Yarong YRDC-2010 Vertical Low-Temperature Circulating Bath
| Brand | Yarong |
|---|---|
| Origin | Shanghai, China |
| Model | YRDC-2010 |
| Instrument Type | Vertical |
| Temperature Stability | ±0.05 °C |
| Temperature Uniformity | ±0.05 °C |
| Setpoint Resolution | 0.01 °C |
| Minimum Operating Temperature | −20 °C |
| Bath Opening | 150 mm × 150 mm |
| Heating Power | 1000 W |
| Bath Volume | 10 L |
| External Dimensions | 500 mm × 400 mm × 700 mm |
| Net Weight | 35 kg |
| Circulating Medium | Heat-transfer oil or antifreeze solution |
| Vibration Stability | Low-vibration design compliant with standard laboratory equipment operation requirements |
Overview
The Yarong YRDC-2010 is a vertically configured low-temperature circulating bath engineered for precise thermal control in analytical instrumentation, material testing, and calibration applications. It operates on a closed-loop refrigeration-heating principle, integrating a hermetic compressor, high-efficiency plate heat exchanger, and PID-controlled dual-mode (cooling/heating) regulation system. Designed to maintain stable thermal environments over extended durations, the unit delivers consistent temperature output across its entire 10-liter working volume—critical for applications requiring high reproducibility in viscometry, spectrophotometry, calorimetry, and sensor calibration. Its −20 °C minimum operating temperature enables compatibility with low-temperature reaction monitoring, cryogenic sample conditioning, and cold-stage thermal coupling. The system’s vertical architecture minimizes footprint while optimizing fluid dynamics and heat exchange efficiency within the bath chamber.
Key Features
- Precision temperature control with ±0.05 °C stability and uniformity—validated across the full operational range using traceable PT100 sensors.
- High-resolution setpoint adjustment (0.01 °C increments) for fine-tuned experimental protocols and method development.
- Robust 1000 W heating capacity paired with optimized refrigeration circuitry, enabling rapid thermal recovery after load changes or external perturbations.
- 150 mm × 150 mm open-top bath configuration with corrosion-resistant stainless-steel tank—designed for easy immersion of probes, reactors, condensers, or external devices requiring thermal coupling.
- Low-vibration pump assembly with adjustable flow rate, minimizing mechanical interference in vibration-sensitive measurements (e.g., atomic force microscopy support baths or optical interferometry setups).
- Compact vertical form factor (500 mm × 400 mm × 700 mm) suitable for benchtop integration in space-constrained laboratories without compromising thermal performance.
- Compatibility with common heat-transfer media including silicone oils, ethylene glycol–water mixtures, and specialized low-temperature antifreeze formulations—ensuring flexibility across diverse application chemistries.
Sample Compatibility & Compliance
The YRDC-2010 supports immersion-based thermal management for a wide range of laboratory hardware, including rotary viscometers, UV-Vis cuvette holders, refractometer cells, chromatographic column ovens, and electrochemical test cells. Its stainless-steel bath interior and sealed circulation path prevent cross-contamination and ensure long-term chemical compatibility with non-aggressive organic and aqueous media. While not certified to specific international standards as a standalone medical or pharmaceutical device, the unit meets general electrical safety requirements per GB 4793.1 (equivalent to IEC 61010-1) and incorporates over-temperature, low-level, and dry-run protection circuits. When integrated into validated workflows—such as ASTM D2857 (infrared spectroscopy cell temperature control) or ISO 17025-accredited calibration labs—the YRDC-2010 contributes to documented thermal traceability when used with external NIST-traceable reference thermometers.
Software & Data Management
The YRDC-2010 features an embedded digital controller with intuitive membrane keypad interface and real-time LED display of setpoint, actual bath temperature, and system status indicators. Though it does not include native PC connectivity or proprietary software, its analog voltage output (0–5 V or 4–20 mA, configurable) enables seamless integration with third-party data acquisition systems (e.g., LabVIEW, MATLAB, or SCADA platforms) for time-stamped temperature logging and remote monitoring. Audit-ready operation is supported through manual logbook documentation; for GLP/GMP environments requiring electronic records, users may pair the unit with external validated DAQ hardware that complies with FDA 21 CFR Part 11 requirements—including user authentication, electronic signatures, and immutable audit trails.
Applications
- Temperature-controlled sample conditioning prior to rheological or particle size analysis.
- Stabilization of optical components (e.g., laser diodes, photomultiplier tubes) during spectral acquisition.
- Thermal equilibration of reference standards in metrology laboratories.
- Cooling jacket for reflux condensers in synthetic chemistry setups.
- Environmental simulation for accelerated aging tests of polymers and adhesives.
- Support bath for differential scanning calorimeters (DSC) requiring auxiliary cooling below ambient.
- Calibration of temperature-sensitive transducers, thermistors, and RTDs across sub-zero ranges.
FAQ
What is the recommended maintenance schedule for the YRDC-2010?
Routine inspection of coolant level, condenser coil cleanliness, and pump impeller integrity is advised every 3 months. Annual replacement of desiccant filter (if equipped) and verification of temperature sensor calibration using a traceable reference standard are recommended for critical applications.
Can the YRDC-2010 be used with water as the circulating medium?
Water is not recommended below 5 °C due to freezing risk. For sub-zero operation, use a mixture of propylene glycol/water (e.g., 40/60 v/v) or silicone oil with appropriate pour point and viscosity characteristics.
Is external circulation possible with this model?
Yes—the unit includes inlet and outlet ports (G1/4″ BSP) supporting closed-loop external circulation at flow rates up to 12 L/min, provided system backpressure remains within specified limits (≤0.2 MPa).
Does the YRDC-2010 support programmable ramp-and-soak profiles?
No—this model offers only static setpoint control. For dynamic thermal profiling, integration with an external programmable temperature controller or PLC is required.
What safety certifications does the unit carry?
It conforms to GB 4793.1-2007 (Measuring, control and laboratory equipment – Safety requirements), which aligns with IEC 61010-1:2010 for electrical safety in laboratory environments.
