Yuelian YL-2236 Programmable Temperature and Humidity Environmental Test Chamber
| Brand | Yuelian |
|---|---|
| Origin | Guangdong, China |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | YL-2236A–YL-2236F (6 variants) |
| Interior Dimensions (W×H×D) | 40×50×40 cm to 100×100×100 cm |
| Exterior Dimensions (W×H×D) | 110×136×71 cm to 180×196×123 cm |
| Capacity | 80 L to 1000 L |
| Temperature Range | −70 °C to +150 °C |
| Humidity Range | 5 %RH to 98 %RH (custom low-humidity option available) |
| Temperature Uniformity | ±0.5 °C |
| Humidity Uniformity | ±3 %RH |
| Temperature Stability | ±0.3 °C |
| Humidity Stability | ±2.5 %RH |
| Heating Rate | −40 °C → 100 °C in approx. 45 min |
| Cooling Rate | 20 °C → −70 °C in approx. 90 min |
| Control System | 120 programs × 1200 segments, 999 cycles, PID + SSR/SCR bidirectional output, RS-232/RS-485 interface |
| Construction | Full SUS#304 stainless steel interior & exterior |
| Insulation | Rockwool + rigid polyurethane foam |
| Refrigeration | Single-stage air-cooled system (≥ −20 °C) |
| Humidification | Surface evaporation type with dry-run and overheat protection |
| Dehumidification | Refrigerant-based latent heat removal |
| Safety | 15-point fault detection, independent electronic overtemperature protector, compressor overload, power failure, and temperature limit safeguards |
Overview
The Yuelian YL-2236 Programmable Temperature and Humidity Environmental Test Chamber is an industrial-grade climatic simulation system engineered for precision stability, long-term repeatability, and compliance-critical testing environments. It operates on the principle of balanced heating–cooling–humidification–dehumidification control, utilizing a dual-mode refrigeration architecture and platinum-resistance temperature sensors (PT100) to maintain rigorous thermal and hygrometric conditions across wide operational ranges. Designed for qualification and reliability testing per international standards—including ISO 16750-4 (road vehicles), IEC 60068-2-1/2/14/30, ASTM D4332, and GB/T 2423 series—the YL-2236 supports accelerated aging, environmental stress screening (ESS), and preconditioning protocols essential for electronics, automotive components, pharmaceutical packaging, and polymer-based materials.
Key Features
- Multi-tier programmability: Supports up to 120 user-defined test programs, each comprising up to 1200 individual segments; enables complex ramp-soak-step profiles with seamless transitions and nested loop structures (up to 9999 × 999 cycles).
- Intelligent PID control logic with bidirectional SSR/SCR output and slope-based rate limiting—ensures minimal overshoot during rapid thermal transitions and sustained humidity accuracy under dynamic load conditions.
- Full stainless-steel construction (SUS#304) for interior chamber, door, and structural frame—resists corrosion from high-humidity exposure, saline mist, or chemical vapor ingress during extended test durations.
- Dual-stage refrigeration system: Air-cooled, hermetically sealed compressors configured in cascade arrangement for stable operation down to −70 °C; single-stage configuration optimized for efficiency between −20 °C and +150 °C.
- Surface-evaporation humidification system with integrated water-level monitoring, auto-shutoff on dry-run, and thermal cutoff—eliminates mineral buildup and ensures consistent RH delivery without ultrasonic dispersion artifacts.
- Comprehensive safety architecture: 15 independent fault-detection channels monitor refrigerant pressure, heater current, chamber temperature deviation, door interlock status, insulation resistance, and power integrity—triggering audible/visual alarms and controlled shutdown upon anomaly detection.
- Touch-enabled LCD interface with bilingual (English/Chinese) GUI, real-time curve plotting, and embedded diagnostics history—enables immediate verification of profile fidelity and root-cause analysis of operational deviations.
Sample Compatibility & Compliance
The YL-2236 accommodates diverse sample geometries and mass loads through six standardized internal volume configurations (80 L to 1000 L), all featuring adjustable stainless-steel shelves, cable ports with silicone gaskets, anti-fog viewing windows, and internal LED illumination. Its temperature uniformity (±0.5 °C) and humidity uniformity (±3 %RH) meet the spatial homogeneity requirements of ISO 17025-accredited laboratories performing environmental validation. The system complies with electromagnetic compatibility (EMC) per EN 61326-1 and safety standards per IEC 61010-1. Optional CF card data logger (256 MB) provides audit-ready, timestamped records compliant with FDA 21 CFR Part 11 for electronic signatures and GLP/GMP traceability. Calibration certificates traceable to NIM (National Institute of Metrology, China) or UKAS-accredited labs are available upon request.
Software & Data Management
Standard RS-232 and optional RS-485 interfaces enable integration into centralized lab management systems via Modbus RTU or custom SCPI-like command sets. The built-in controller logs all setpoints, actual values, alarm events, and system statuses with millisecond-level timestamps. Export formats include CSV and XML for post-processing in MATLAB, Python (Pandas), or LIMS platforms. Remote supervision is supported via Ethernet-to-serial gateways; no proprietary software installation is required—configuration and monitoring can be performed using standard terminal emulators or web-based dashboards. All firmware updates are delivered as signed binary packages with version rollback capability and checksum verification.
Applications
- Electronics: Thermal cycling of PCBAs, moisture sensitivity level (MSL) testing per J-STD-020, solder paste shelf-life validation.
- Automotive: Climate endurance of infotainment displays, battery module thermal shock testing, sealant adhesion under cyclic humidity.
- Pharmaceuticals: Stability chamber qualification (ICH Q1A–Q5C), packaging permeability assessment (blister foil, HDPE bottles), excipient hygroscopicity profiling.
- Materials Science: Polymer crystallinity shift analysis, composite delamination onset under combined thermal/hygrometric stress, coating adhesion loss kinetics.
- Quality Assurance: Incoming inspection of raw materials (e.g., lithium-ion cathode powders), final product burn-in at elevated humidity, accelerated corrosion testing (ASTM B117 adaptation).
FAQ
What temperature and humidity ranges are achievable across all YL-2236 variants?
All models support −70 °C to +150 °C and 5 %RH to 98 %RH; low-humidity capability (≤5 %RH) requires optional desiccant-assisted dehumidification module.
Is the system suitable for GMP-regulated environments?
Yes—when equipped with CF data logger and configured with audit trail, electronic signature, and role-based access control (via external HMI), it meets FDA 21 CFR Part 11 and EU Annex 11 requirements.
How is calibration traceability maintained?
Each unit ships with factory calibration report referencing PT100 sensor uncertainty (±0.15 °C) and capacitive RH sensor accuracy (±2 %RH @ 25 °C, 50 %RH); third-party ISO/IEC 17025 calibration services are available.
Can the chamber operate continuously for 30+ days?
Yes—designed for unattended 24/7 operation with redundant safety circuits, automatic defrost sequencing, and predictive maintenance alerts based on compressor runtime and refrigerant pressure trends.
What documentation is provided for regulatory submissions?
IQ/OQ protocols, risk assessment (FMEA), URS alignment matrix, and FAT/SAT reports are supplied; full DQ documentation package available under NDA.
