OuKe Large-Scale Xenon Arc Weathering Test Chamber

Overview

The OuKe Large-Scale Xenon Arc Weathering Test Chamber is an engineered environmental simulation system designed for accelerated weathering evaluation of materials under controlled solar-spectrum irradiance. It employs a high-power, continuous-spectrum xenon arc lamp—calibrated to replicate the full spectral output of natural sunlight (290–2500 nm)—with optical filtering capability to isolate UV-A (315–400 nm), UV-B (280–315 nm), or full-spectrum exposure per ASTM G155, ISO 4892-2, and SAE J2527 standards. Unlike fluorescent UV systems, xenon arc technology delivers photometrically accurate irradiance distribution across UV, visible, and near-infrared bands, enabling correlation with real-world outdoor degradation mechanisms including photooxidation, chalking, color fading, and polymer chain scission. The chamber integrates independent thermal, humidity, and irradiance control subsystems to emulate diurnal cycling, dew formation, and solar loading conditions—critical for validating durability claims in automotive coatings, architectural sealants, geotextiles, and aerospace composites.

Key Features

• High-stability 40 W xenon lamp with ≥6000 h service life, supported by active thermal management and forced-air cooling to maintain spectral fidelity and lamp wall temperature stability
• Adjustable sample-to-lamp distance (50 mm standard) and 360° rotatable optical head enabling customizable irradiance geometry—including collimated parallel beam delivery with optional cold mirror optics
• Modular filter system compatible with quartz, borosilicate, and soda-lime glass filters; supports custom spectral cuts (e.g., Daylight-Q/B, Window Glass-Q/B) per ISO 4892-2 Annex A
• Dual independent climate control: PID-regulated heating via NiCr alloy resistive elements (RT+10°C to 70°C); stainless steel shallow-pan evaporative humidification (≥95% RH)
• Black panel thermometer (BPT) with dual-metal sensor for surface temperature monitoring per ASTM D7869; integrated into closed-loop irradiance compensation algorithm
• Programmable controller with LED display, SSR solid-state relays, and microprocessor-based P.I.D. logic for precise ramp/soak profiles and multi-segment cycling
• Comprehensive safety architecture: overtemperature cutoff, water-level interlock, ground-fault circuit interruption (GFCI), short-circuit protection, and overcurrent sensing

Sample Compatibility & Compliance

The chamber accommodates flat-panel specimens up to 600 × 600 mm (custom trays available) and supports standardized specimen mounting per ISO 4892-2 Clause 6.2 and ASTM G155 Section 7. All internal surfaces are electropolished stainless steel (AISI 316L) to prevent corrosion-induced contamination. Humidity control meets ISO 4892-2 humidity tolerance requirements (±3% RH above 80% RH). Irradiance uniformity across the test plane complies with ASTM G155 Class A specification (±15% deviation at 340 nm). System design conforms to IEC 61000-6-3 (EMC emissions) and IEC 61000-6-2 (immunity), with documentation supporting GLP-compliant validation protocols including IQ/OQ/PQ templates.

Software & Data Management

The integrated controller logs timestamped records of irradiance (W/m² @ 340 nm), black panel temperature (°C), chamber air temperature (°C), relative humidity (%RH), and runtime (h). Data export is supported via USB 2.0 to CSV format for traceability. Optional Ethernet interface enables remote monitoring and integration with LIMS platforms. Audit trail functionality satisfies FDA 21 CFR Part 11 requirements when paired with user access controls and electronic signature modules (sold separately). Calibration certificates for irradiance sensors and temperature/humidity probes are provided with NIST-traceable documentation.

Applications

• Accelerated aging of automotive interior trim, exterior paints, and headlamp lenses per SAE J2412 and GMW14124
• UV stability testing of PVC roofing membranes, EPDM elastomers, and geosynthetic clay liners (GCLs) per ASTM D4355 and ISO 18892
• Photostability assessment of pharmaceutical packaging films (e.g., blister foils) under ICH Q1B guidance
• Colorfastness validation of textile dyes and printed signage per ISO 105-B02 and AATCC TM16
• Weathering qualification of photovoltaic module encapsulants and backsheets per IEC 61215-2 MQT03

FAQ

What spectral filters are included standard with the chamber?
The base configuration includes a daylight-filtered quartz envelope (Daylight-Q). UV-B and window-glass filtered options are available as factory-installed accessories.
Is the system compliant with ISO 4892-2:2013 for xenon arc exposure?
Yes—the optical path, irradiance control range (0.35–1.20 W/m² @ 340 nm), and black panel temperature regulation meet all mandatory clauses of ISO 4892-2:2013.
Can the chamber operate unattended for extended cycles (e.g., 1000+ hours)?
Yes—continuous operation is supported with automatic water replenishment, thermal overload safeguards, and lamp-hour tracking with predictive maintenance alerts.
Does the controller support ramp-and-soak programming for simulating diurnal temperature/humidity cycles?
Yes—the programmable timer allows up to 99 segments with independent setpoints for irradiance, temperature, and humidity, including dwell times and transition rates.
What calibration documentation is supplied upon shipment?
Each unit ships with a factory calibration report for irradiance sensor (NIST-traceable), black panel thermometer, and humidity/temperature transducers, valid for 12 months from date of issue.