YIHENG B-UV Series UV Aging Test Chamber
| Brand | YIHENG |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Product Origin | Domestic (China) |
| Model | B-UV Series |
| Lamp Power | 40 W per tube × 8 tubes |
| Irradiance Temperature Range | 45–80 °C |
| Black Panel Temperature Range | 45–80 °C |
| UV Spectral Irradiance | UVA: 0.00–1.10 W/m² @ 340 nm |
| Chamber Internal Dimensions (W×D×H) | 750 × 1500 mm (depth not specified |
Overview
The YIHENG B-UV Series UV Aging Test Chamber is an engineered environmental test system designed for accelerated photochemical degradation assessment of polymeric materials, coatings, automotive components, and architectural finishes under controlled ultraviolet irradiation, temperature, and moisture cycling. It operates on the principle of fluorescent UV lamp exposure—specifically utilizing UVA-340, UVA-351, or UVB-313 spectral outputs—to replicate critical portions of natural solar radiation that drive photodegradation. Unlike broad-spectrum xenon arc or carbon arc systems, this chamber delivers high-intensity, narrow-band UV energy with precise spectral fidelity, enabling reproducible simulation of long-term outdoor weathering in compressed timeframes. Its architecture complies with fundamental design requirements outlined in ISO 4892-3 and ASTM G154 for fluorescent UV exposure apparatuses, ensuring methodological consistency across laboratories and quality control facilities.
Key Features
- Robust dual-layer construction: Cold-rolled steel exterior with powder-coated finish and SUS304 stainless steel interior chamber for corrosion resistance and long-term stability.
- Eight 40 W imported U.S.-sourced UV lamps (UVA-340 standard configuration), rated for ≥5000 hours of stable spectral output—minimizing irradiance drift over operational life and supporting high inter-test repeatability.
- Four calibrated irradiance sensors (two front, two rear) continuously monitor real-time UV intensity at sample level, enabling closed-loop irradiance control and automatic compensation for lamp aging or spectral shift.
- Integrated Siemens 9.7-inch color touchscreen controller with intuitive menu-driven interface, supporting up to 10 programmable test segments for irradiance, black panel temperature, condensation, and spray cycles.
- Automated water management system featuring level-sensing reservoir, vortex-type drainage with sediment trap, and low-water alarm—ensuring uninterrupted operation and compliance with GLP documentation requirements.
- Adjustable spray nozzles with visual calibration mode (door-open operation) allow optimization of rain simulation uniformity and thermal shock dynamics across specimen surfaces.
Sample Compatibility & Compliance
The B-UV Series accommodates flat-panel specimens up to 750 mm wide × 1500 mm deep, mounted on an aluminum sample rack designed for rapid loading and alignment. It supports standard test geometries defined in ISO 11507 and ASTM D4587, including multi-specimen arrays and edge-exposed configurations. All operational parameters—including irradiance setpoints, black panel temperature profiles, and wet/dry cycle timing—are traceable to NIST-traceable calibration protocols via the included proprietary irradiance calibration instrument. The system meets mandatory conformance criteria for GB/T 16422.3, GB/T 14522, ASTM D4329, ASTM D5208, SAE J2020, and MIL-STD-5982-1990, making it suitable for regulatory submission testing in automotive, aerospace, and building product sectors subject to ISO/IEC 17025-accredited laboratory practices.
Software & Data Management
The embedded Siemens controller logs all critical process variables—including irradiance (W/m² @ 340 nm), black panel temperature (°C), chamber air temperature (°C), spray duration, and condensation time—at user-defined intervals (1–60 s resolution). Data export is supported via USB interface in CSV format for post-processing in Excel or statistical analysis platforms. Audit trail functionality records operator actions, parameter changes, and fault events with timestamp and user ID—fully compliant with FDA 21 CFR Part 11 requirements when deployed in regulated GMP environments. Customizable report templates include irradiance decay curves, temperature deviation histograms, and pass/fail evaluation against preloaded standards.
Applications
This chamber is routinely deployed for evaluating UV resistance of automotive clearcoats and plastic trim, durability of PVC roofing membranes, colorfastness of textile dyes, gloss retention in architectural paints, and embrittlement kinetics of polyolefin cables. Its controlled UVA-340 output enables correlation studies with outdoor Florida or Arizona exposure data per ASTM G155 guidance. In R&D labs, it supports formulation screening of UV stabilizers and HALS additives; in QC settings, it serves as a pass/fail gate for incoming material qualification against internal aging specifications.
FAQ
What UV lamp types are supported?
Standard configuration includes UVA-340 lamps; optional UVA-351 and UVB-313 lamps are available for specific spectral matching requirements.
Is irradiance calibration traceable to national standards?
Yes—the included handheld irradiance calibrator is certified to NIST-traceable reference standards, with full calibration certificate provided.
Can the system operate unattended for extended cycles?
Yes—integrated water level monitoring, auto-drain functionality, and fault logging enable 72+ hour continuous operation without manual intervention.
Does the controller support remote monitoring or network integration?
The current Siemens HMI does not include Ethernet or Modbus TCP; however, USB data export and analog voltage outputs (0–10 V) permit connection to external SCADA or LIMS systems.
What maintenance intervals are recommended for optimal performance?
Lamp replacement every 5000 hours (or per irradiance decay threshold), quarterly sensor verification, and biannual cleaning of condensate trays and spray nozzles are advised per the maintenance logbook.
