OK UV Aging Test Chamber OK-UV-290.0.0
| Brand | OK Instruments |
|---|---|
| Origin | Guangdong, China |
| Manufacturer Type | Direct Manufacturer |
| Product Category | Domestic |
| Model | OK-UV-290.0.0 |
| Humidity Range | ≥95% RH (in-chamber actual value) |
| Lamp Power | 40 W per tube |
| Irradiance Range | 0.72 W/m² |
| Exposure Time Setting | 1–9999 h (adjustable) |
| Illumination Temperature Range | RT to 70 °C |
| UV Wavelength Range | 280–400 nm |
| Chamber Internal Dimensions (L×W×H) | 1170 × 400 × 400 mm |
Overview
The OK UV Aging Test Chamber OK-UV-290.0.0 is a purpose-engineered environmental test system designed to accelerate material degradation through controlled exposure to ultraviolet radiation, elevated temperature, and high-humidity or condensation cycles. It operates on the principle of fluorescent ultraviolet (UV) irradiation—specifically simulating the short-wavelength UV portion (280–400 nm) of terrestrial solar spectrum—to induce photochemical reactions responsible for polymer chain scission, pigment fading, surface oxidation, and loss of mechanical integrity. Unlike full-spectrum xenon arc systems, this chamber prioritizes reproducible, high-intensity UV stress under thermally and hygroscopically regulated conditions, enabling rapid assessment of UV resistance in accordance with internationally recognized accelerated weathering standards including ASTM G154, ISO 4892-3, and GB/T 14522.
Key Features
- Fluorescent UV lamp array (UVA-type spectral output) delivering stable irradiance at 0.72 W/m², calibrated to peak emission within the 280–400 nm band;
- Precise thermal control system maintaining illumination temperature from ambient (RT) up to 70 °C with ±2 °C uniformity across test zone;
- High-humidity capability achieving ≥95% RH in chamber interior, supporting both humidity hold and condensation cycle modes;
- Digital touchscreen controller enabling programmable multi-step exposure sequences—e.g., UV irradiation + condensation, UV + dark + high humidity—with time resolution down to 1 minute and total runtime up to 9999 hours;
- Robust stainless-steel internal chamber (1170 × 400 × 400 mm) optimized for UV reflectivity and corrosion resistance;
- Integrated safety architecture featuring over-temperature cutoff, low-water-level detection, and UV interlock door switch to prevent operator exposure during operation.
Sample Compatibility & Compliance
The OK-UV-290.0.0 accommodates flat or rigid specimens up to 1100 mm in length, suitable for coated panels, plastic sheets, textile swatches, rubber strips, and composite laminates. Its design aligns with sample mounting requirements defined in ASTM D4329, ISO 11507, and JIS K 5600-7-8. All operational parameters—including irradiance intensity, black standard temperature (BST), and relative humidity—are traceable to NIST-traceable reference instruments. The system supports GLP-compliant data logging when integrated with optional external validation hardware, and its control firmware allows audit-ready event logging required under FDA 21 CFR Part 11 for regulated R&D environments.
Software & Data Management
Equipped with an embedded industrial-grade HMI controller, the chamber records real-time values for UV irradiance, chamber temperature, humidity, and elapsed exposure time. Data export is supported via USB interface in CSV format for post-test analysis in Excel or statistical software (e.g., JMP, Minitab). Optional PC-based software (sold separately) enables remote monitoring, automated report generation with timestamped parameter trends, and compliance with ISO/IEC 17025 documentation requirements. Calibration certificates for irradiance sensors and temperature/humidity probes are provided upon installation and recommended annually per ISO/IEC 17025 Clause 6.5.
Applications
- Automotive: Evaluation of dashboard trim, exterior paint systems, headlamp lenses, and EPDM seals under cyclic UV/condensation stress;
- Construction materials: Durability screening of PVC window profiles, silicone sealants, bituminous membranes, and architectural coatings;
- Plastics & elastomers: Quantification of yellowing index (ASTM E313), gloss retention (ASTM D523), and tensile property decay after UV exposure;
- Textiles & outdoor gear: Assessment of colorfastness to light (AATCC TM16, ISO 105-B02) and fabric strength retention;
- Photovoltaic components: Backsheet adhesion stability and encapsulant discoloration testing per IEC 61215-2 MQT10;
- Adhesives & sealants: Cohesive failure onset and interfacial delamination kinetics under humid UV aging.
FAQ
What UV lamp type does the OK-UV-290.0.0 use, and is it replaceable?
It utilizes standard 40 W fluorescent UV tubes compliant with UVA-340 spectral output specifications; lamps are user-replaceable and require recalibration of irradiance sensor after each replacement.
Does the chamber support condensation cycling per ASTM G154 Cycle 1?
Yes—the system implements automatic condensation mode by cooling the specimen surface below dew point while maintaining high ambient humidity, replicating nocturnal dew formation.
Can irradiance be monitored in real time during testing?
Yes—a calibrated UV radiometer is integrated into the chamber wall, feeding continuous irradiance values to the controller display and data log.
Is third-party calibration available for this model?
OK Instruments provides factory calibration; accredited third-party calibration services (e.g., A2LA-accredited labs) are available upon request with full uncertainty reporting.
How often should the UV lamps be replaced?
Per ISO 4892-3, fluorescent UV lamps must be replaced after 1600 hours of cumulative operation or sooner if irradiance drops below 90% of initial setpoint—verified via radiometer measurement.
