Yuelian YL-2236 Programmable Environmental Chamber

Overview

The Yuelian YL-2236 Programmable Environmental Chamber is an industrial-grade climatic test system engineered for precise, repeatable simulation of temperature and humidity stress conditions across extended operational cycles. Designed in accordance with the fundamental principles of psychrometric control and forced-air thermal convection, the chamber maintains rigorous environmental fidelity through dual independent regulation of dry-bulb temperature and relative humidity—enabling accurate replication of real-world aging, storage, transport, and operational environments. Its architecture supports both static condition hold and dynamic profile execution, making it suitable for accelerated life testing, qualification validation, and routine quality assurance in regulated manufacturing settings. The chamber operates within a validated temperature range of −70 °C to +150 °C and a humidity range of 20–98 %RH (with optional low-humidity configuration down to 5 %RH), meeting core requirements for environmental stress screening (ESS) and reliability growth testing per MIL-STD-810 and JEDEC JESD22-A110.

Key Features

• Robust stainless-steel construction: Full SUS#304 interior and exterior housing with high-density polyurethane (PU) foam and rock wool insulation for thermal integrity and long-term corrosion resistance.
• Intelligent dual-loop climate control: Advanced PID algorithm with SSR/SCR bidirectional power modulation and integrated slope logic ensures stable ramping, overshoot suppression, and minimal steady-state deviation (±0.3 °C temp / ±2.5 %RH humidity).
• Modular refrigeration architecture: Single-stage hermetic air-cooled system for operation above −20 °C; two-stage cascade system with eco-friendly R404A/R507 refrigerants for sub-zero performance down to −70 °C.
• Self-sustaining humidification: Surface-evaporation humidifier with built-in deionized water generator, automatic refill from municipal supply, and redundant safety cutoffs (dry-run protection, overheat cutoff).
• High-visibility observation interface: Double-layer heated anti-fog viewing window with embedded defrost heater and LED illumination—designed to eliminate condensation and support in situ visual inspection under all operating conditions.
• Comprehensive programmability: 150 user-defined test programs, each supporting up to 1500 segments; nested loop capability (9999 × 999 cycles); five independent partial-cycle subsets for complex multi-phase protocols.
• Integrated diagnostics and safety: Real-time monitoring of 15 critical parameters—including compressor discharge pressure, refrigerant saturation, heater current, and sensor continuity—with timestamped fault logging and on-screen remediation guidance.

Sample Compatibility & Compliance

The YL-2236 accommodates a broad spectrum of physical specimens—from printed circuit boards and automotive ECUs to polymer films, pharmaceutical packaging, and aerospace fasteners—within internal volumes spanning 80 L to 800 L. Standard configurations include adjustable stainless-steel shelves, dual access ports (50 mm diameter), and removable floor casters for lab mobility. All models conform to mandatory electrical safety standards (IEC 61000-4, GB 4793.1) and environmental test method harmonization frameworks including ISO 16750-4 (road vehicles), ASTM D4332 (conditioning of plastics), IEC 60068-2 (environmental testing), and UL 1598 (luminaire qualification). Optional calibration documentation supports traceability to NIST or CNAS-accredited reference standards, facilitating GLP-compliant data generation and FDA 21 CFR Part 11–aligned audit readiness when paired with validated software interfaces.

Software & Data Management

The chamber’s embedded controller features a 7-inch capacitive touchscreen with bilingual (English/Chinese) UI, supporting intuitive program creation, real-time parameter visualization, and historical trend review. RS-232 serial communication enables direct integration with laboratory information management systems (LIMS) or SCADA platforms for centralized monitoring and automated report generation. Optional Ethernet expansion supports MODBUS TCP and OPC UA protocols, allowing seamless synchronization with enterprise MES environments. All logged data—including temperature/humidity setpoints, actual readings, alarm events, and cycle completion timestamps—is stored internally with battery-backed retention (>30 days) and exportable via USB mass storage in CSV format. Audit trails are maintained for all operator actions, parameter modifications, and firmware updates—meeting foundational requirements for data integrity under ALCOA+ principles.

Applications

• Electronics reliability: Thermal cycling of PCBAs, moisture sensitivity level (MSL) preconditioning per J-STD-020, and humidity bake-out validation.
• Automotive component qualification: Climate endurance testing of sensors, lighting modules, and infotainment housings per ISO 16750-4 and GMW15059.
• Materials science: Hygrothermal aging of composites, adhesives, and elastomers to assess dimensional stability, delamination onset, and mechanical property degradation.
• Pharmaceutical packaging: Accelerated stability studies of blister packs and HDPE containers under ICH Q1A(R3) and USP environmental conditioning guidelines.
• Quality assurance labs: Routine incoming inspection of raw materials (e.g., lithium-ion battery cells, optical lenses) against supplier-specified environmental tolerances.

FAQ

What is the standard warranty coverage for the YL-2236 chamber?
The unit includes a 24-month parts-and-labor warranty covering all structural components, refrigeration system, control electronics, and factory-calibrated sensors—excluding consumables such as humidifier wicks and desiccant filters.
Can the chamber be validated for GMP compliance?
Yes—when equipped with optional IQ/OQ documentation packages and operated with qualified third-party calibration services, the YL-2236 supports full 21 CFR Part 11–compliant validation for pharmaceutical and medical device manufacturing environments.
Is remote monitoring supported out-of-the-box?
Standard RS-232 connectivity allows local PC-based supervision; Ethernet-enabled remote access requires optional hardware module installation and configuration via Modbus TCP or custom API integration.
How is humidity controlled at low RH levels (e.g., below 20%RH)?
Low-humidity operation utilizes deep-cooling dehumidification combined with reheating and precise dry-air purging—achievable without external nitrogen supply in the optional low-RH configuration.
Are calibration certificates included with shipment?
A factory-as-found calibration report (traceable to national metrology institutes) is provided; full ISO/IEC 17025-certified calibration requires separate service engagement prior to delivery.