OK Xenon Arc Weathering Test Chamber OK-XD-150
| Brand | OK Instruments |
|---|---|
| Origin | Guangdong, China |
| Manufacturer Type | Direct Manufacturer |
| Product Category | Domestic |
| Model | OK-XD-150 |
| Xenon Lamp Power | 4 kW |
| Irradiance Range | ≤1200 W/m² |
| Light Cycle Timing | 1–999 hours/minutes/seconds (continuously adjustable) |
| Humidity Range (Light Cycle) | 20–75% R.H. |
Overview
The OK Xenon Arc Weathering Test Chamber OK-XD-150 is an engineered environmental simulation system designed to replicate the complex, multi-factor outdoor aging environment under controlled laboratory conditions. It employs a 4 kW air-cooled xenon arc lamp as its primary radiation source, generating a continuous spectral output spanning ultraviolet (290–400 nm), visible (400–700 nm), and near-infrared (700–1100 nm) wavelengths—closely matching natural solar irradiance at ground level. Unlike narrow-band UV sources, this full-spectrum capability enables physiologically relevant photodegradation mechanisms, including photooxidation, chain scission, and chromophore degradation in polymeric, organic, and composite materials. The chamber integrates precisely regulated temperature, relative humidity, and water spray systems to simulate synergistic stressors: thermal cycling, moisture absorption/desorption, condensation, and thermal shock induced by simulated rainfall. This holistic approach supports accelerated testing protocols where material failure modes—such as color shift (ΔE), gloss loss, chalking, cracking, embrittlement, or adhesion loss—are driven by combined photothermal-hygrometric exposure rather than UV dose alone.
Key Features
- High-fidelity xenon light source: 4 kW long-arc xenon lamp with selectable optical filters (Daylight and Window Glass types) compliant with ISO 4892-2 and ASTM G155 spectral requirements.
- Closed-loop irradiance control: Real-time monitoring via calibrated broadband radiometer; automatic lamp power adjustment maintains setpoint irradiance (e.g., 0.35–0.55 W/m² @ 340 nm or 40–65 W/m² @ 300–400 nm) within ±5% tolerance over lamp lifetime.
- Dual-temperature sensing architecture: Simultaneous measurement of black panel temperature (BPT, ASTM D7869) and standard black standard thermometer (BST), both traceable to NIST standards, ensuring surface thermal fidelity during irradiation.
- Independent humidity regulation: Steam-based humidification system with PID-controlled boiler delivers stable RH control from 20% to 75% R.H. during light cycles; dehumidification via mechanical refrigeration during dark/condensation phases.
- Programmable water cycle system: Deionized water spray with adjustable duration, frequency, and temperature (ambient to 40°C); integrated water purification module prevents nozzle clogging and sample contamination.
- Rotating sample drum: 360° motorized turntable ensures uniform angular exposure across all specimen surfaces; accommodates standard test panels (e.g., ISO 105-B02, ASTM D6695) and custom fixtures.
- Industrial-grade controller: 7-inch capacitive touchscreen HMI with embedded PLC; supports multi-step cyclic programs (e.g., 102 min light + 18 min spray + 120 min dark condensation) and real-time data logging per IEC 61508 SIL2 functional safety guidelines.
Sample Compatibility & Compliance
The OK-XD-150 accommodates rigid and flexible specimens up to 150 mm × 150 mm × 50 mm per position, with total drum capacity supporting up to 48 standard 75 mm × 150 mm coupons. It meets essential regulatory and industry-specific compliance frameworks: ISO 4892-2 (plastics), ASTM G155 (non-metallic materials), SAE J2527/J2412 (automotive exterior/interior), ASTM D6695 (coatings), GB/T 1865 (Chinese national standard for paint weathering), ISO 105-B02/B06 (textile colorfastness), and IEC 61215 (photovoltaic module qualification). All critical sensors—including irradiance, BPT, BST, and RH—are calibrated annually per ISO/IEC 17025 requirements. Optional audit trail and electronic signature modules support FDA 21 CFR Part 11 and GLP/GMP documentation integrity.
Software & Data Management
Built-in firmware records timestamped values for irradiance, chamber air temperature, BPT, BST, RH, spray status, and cycle phase every 10 seconds. Exportable CSV files include metadata (operator ID, test method, filter type, calibration dates) for traceability. Optional OK-WeatherLink software enables remote monitoring, alarm notification (SMS/email), comparative analysis across multiple test runs, and automated report generation aligned with ASTM E2044 annexes. Data encryption (AES-256) and role-based access control ensure secure handling in regulated environments.
Applications
- Automotive: Accelerated validation of OEM-spec exterior paints, PP/TPO bumpers, PVC instrument panel skins, EPDM seals, and PET seat fabrics per PV3929, GMW14124, or Toyota TSL1000.
- Coatings & Inks: Quantitative assessment of chalk resistance (ASTM D4214), gloss retention (ASTM D523), and color stability (ASTM D2244) in architectural acrylics, coil coatings, and automotive refinish systems.
- Polymers & Elastomers: Degradation profiling of HDPE geomembranes, PC glazing, silicone gaskets, and TPU films under cyclic UV/thermal/humidity stress.
- Textiles & Composites: Lightfastness evaluation of awning fabrics (ISO 105-B06), carbon fiber prepregs (ASTM D7264), and laminated safety glass interlayers.
- Photovoltaics: Backsheet yellowing (IEC TS 62788-7-2), encapsulant browning, and adhesion loss testing under IEC 61215-2 MQT03.
FAQ
What spectral filters are included with the OK-XD-150?
The standard configuration includes Daylight (Q/B) and Window Glass (B/FS40) borosilicate filters, certified per ISO 4892-2 Annex A.
Is deionized water mandatory for the spray system?
Yes. Conductivity must be ≤1 µS/cm to prevent scaling, nozzle erosion, and mineral deposition on test specimens.
How often must the xenon lamp and filters be replaced?
Lamp replacement is recommended after 1500 hours of operation; filters require replacement every 1000 hours or upon visible discoloration or transmittance drop >10% (measured with UV-VIS spectrophotometer).
Can the chamber operate unattended for extended cycles?
Yes. With uninterrupted power supply (UPS) integration and remote monitoring enabled, it supports continuous 30-day test sequences with automated fault detection and email alerts.
Does the system support third-party calibration services?
All sensors are compatible with accredited calibration laboratories meeting ISO/IEC 17025; OK Instruments provides calibration certificates with NIST-traceable reference standards.
