JULABO DYNEO DD-200F Programmable Heating-Circulating Bath
| Brand | JULABO |
|---|---|
| Origin | Germany |
| Model | DD-200F |
| Temperature Range | −20 °C to +200 °C |
| Temperature Stability | ±0.01 °C |
| Bath Volume | 3–4 L |
| Circulation Type | Internal & External |
| Control Method | PID with ATC3 Multi-Point Calibration |
| Display | 3.5" TFT Color Screen |
| Heating Power | 2 kW |
| Refrigeration Power (Ethanol, −20 °C) | 0.02 kW |
| Pump Flow Rate | 8–27 L/min |
| Pump Pressure | 0.1–0.7 bar |
| Max. Fluid Viscosity | ≤50 cSt |
| Bath Opening/Depth | 13 × 15 / 15 cm |
| Internal Tubing Diameters | 8 mm & 12 mm |
| Refrigerant | R134a (70 g, GWP = 1430) |
| Safety Class | DIN 12876-1 Class III (FL) |
| Interface Options | USB (standard), RS232 or Analog I/O (optional) |
| Ambient Operating Temp. | 5–40 °C |
| Dimensions (W×L×H) | 23 × 39 × 65 cm |
| Weight | 25.7 kg |
Overview
The JULABO DYNEO DD-200F is a high-precision, programmable heating-circulating bath engineered for demanding laboratory and industrial applications requiring stable thermal control across an extended temperature range—from −20 °C to +200 °C. Unlike conventional single-function baths, the DD-200F integrates advanced refrigeration and heating in a compact, air-cooled architecture, enabling seamless operation at both cryogenic and high-temperature setpoints without external chillers or auxiliary cooling units. Its core thermal regulation relies on a dual-stage PID algorithm enhanced by JULABO’s proprietary ATC3 (Advanced Temperature Calibration 3-point) technology, ensuring traceable accuracy through user-performed multi-point calibration against reference PT100 sensors. The system employs a single-stage R134a compressor with ACC (Adaptive Compressor Control), allowing reliable startup and stable regulation even when transitioning from elevated temperatures—critical for process ramping, material testing, and reaction calorimetry workflows. Designed for integration into automated test benches or stand-alone use, the DD-200F complies with DIN 12876-1 Class III (FL) safety requirements, permitting safe operation with flammable heat-transfer media such as ethanol, silicone oil, or glycol-water mixtures.
Key Features
- Intuitive flywheel controller with tactile rotary encoder for rapid menu navigation, parameter entry, and confirmation—no touchscreen required
- 3.5″ high-resolution TFT color display showing real-time temperature, setpoint, pump status, safety limits, and optional trend curves simultaneously
- TCF (Temperature Control Flexibility) mode enabling independent tuning of internal bath vs. external application temperature profiles, including differential limit constraints and power capping
- Front-panel toggle switch for seamless transition between internal recirculation and external loop modes—with adjustable flow ratio control
- Magnetic, multi-port condenser cover facilitating dust-resistant operation and tool-free maintenance access
- Optimized airflow design: front-intake/rear-exhaust cooling allows side-by-side instrument placement without thermal interference
- Dual USB ports supporting data logging to USB flash drives and firmware updates; optional RS232 or analog (0–10 V / 4–20 mA) I/O for PLC or SCADA integration
- BLACK BOX diagnostic memory retains critical fault logs—including timestamped thermal excursions, compressor cycles, and sensor anomalies—for GLP-compliant root-cause analysis
Sample Compatibility & Compliance
The DD-200F accommodates a broad spectrum of heat-transfer fluids, validated for use with water, aqueous glycols, silicone oils (up to 200 °C), and flammable solvents including ethanol and isopropanol—subject to DIN 12876-1 Class III (FL) certification. Its stainless-steel bath chamber and integrated lid minimize evaporation and oxidation, while the M16×1 external port—supplied with dual quick-connect adaptors (8 mm and 12 mm ID)—ensures leak-tight coupling to reactors, viscometers, or spectroscopic cells. All electrical and thermal safety systems meet CE, UL/CSA recognition criteria. For regulated environments, the device supports audit-ready operation: temperature logs include ISO/IEC 17025-aligned metadata (operator ID, timestamp, calibration certificate ID), and optional analog outputs can feed into 21 CFR Part 11–compliant data acquisition systems when paired with validated software.
Software & Data Management
While the DD-200F operates autonomously via its embedded controller, JULABO’s optional LabSoft software enables remote configuration, multi-device synchronization, and export of time-stamped temperature/pump data in CSV or Excel-compatible formats. All USB-recorded datasets include checksum-verified headers identifying instrument serial number, firmware version, ATC3 calibration date, and ambient conditions. The built-in BLACK BOX stores up to 10,000 event records with millisecond resolution—sufficient to reconstruct thermal transients preceding hardware faults. For continuous monitoring, the analog output option provides real-time 4–20 mA signals proportional to bath temperature or pump speed, compatible with distributed control systems (DCS) used in QC labs adhering to ASTM E2500 or ISO 9001 validation protocols.
Applications
- Calibration of thermocouples, RTDs, and infrared sensors across wide thermal spans
- Thermal preconditioning of polymers, composites, and electronic components prior to mechanical or electrical testing
- Stabilization of optical benches, interferometers, and laser sources requiring sub-0.02 °C drift over 24 h
- Controlled heating/cooling of jacketed glass reactors in synthetic chemistry and pharmaceutical development
- Viscosity measurement support for rotational rheometers requiring precise thermal equilibration of sample geometry
- Accelerated aging studies per ASTM D573, ISO 188, or IEC 60068-2-14 where reproducible thermal cycling profiles are mandated
FAQ
Can the DD-200F operate continuously at +200 °C using silicone oil?
Yes—the stainless-steel bath, sealed insulation, and optimized condenser design allow uninterrupted operation at maximum setpoint with appropriate high-temperature fluids. Ensure fluid flash point exceeds 220 °C and replace per manufacturer’s service interval.
Is external PT100 feedback supported for closed-loop control of an external vessel?
Yes—via the optional external sensor input, the unit can regulate based on direct measurement at the process point, overriding internal bath temperature for superior application-level accuracy.
Does the USB data logging meet FDA 21 CFR Part 11 requirements?
The hardware supports ALCOA+ principles (Attributable, Legible, Contemporaneous, Original, Accurate); full Part 11 compliance requires validated third-party software and organizational procedural controls—not inherent to the device alone.
What maintenance is required for the R134a refrigeration system?
No routine refrigerant servicing is needed—the sealed compressor assembly is rated for ≥20,000 operating hours. Condenser cleaning every 6–12 months (depending on lab dust levels) suffices.
Can multiple DD-200F units be synchronized for parallel temperature profiling?
Yes—LabSoft software enables master-slave configuration, allowing coordinated ramp/soak sequences across up to 16 units with shared timebase and interlock logic.
