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 accelerate material degradation under controlled exposure to full-spectrum solar radiation, temperature, humidity, and water spray—mimicking real-world outdoor weathering conditions. It employs air-cooled long-arc xenon lamps calibrated to replicate the spectral power distribution of natural sunlight across 300–1200 nm, with precise irradiance control at two standard bandwidths (300–800 nm and 300–1200 nm). Unlike UV-only testers, this chamber delivers photobiological relevance for polymers, coatings, textiles, automotive interiors, and architectural materials by incorporating both UV and visible/NIR components critical to photo-oxidation, chalking, color fading, and mechanical embrittlement. The system operates in programmable light/dark cycles, enabling synchronized thermal, hygral, and photic stress application—essential for evaluating long-term durability per international weathering standards.

Key Features

• Full-spectrum xenon arc lamp source with integrated optical filtering to maintain spectral fidelity over lamp lifetime; filters are designed to emulate terrestrial solar irradiance (CIE No. 85, ISO 4892-2 Annex A).
• Independent black panel temperature (BPT) and chamber air temperature control—BPT range 40–85 °C ensures surface-specific thermal loading aligned with ASTM G151 practice.
• Dynamic humidity regulation with dual-range capability: up to 98 % RH during dark cycles (for condensation simulation) and 20–75 % RH during irradiation (to prevent dew formation on optics and specimens).
• Programmable water spray system with adjustable duration (1–999 min), frequency, and pressure (70–127 kPa); supports both intermittent misting and sustained rain simulation per ISO 4892-2 Clause 7.3.
• Flexible sample mounting options: dual-layer flat stainless steel mesh racks for static testing or a 500 mm diameter rotating drum (0–3 rpm) for uniform angular exposure—critical for non-planar or heterogeneous samples.
• Robust construction using SUS304 stainless steel interior and corrosion-resistant exterior; all electrical and optical components conform to IP54 ingress protection where applicable.
• Lamp replacement is tool-free and accessible from the front service panel; average operational life is rated at ~1500 hours under nominal irradiance conditions.

Sample Compatibility & Compliance

The OK-XD chamber accommodates diverse specimen geometries—including irregularly shaped parts—via its configurable rack system. Samples up to 100 × 100 × 100 cm (OK-XD-1000 model) can be tested without disassembly. All models meet essential requirements for regulatory conformance: temperature and humidity controllers are traceably calibrated to NIST-traceable references; irradiance sensors are spectrally matched and periodically verified against reference cells per ISO 4892-2 Annex C. The system supports full audit trails for GLP-compliant laboratories and may be validated for GMP environments when paired with documented IQ/OQ/PQ protocols. It satisfies test method prerequisites for ISO 4892-2, ASTM D529 (textiles), GB/T 16422-2 (plastics), and automotive OEM specifications such as GMW14124 and Ford CETP 00.00-L-467.

Software & Data Management

Equipped with a programmable touchscreen controller supporting multi-step test profiles—including ramp/soak sequences, irradiance modulation, and conditional triggers based on BPT or RH thresholds. Data logging records temperature (chamber and black panel), relative humidity, irradiance (W/m²), spray status, and elapsed time at user-defined intervals (minimum 1 min). Export formats include CSV and PDF reports compatible with LIMS integration. Optional Ethernet or RS485 interfaces enable remote monitoring and centralized fleet management. While the base controller does not include 21 CFR Part 11 compliance features (e.g., electronic signatures, audit trail encryption), third-party validation packages are available for regulated industries requiring FDA-aligned data integrity.

Applications

• Automotive: Accelerated aging of dashboards, seat fabrics, seals, and exterior trim under combined UV, heat, and moisture cycling.
• Coatings & Paints: Evaluation of gloss retention, chalking resistance, and adhesion loss per ASTM D4587 and ISO 11341.
• Textiles & Nonwovens: Colorfastness and tensile strength degradation assessment per ISO 105-B02 and AATCC TM16.
• Building Materials: Durability testing of roofing membranes, PVC siding, and sealants per ASTM D4329 and EN 1297.
• Photovoltaics: Module encapsulant yellowing and backsheet delamination screening under IEC 61215-relevant stress spectra.

FAQ

What spectral range does the xenon lamp cover, and how is it filtered?
The lamp emits broadband radiation from 290 nm to >2500 nm; optical filters limit output to 300–800 nm or 300–1200 nm, matching terrestrial solar irradiance profiles defined in ISO 4892-2.
Can the chamber operate without water spray?
Yes—spray function is fully programmable and may be disabled for dry-heat or UV-only exposure protocols.
Is black panel temperature measured or calculated?
It is directly measured using a thermocouple-integrated blackened metal panel mounted adjacent to the sample plane, per ASTM G151 and ISO 4892-2 definitions.
How often must calibration be performed?
Irradiance sensors require annual verification; temperature and humidity sensors should be checked before each qualification run or per internal QA schedule (typically quarterly).
Are spare lamps and filters supplied with the system?
One spare lamp and one set of primary optical filters are included as standard; additional consumables are available as part numbers aligned with lamp wattage and model series.