Xenon Arc Weathering Test Chamber OK-XD Series

Overview

The OK-XD Series Xenon Arc Weathering Test Chamber is an engineered environmental simulation system designed to replicate the photodegradative effects of natural sunlight, heat, and moisture on polymeric, textile, automotive, coating, and architectural materials. It employs a long-arc, air-cooled xenon lamp as its primary radiation source—selected for its spectral output closely matching terrestrial solar irradiance (AM1.5G) across the critical 300–800 nm UV–visible band and extending into the near-infrared (up to 1200 nm). Unlike mercury-vapor or fluorescent UV sources, xenon arc lamps deliver full-spectrum irradiation, enabling realistic assessment of photooxidation, chalking, color fading, gloss loss, cracking, and embrittlement under controlled laboratory conditions. The chamber integrates precise black panel temperature control, programmable relative humidity cycling, and calibrated broadband irradiance monitoring to ensure repeatability and traceability in accelerated weathering protocols.

Key Features

• Full-spectrum xenon arc illumination with optical filtering to emulate daylight exposure (ISO 4892-2 compliant spectral distribution)
• Independent control of chamber temperature (0–150 °C), black panel temperature (40–85 °C), and relative humidity (20–98% RH) across light/dark cycles
• Programmable water spray system with adjustable duration (1–999 min), frequency, and pressure (70–127 kPa) to simulate dew, rain, and thermal shock
• Modular sample mounting options: dual-layer flat mesh racks for irregularly shaped specimens or a 500 mm diameter rotating turntable (0–3 rpm) for uniform exposure
• SUS304 stainless steel interior construction with corrosion-resistant exterior (stainless or powder-coated steel) for long-term operational integrity
• Integrated broadband radiometer with real-time irradiance feedback and automatic lamp power compensation to maintain target intensity (e.g., 550 W/m² @ 300–800 nm or 1000 W/m² @ 300–1200 nm)
• Lamp replacement designed for field serviceability—no specialized tools required; typical lamp life: ~1500 hours at nominal irradiance output

Sample Compatibility & Compliance

The OK-XD chamber accommodates diverse specimen geometries—from rigid panels and flexible films to three-dimensional components—via its configurable rack system. Its internal dimensions (ranging from 50×50×40 cm to 100×100×100 cm) support custom fixture integration for industry-specific test configurations. The system complies with major international weathering standards including ISO 4892-2 (xenon-arc methods), ASTM D529 (textile colorfastness), GB/T 16422-2 (Chinese national standard for plastics), and GB/T 8427 (textile blue wool scale evaluation). All control parameters—including irradiance, temperature, humidity, and spray timing—are logged with timestamped records suitable for GLP/GMP audit trails and FDA 21 CFR Part 11–compliant data management when paired with optional software modules.

Software & Data Management

Standard operation utilizes a high-resolution touchscreen HMI with intuitive menu navigation, multi-step program storage (≥100 user-defined test profiles), and real-time graphing of irradiance, temperature, and humidity. Optional PC-based software enables remote monitoring, automated report generation (PDF/CSV), alarm logging, and export of raw sensor data for statistical analysis. All recorded parameters are time-stamped and stored internally with battery-backed memory retention. Data integrity safeguards include write-protected archive mode, user-level access controls, and electronic signature support for regulated environments requiring traceable validation documentation.

Applications

• Automotive interior/exterior material qualification (dashboards, trim, seals, coatings)
• Textile and leather colorfastness testing per ISO 105-B02 and AATCC TM16
• Polymer stabilization evaluation (PP, PE, PVC, ABS) under UV/thermal/humidity stress
• Architectural cladding and roofing membrane durability assessment
• Printing ink and pigment stability screening for outdoor signage
• Quality assurance of solar panel encapsulants and backsheet materials
• Research into photostabilizer efficacy and degradation kinetics

FAQ

What spectral ranges does the OK-XD chamber cover, and how is irradiance calibrated?
The chamber delivers irradiance across 300–800 nm (550 W/m² ±10%) and 300–1200 nm (1000 W/m² ±10%), measured using a NIST-traceable broadband radiometer integrated into the optical path.
Can the chamber operate without water spray?
Yes—the spray function is fully programmable and may be disabled for dry-heat or UV-only exposure protocols.
Is black panel temperature measurement included as standard?
Yes—each unit includes a calibrated black panel sensor conforming to ISO 4892-2 requirements for surface temperature monitoring.
How is humidity controlled during dark cycles?
Humidity is actively maintained up to 98% RH during dark periods via integrated steam humidification and precision PID-controlled dehumidification.
Are custom chamber sizes available?
Yes—OK Instruments offers engineering consultation and OEM design services for non-standard internal volumes and fixture configurations.