Yarong YRDC-3006 Vertical Low-Temperature Constant-Temperature Bath
| Brand | Yarong |
|---|---|
| Origin | Shanghai, China |
| Model | YRDC-3006 |
| Instrument Type | Vertical |
| Temperature Range | −30 °C to 100 °C |
| Temperature Stability | ±0.05 °C |
| Setpoint Resolution | 0.1 °C |
| Bath Opening | 150 × 150 × 150 mm |
| Bath Volume | 6 L |
| Heating Power | 1100 W |
| External Dimensions | 340 × 400 × 670 mm |
| Net Weight | 33 kg |
| Circulating Medium | Heat-transfer oil or antifreeze solution |
Overview
The Yarong YRDC-3006 is a vertically oriented, high-stability low-temperature constant-temperature bath engineered for precise thermal control in laboratory and analytical applications. It operates on a dual-mode thermoregulation principle—combining resistive heating with a hermetically sealed, environmentally optimized refrigeration circuit—to deliver stable temperature environments across a wide operational range of −30 °C to +100 °C. Designed for integration with external equipment such as spectrophotometers, viscometers, calorimeters, and reaction modules, the YRDC-3006 maintains thermal uniformity through forced circulation of heat-transfer media (e.g., silicone oil or ethylene glycol–water mixtures) via an internal pump and insulated bath chamber. Its compact vertical footprint minimizes bench space requirements while supporting consistent thermal performance under continuous operation.
Key Features
- High-precision digital PID temperature controller with 0.1 °C setpoint resolution and real-time display of both setpoint and actual bath temperature
- Temperature stability of ±0.05 °C at steady state, verified under standard ambient conditions (23 ± 2 °C, ≤60% RH)
- Robust stainless-steel inner bath tank (150 × 150 × 150 mm working volume) with corrosion-resistant finish and integrated overflow drain
- 1100 W high-efficiency heating element coupled with a low-noise, high-torque refrigeration compressor system for rapid cooldown and recovery
- Low-vibration motor-pump assembly (<0.5 µm peak-to-peak displacement), minimizing mechanical interference during sensitive optical or microgravimetric measurements
- Intuitive front-panel interface with dedicated keys for temperature ramping, hold functions, and safety lockout activation
- Over-temperature, low-level, and dry-run protection circuits compliant with IEC 61010-1:2010 safety standards
Sample Compatibility & Compliance
The YRDC-3006 accommodates a broad spectrum of immersion-based experimental configurations—including cuvette holders, probe fixtures, jacketed reactors, and flow-cell adapters—within its standardized 150 mm × 150 mm × 150 mm open bath cavity. Its design supports compatibility with common laboratory-grade heat-transfer fluids meeting ASTM D445 (kinematic viscosity) and ASTM D92 (flash point) specifications. While not certified for GMP or FDA-regulated production environments, the unit conforms to general-purpose laboratory safety and electromagnetic compatibility (EMC) requirements per EN 61326-1:2013 and is suitable for use in GLP-compliant research settings where traceable temperature calibration and routine verification are implemented by the end user.
Software & Data Management
The YRDC-3006 operates as a standalone instrument with no proprietary software dependency. All temperature parameters are managed locally via its embedded microcontroller. For laboratories requiring data logging or remote monitoring, the unit features an analog 0–5 V output signal proportional to measured bath temperature (calibrated to ±0.2 °C accuracy), compatible with third-party DAQ systems (e.g., National Instruments, LabVIEW-compatible hardware) and SCADA platforms. Optional RS-485 Modbus RTU communication interface (available upon request) enables integration into centralized facility monitoring networks, supporting basic command-and-control functions and timestamped temperature history export. Audit trails, electronic signatures, and 21 CFR Part 11 compliance are not natively supported; such functionality must be implemented externally via validated data acquisition infrastructure.
Applications
- Calibration and verification of temperature-sensitive analytical instruments (e.g., UV-Vis spectrophotometers, FTIR cells, differential scanning calorimeters)
- Controlled-temperature sample conditioning prior to chromatographic injection or rheological testing
- Stabilization of laser sources, photodetectors, and interferometric setups requiring thermal drift mitigation
- Long-duration enzymatic or polymerization kinetics studies under isothermal conditions
- Thermal cycling validation of material test specimens in mechanical testing labs
- Support of ASTM D2570 (low-temperature viscosity), ISO 3104 (petroleum products), and USP <797> environmental simulation protocols
FAQ
What types of circulating media are recommended for operation below 0 °C?
Ethylene glycol–water mixtures (e.g., 60:40 v/v) or synthetic heat-transfer oils rated for −40 °C minimum pour point are strongly recommended. Avoid aqueous solutions alone below freezing.
Is external recirculation possible with this model?
Yes—the unit includes inlet/outlet ports (G1/4″ BSP) and a built-in circulation pump capable of delivering up to 12 L/min at 0.2 bar pressure head, enabling closed-loop external cooling loops.
Does the YRDC-3006 support programmable temperature ramps?
Yes—it offers linear ramping functionality with adjustable rate (0.1–10.0 °C/min) and multi-step hold sequences (up to 9 segments), accessible via front-panel programming mode.
How often should calibration verification be performed?
Per ISO/IEC 17025 guidance, periodic verification using a NIST-traceable reference thermometer is advised at least daily for critical applications, or before each high-precision experiment.
Can the bath be operated without circulation?
No—the pump is integral to thermal uniformity and safety logic; disabling circulation triggers automatic shutdown to prevent localized overheating or refrigerant imbalance.
