YueLian PW-CV Series Vacuum Environmental Test Chamber

Overview

The YueLian PW-CV Series Vacuum Environmental Test Chamber is an engineered solution for controlled low-pressure thermal testing—specifically designed to replicate high-altitude atmospheric conditions and evaluate product integrity under sustained sub-atmospheric stress. Operating on the principle of convective-free thermal exposure within a sealed, evacuated chamber, the PW-CV enables precise simulation of ambient pressures down to 11.6 kPa (equivalent to approximately 15,000 m altitude), while maintaining stable, uniform temperature profiles from ambient +10°C up to 200°C. This dual-parameter control—vacuum + temperature—is essential for safety validation of lithium-based batteries, electronic assemblies, polymer components, and sealed packaging systems, where outgassing, delamination, thermal runaway initiation, or pressure-induced mechanical failure must be assessed under standardized test conditions.

Key Features

• Robust chamber construction: Inner chamber fabricated from 6.0 mm thick SUS304 stainless steel—electropolished and fully welded—to ensure long-term corrosion resistance, dimensional stability, and vacuum integrity at elevated temperatures.
• Dual-layer tempered viewing window with laminated explosion-proof film, enabling real-time visual monitoring without compromising vacuum seal or operator safety during high-risk tests (e.g., battery thermal abuse).
• Double-seal door system: High-elasticity silicone gasket integrated between the chamber body and reinforced steel door, tested to maintain ≤11.6 kPa vacuum over extended dwell periods (>72 h) with minimal leakage rate (<0.5 Pa·m³/s).
• Dual-side radiant heating architecture: Independent high-stability heating elements mounted on left and right interior walls provide symmetrical thermal input, minimizing axial temperature gradients (±1.5°C uniformity across chamber volume per ASTM E2207).
• PID-driven microprocessor controller with programmable ramp-soak profiles, data logging capability (optional), and password-protected parameter locking—supporting audit-ready operation in GLP/GMP environments.
• Integrated mobility and setup readiness: Four heavy-duty locking casters, adjustable leveling feet, and pre-mounted vacuum pump interface (KF25 flange) enable rapid deployment and alignment in QC labs or certification testing facilities.

Sample Compatibility & Compliance

The PW-CV accommodates samples ranging from coin-cell batteries and PCB modules to medical device housings and aerospace-grade elastomers. Its internal geometry supports standard UN38.3 test configurations—including stacked cell arrays, insulated pouch cells, and encapsulated electronics—without obstructing vacuum flow paths. The chamber meets mechanical and operational prerequisites for UL 1642 (lithium battery safety), UL 2054 (household and commercial batteries), and UN Manual of Tests and Criteria Part III, Subsection 38.3 (transportation safety). While the unit itself is not certified as a complete test system, its performance envelope—pressure stability, temperature repeatability, and chamber material inertness—has been validated against the environmental conditioning requirements specified in these standards. Optional I/O ports support external data acquisition for traceable test reporting compliant with ISO/IEC 17025 documentation frameworks.

Software & Data Management

The embedded controller provides local setpoint configuration, real-time display of chamber pressure (kPa), temperature (°C), and elapsed time (H:M:S), with non-volatile memory storing up to 10 user-defined test programs. For regulated environments, optional RS485 Modbus RTU or Ethernet TCP/IP interfaces enable integration into centralized lab management systems (LIMS) or SCADA platforms. When paired with YueLian’s optional DataTrace Pro software (v3.2+), users gain CSV-exportable logs with timestamped vacuum decay curves, thermal soak profiles, and alarm event histories—including automatic detection of pressure deviation >±0.5 kPa or temperature excursion beyond ±2°C. All digital records support 21 CFR Part 11-compliant electronic signatures and audit trail generation when deployed on validated Windows OS workstations.

Applications

• Battery safety qualification: Altitude simulation per UN38.3 Section 38.3.1 (T.1–T.6), including storage, temperature cycling, and forced discharge under vacuum.
• Outgassing analysis for space-grade materials: Pre-conditioning of adhesives, conformal coatings, and composite substrates prior to TML/CVCM testing (per ASTM E595).
• Thermal aging of sealed electronics: Accelerated life testing of MEMS sensors, hermetic relays, and optoelectronic packages under combined thermal-vacuum stress.
• Pharmaceutical packaging validation: Evaluation of blister pack seal integrity and moisture barrier performance at reduced pressure and elevated temperature.
• Research-scale polymer processing: Solvent removal from hydrogels, vacuum-assisted resin transfer molding (VARTM) preform drying, and low-oxygen annealing of conductive polymers.

FAQ

What vacuum level does the PW-CV achieve, and how is it measured?
The chamber achieves a base pressure of ≤11.6 kPa (−0.116 MPa gauge) using the included rotary vane vacuum pump; pressure is monitored via a calibrated analog vacuum gauge with Class 1.6 accuracy per EN 837-1.
Is the chamber suitable for continuous operation at 200°C under vacuum?
Yes—the SUS304 chamber, high-temp gasketing, and dual-side heating design are rated for uninterrupted operation at 200°C and ≤11.6 kPa for durations up to 999 hours, provided ambient cooling and ventilation meet minimum airflow specifications (≥300 m³/h near exhaust port).
Can third-party vacuum pumps be connected?
Yes—the KF25 flange interface complies with ISO-KF standards, supporting direct coupling with compatible dry scroll, diaphragm, or turbomolecular pumps for enhanced ultimate vacuum or oil-free operation.
Does the PW-CV support automated test sequencing per UN38.3?
The base controller supports manual stage transitions; full automation (e.g., auto-start vacuum → heat → hold → vent) requires optional PLC add-on module or external sequencer integration via digital I/O signals.
What maintenance is required for long-term vacuum integrity?
Quarterly inspection of door gasket compression force and annual replacement of vacuum pump oil (if using supplied oil-lubricated pump); stainless steel chamber requires only IPA wipe-down—no passivation or re-coating needed under normal use.