Yarong YRDC-1006 Vertical Cryogenic Circulating Thermostat

Overview

The Yarong YRDC-1006 Vertical Cryogenic Circulating Thermostat is a precision temperature control system engineered for laboratory applications requiring stable, reproducible thermal environments across a wide operational range (−10 °C to 100 °C). It operates on a dual-mode thermoregulation principle: resistive heating combined with vapor-compression refrigeration, enabling rapid and symmetric thermal response during both heating and cooling cycles. The unit integrates a microprocessor-based PID controller with auto-tuning capability, ensuring optimal dynamic compensation for load variations—critical when interfacing with external equipment such as spectrophotometer cells, viscometer jackets, or reaction calorimeters. Its vertical architecture maximizes floor-space efficiency while maintaining structural rigidity and thermal isolation integrity. The stainless-steel 304 bath chamber, impeller, and internal circulation manifold are corrosion-resistant and compatible with aqueous and organic heat-transfer fluids—including deionized water and anhydrous ethanol—supporting both low-temperature cryostatic operation and high-temperature stability without degradation.

Key Features

• High-stability temperature control with ±0.02 °C fluctuation (measured at 25 °C using calibrated PT100 sensor and NIST-traceable reference)
• Dual digital display: independent windows for setpoint and real-time bath temperature, eliminating operator ambiguity
• Hermetically sealed, low-noise compressor paired with optimized condenser airflow design for consistent sub-zero performance
• Internal + external dual-circulation mode: supports closed-loop temperature regulation of the bath and open-loop delivery to auxiliary devices via 8 L/min flow capacity
• Foldable side handles and reinforced base chassis facilitate safe relocation in shared lab environments
• Open-circuit sensor detection logic alerts users immediately upon PT100 disconnection or signal loss, preventing unmonitored thermal drift
• Stainless-steel 304 construction throughout fluid-contact surfaces ensures long-term compatibility with aggressive solvents and repeated thermal cycling

Sample Compatibility & Compliance

The YRDC-1006 accommodates standard laboratory vessels up to 150 mm cube dimensions and supports immersion of probes, sensors, and sample holders with minimal thermal lag. Its bath geometry and forced convection ensure uniform thermal distribution within ±0.1 °C across the working volume—validated per ISO 17025 calibration protocols using multi-point platinum resistance thermometers. While not certified to IEC 61010-1 or UL 61010B as a standalone medical device, the unit complies with general laboratory safety requirements for Class II electrical equipment operating under ambient conditions (IEC 60529 IP20 enclosure rating). Its temperature stability profile meets typical qualification criteria for ASTM E2251 (Standard Specification for Liquid-in-Glass Thermometers) and USP (Thermal Analysis), making it suitable for QC/QA workflows in pharmaceutical, materials science, and analytical chemistry laboratories operating under GLP or GMP-aligned documentation practices.

Software & Data Management

The YRDC-1006 operates autonomously via its embedded microcontroller interface and does not require proprietary software for basic function execution. However, optional RS232/RS485 communication ports (available upon request) enable integration into centralized lab management systems for remote monitoring, event logging, and audit-trail generation. When connected to compliant SCADA or LIMS platforms, the thermostat can transmit timestamped temperature readings, alarm states (e.g., sensor fault, over-temperature), and operational status—supporting 21 CFR Part 11–aligned electronic record retention where configured with appropriate user access controls and electronic signature modules. All firmware updates are delivered via secure USB interface with version-locking verification to maintain configuration integrity.

Applications

• Calibration of temperature-sensitive analytical instruments (e.g., HPLC column ovens, FTIR sample compartments, DSC reference cells)
• Stabilization of optical components during laser spectroscopy or interferometry experiments
• Controlled-rate cooling/heating of polymer melts, colloidal dispersions, or enzymatic reaction mixtures
• External temperature conditioning of rotary evaporators, vacuum jacketed reactors, or electrochemical cells
• Long-duration stability testing of reference standards, biosensors, and calibration artifacts per ISO/IEC 17025 Clause 5.10

FAQ

What heat-transfer fluids are compatible with the YRDC-1006?

Deionized water and anhydrous ethanol are validated for full temperature range operation. Ethylene glycol–water mixtures may be used below 0 °C but require viscosity and freezing-point validation prior to deployment.
Can the unit maintain temperature stability during external circulation?

Yes—the integrated 8 L/min pump maintains ±0.05 °C stability at the bath outlet under nominal flow resistance (<0.5 bar backpressure) and ambient load conditions.
Is the temperature sensor traceable to national standards?

The factory-installed PT100 sensor is calibrated against NIST-traceable references; full calibration certificates (including uncertainty budgets) are available as an optional add-on service.
Does the unit support programmable ramp-and-soak profiles?

No—this model implements single-setpoint PID control only. For time-based thermal profiling, consider the YRDC-1015 series with optional programmable controller module.
What maintenance intervals are recommended?

Compressor oil and refrigerant levels should be verified annually by authorized service personnel; stainless-steel bath cleaning is advised after each solvent change using non-chlorinated detergents.