory equipment safety. The unit supports GLP/GMP workflows through repeatable setpoint accuracy and mechanical traceability of all adjustments; optional audit-trail-capable controllers may be added via third-party USB-to-serial interfaces for 21 CFR Part 11 compliance.

Software & Data Management

The CD-1001F operates autonomously via its embedded microcontroller and requires no host PC for basic functionality. Temperature setpoints, ramp rates, hold times, and pump speed are configured directly on the front panel. The USB interface enables firmware upgrades and facilitates periodic export of time-stamped temperature logs (CSV format) when connected to a Windows/Linux host running terminal-emulation software (e.g., PuTTY or Tera Term). No proprietary drivers or cloud services are involved—ensuring full data sovereignty and compatibility with air-gapped laboratory networks. For integration into SCADA or LIMS environments, Modbus RTU over USB-to-serial adapters (e.g., FTDI-based) is supported via documented ASCII command protocol, enabling remote monitoring and alarm triggering without vendor lock-in.

Applications

• Calibration of thermometers, RTDs, and thermocouples per ISO/IEC 17025 and ASTM E74
• Temperature conditioning of rheometers, DSC cells, and UV-Vis cuvettes during precision measurements
• Stabilization of laser sources, photodetectors, and optical benches requiring sub-0.1 °C thermal drift control
• Process simulation in pharmaceutical development—e.g., dissolution testing apparatus (USP Apparatus I–IV), stability chambers, and lyophilizer condenser precooling
• Materials science workflows including polymer crystallization kinetics, thermal expansion coefficient determination, and dielectric spectroscopy sample staging
• Chemical synthesis support: jacketed reactor temperature control, reflux condenser cooling, and cryogenic quenching

FAQ

What is the maximum recommended viscosity of heat transfer fluid for optimal pump performance?
For sustained operation at rated flow (15 L/min), Julabo recommends fluids with kinematic viscosity ≤50 mm²/s at the lowest operating temperature. Silicone oils up to 100 cSt may be used with reduced flow rates and extended stabilization times.
Can the CD-1001F be operated without the bath cover?
Yes, but removal invalidates the DIN 12876-1 Class III (FL) certification and increases evaporation, temperature gradient formation, and risk of contamination—use only in controlled, non-flammable applications.
Is external temperature feedback supported for cascade control?
No—the CD-1001F uses only internal bath sensor feedback. For external probe control, consider the Julabo PRESTO series or integrate a third-party PID controller with analog output.
How often does the R452A refrigerant require servicing?
Under normal operation and proper maintenance (clean condenser fins, ambient 10 years typical). Leak detection is performed during annual preventive maintenance.
Does the unit meet energy efficiency standards such as EU ErP Directive 2015/1188?
Yes—the CD-1001F complies with ErP Lot 20 requirements for refrigerated cabinets and circulators, achieving an Energy Efficiency Index (EEI) <100 when tested per EN 16852:2017 at 20 °C setpoint.