OK OK-STH-12m2.0100 Walk-in LED Environmental Test Chamber
| Brand | OK |
|---|---|
| Origin | Guangdong, China |
| Manufacturer Type | Direct Manufacturer |
| Product Origin | Domestic (China) |
| Model | OK-STH-12m2.0100 |
| Internal Dimensions (D×W×H) | 3000 × 2000 × 2000 mm |
| Temperature Range | −40 °C to +150 °C |
| Temperature Uniformity | ±2 °C |
| Temperature Control Accuracy | ±1 °C |
| Ramp Rate | +3 °C/min (heat-up), −1 °C/min (cool-down) |
Overview
The OK OK-STH-12m2.0100 Walk-in LED Environmental Test Chamber is a large-scale, precision-engineered walk-in environmental test system specifically designed for reliability validation of LED-based semiconductor devices, luminaires, and optoelectronic assemblies under controlled thermal and hygrothermal stress conditions. Built upon fundamental principles of psychrometric air handling and closed-loop PID-regulated thermodynamic control, the chamber enables reproducible simulation of static and dynamic environmental profiles—including constant humidity-temperature exposure, temperature-humidity cycling, and rapid thermal transitions—required for accelerated life testing (ALT), qualification per IEC 60068-2 series, and design verification of lighting systems deployed in harsh climatic zones.
Key Features
- Structural integrity: 150–200 mm thick polyurethane or rock wool metal sandwich panels with Class A fire rating (GB 8624), integrated vapor barrier and seamless welded joints to minimize thermal bridging and moisture ingress.
- High-performance air handling: Dedicated air treatment unit (ATU) incorporating scroll compressors, high-efficiency EC fans, multi-stage filtration (G4 + F7), and dual-mode humidity control—combining chilled coil dehumidification with optional rotary desiccant wheel for low-RH capability down to 20% RH.
- Flexible thermal management: Electric heating banks with over-temperature cut-off; steam or high-pressure micro-mist humidification systems calibrated to ±2.5% RH stability; water-cooled or air-cooled chiller integration supported for continuous operation at extreme low-temperature setpoints.
- Advanced control architecture: Industrial-grade PLC (Siemens S7-1200 or equivalent) coupled with SCADA HMI interface, supporting adaptive PID tuning, multi-zone temperature mapping, real-time deviation monitoring, and alarm-triggered safety interlocks (e.g., door-open shutdown, condensate overflow cutoff).
- Comprehensive safety infrastructure: Explosion-proof LED lighting (Class II, Division 2), emergency exhaust ventilation (≥6 air changes/hour), redundant temperature sensors, audible/visual alarms, panic-release door mechanism, and integrated fire/smoke detection linked to building management systems (BMS).
Sample Compatibility & Compliance
The chamber accommodates full-size LED luminaires, PCB-mounted LED arrays, driver modules, and complete outdoor lighting fixtures up to 1.8 m in height. Its internal volume (12 m³ nominal) supports batch-level testing aligned with industry-standard sample groupings defined in LM-80, TM-21, and IESNA RP-27. The system complies with GB/T 10586 (Wet Heat Test Chambers), GB/T 2423.1–2423.2 (Environmental Testing – Part 2), and ISO 16750-4 (Road Vehicles – Environmental Conditions). Optional calibration traceability to NIM (National Institute of Metrology, China) and third-party validation reports are available for GLP/GMP-regulated laboratories.
Software & Data Management
Embedded control software provides intuitive program editing (up to 99 segments per profile), real-time data logging (1-second resolution), and CSV export for post-test analysis. Audit trail functionality meets FDA 21 CFR Part 11 requirements when configured with user authentication, electronic signatures, and immutable event logs. Remote access via secure HTTPS or industrial VPN enables off-site supervision, predictive maintenance alerts, and integration with enterprise LIMS or MES platforms through OPC UA or Modbus TCP protocols.
Applications
- Accelerated aging of phosphor-converted white LEDs under high-humidity, elevated-temperature (HAST-like) conditions.
- Thermal shock evaluation of COB (Chip-on-Board) packages using programmable ramp-and-soak cycles between −40 °C and +150 °C.
- Condensation resistance testing per IEC 60529 IPX4/IPX5 protocols for outdoor-rated streetlights and signage.
- Long-term stability assessment of silicone encapsulants and secondary optical elements under cyclic RH loading (20–98% RH).
- Qualification testing of smart LED drivers against automotive-grade thermal cycling standards (e.g., AEC-Q100 Grade 2).
FAQ
What is the maximum load capacity for internal equipment and personnel?
The reinforced floor structure supports distributed loads up to 1,200 kg/m² and allows safe entry by two technicians with standard PPE.
Can the chamber be integrated into an existing facility’s chilled water loop?
Yes—water-cooled condenser options support connection to facility-supplied 7–12 °C chilled water at 3–5 bar pressure, with flow rate matched to chamber cooling demand.
Is remote calibration verification possible without on-site service visits?
The system includes built-in reference sensor ports and automated self-diagnostic routines; NIST-traceable portable calibrators can be used for field verification of temperature and humidity sensors.
Does the controller support custom test profiles compliant with JEDEC JESD22-A110?
Yes—the programming interface accepts user-defined step, ramp, and dwell parameters, including non-linear ramp rates and conditional branching based on sensor feedback.
What documentation is provided for regulatory audits?
Factory acceptance test (FAT) report, IQ/OQ documentation templates, electrical safety certification (GB 4793.1), and EMC compliance statement (GB/T 18268.1) are included with delivery.
