Boxun CY Series Advanced Oil Circulating Bath

Overview

The Boxun CY Series Advanced Oil Circulating Bath is a precision-engineered thermostatic system designed for stable, uniform, and controllable heating of heat-transfer fluids—primarily silicone oil or high-temperature mineral oils—in laboratory and industrial R&D environments. Operating on the principle of forced convection via dual-mode circulation (internal and external), the CY bath maintains thermal equilibrium across its stainless-steel working chamber using PID-controlled resistive heating elements and high-efficiency insulation. Its operational range extends from ambient temperature up to 300 °C, making it suitable for applications requiring elevated thermal stability beyond standard water baths—such as polymer curing, viscosity calibration of high-temperature fluids, thermal aging studies, and sensor calibration under ISO/IEC 17025-compliant conditions. Constructed from corrosion-resistant 304 stainless steel and featuring a compact benchtop footprint, the CY series balances mechanical robustness, energy efficiency, and long-term reliability in regulated laboratory workflows.

Key Features

• Precision temperature control with ±0.1 °C stability and ±0.1 °C uniformity across the entire bath volume—validated per ASTM E1137/E1142 protocols for liquid-bath temperature uniformity testing.
• Dual-circulation architecture: High-flow internal pump (≥8 L/min) ensures rapid thermal equilibration within the bath; externally accessible fluid ports (OD 10 mm / ID 8 mm) support closed-loop external heating of reactors, jackets, or analytical instrumentation.
• LED or LCD digital display options: Dual-window LED displays show both setpoint and real-time measured temperature (0.1 °C resolution); optional LCD touchscreen interface offers 0.01 °C resolution and intuitive parameter navigation.
• Temperature offset correction function enables traceable calibration adjustment without hardware modification—supporting GLP documentation requirements.
• High-density polyurethane insulation minimizes thermal loss, enabling extended unattended operation while maintaining low power consumption relative to thermal output.
• Benchtop design with optimized footprint-to-volume ratio: CY20(A), CY30(A), and CY50(A) models accommodate 20 L, 30 L, and 50 L working capacities respectively, each engineered for structural rigidity and vibration-damped operation.

Sample Compatibility & Compliance

The CY Series is compatible with a wide range of thermally stable organic and synthetic oils—including Dow Corning PMX-200, Shell Heat Transfer Oil S2, and Marlotherm SH—within its specified 300 °C upper limit. It is not intended for aqueous solutions above 100 °C due to vapor pressure and oxidation risks. All units comply with IEC 61010-1:2010 safety standards for laboratory electrical equipment and meet CE marking requirements for electromagnetic compatibility (EMC) and low-voltage directive (LVD) conformity. The stainless-steel tank and fluid pathways are passivated per ASTM A967 to ensure resistance to thermal degradation and chemical exposure during repeated use in pharmaceutical QC, materials science, and environmental testing labs.

Software & Data Management

While the base CY model operates via standalone front-panel controls, optional RS485 or USB interfaces enable integration with LabVIEW™, MATLAB®, or custom SCADA systems for remote monitoring and data logging. When connected, temperature profiles, setpoint history, and alarm events can be timestamped and exported in CSV format—supporting audit trails required under FDA 21 CFR Part 11 for electronic records in GMP-regulated environments. Firmware supports configurable alarm thresholds (high-temp, low-level, sensor fault), automatic shutdown on overtemperature, and password-protected parameter editing to preserve method integrity.

Applications

• Calibration of thermocouples, RTDs, and infrared sensors against NIST-traceable references at fixed elevated temperatures.
• Thermal preconditioning of composite resins, adhesives, and elastomers prior to mechanical or rheological characterization.
• Stabilization of optical components (e.g., laser diodes, interferometers) requiring sub-0.1 °C thermal drift control.
• Supporting ASTM D445 (kinematic viscosity), D86 (distillation), and ISO 3104 test methods where precise oil-bath immersion is mandated.
• External circulation to thermostatically control jacketed glass reactors, rotary evaporators, or HPLC column ovens in synthetic chemistry and process development labs.

FAQ

What is the maximum recommended operating temperature for continuous use?
The CY Series is rated for continuous operation up to 300 °C when filled with appropriate high-temperature heat-transfer oil—provided ambient ventilation meets minimum clearance requirements (≥15 cm on all sides) and oil level remains above the heater element.
Can the CY bath be used with water instead of oil?
Water may be used only below 100 °C and strictly for short-duration applications; prolonged use near boiling point accelerates corrosion and compromises long-term temperature stability. For aqueous work, Boxun’s CW-series water baths are recommended.
Is external circulation flow rate adjustable?
The built-in circulation pump delivers a fixed minimum flow of ≥8 L/min; flow modulation requires an inline needle valve or external variable-speed pump installed in the external loop.
Does the CY series support validation documentation (IQ/OQ/PQ)?
Yes—factory-generated calibration certificates (traceable to national standards), user manuals with verification procedures, and optional IQ/OQ protocol templates are available upon request for GxP-aligned installations.
How often should the heat-transfer oil be replaced?
Oil replacement interval depends on usage frequency, peak temperature, and oxygen exposure; typical service life ranges from 6–12 months under continuous 250–300 °C operation. Visual inspection for darkening, sediment, or increased viscosity is advised prior to each major experiment.