Atlas SUNTEST XLS+ Xenon Arc Weathering Test Chamber

Overview

The Atlas SUNTEST XLS+ is a benchtop xenon arc weathering test chamber engineered for high-fidelity simulation of solar radiation, temperature, and humidity effects on materials. It employs a single 1700 W air-cooled xenon lamp with advanced optical filtering—compliant with CIE Publication 85—to replicate spectral power distribution (SPD) of natural daylight, including window-glass-filtered sunlight and indoor retail lighting. Unlike UV-only or fluorescent-based testers, the XLS+ delivers full-spectrum irradiation from 300 to 800 nm, enabling physicochemical degradation mechanisms (e.g., photooxidation, polymer chain scission, pigment bleaching) to proceed under conditions closely aligned with real-world exposure. Its compact footprint (90 × 54 × 62 cm) and 1170 cm² horizontal exposure area support both flat specimens and three-dimensional components—making it especially suitable for automotive trim, consumer electronics housings, medical device enclosures, and architectural coatings.

Key Features

• Single 1700 W air-cooled xenon lamp with long-life uncoated quartz outer filter and integrated aluminum reflector assembly
• CIE 85-compliant spectral output, configurable for 300–400 nm, 340 nm narrowband, or broad 300–800 nm irradiance control
• Precise irradiance regulation (±0.02 W/m² resolution at 340 nm) via closed-loop feedback using calibrated broadband and narrowband sensors
• Black Standard Temperature (BST) sensor per ISO 4892-1; optional Black Panel Temperature (BPT) monitoring available
• 10 programmable test profiles, each supporting up to 12 sequential stages with independent control of irradiance, BST, humidity (via optional SunFlood), and spray cycles (via SunSpray)
• 13-language capacitive touchscreen interface with intuitive icon-driven navigation and real-time parameter visualization
• Integrated Ethernet port for network connectivity; supports optional XenoTouch software modules (Remote Control, Email Alert Service, Live Online Monitoring)
• Onboard non-volatile memory for data logging, diagnostics, and audit-ready event history with timestamped entries
• Preloaded test standards for polymers, paints, textiles, and adhesives—including ASTM D4329, ISO 4892-2, AATCC TM16, and SAE J2527

Sample Compatibility & Compliance

The SUNTEST XLS+ accommodates diverse sample geometries—including molded parts, extrusions, laminates, and assembled subassemblies—without requiring custom fixtures. Its horizontal exposure plane allows simultaneous testing of multiple specimens up to 39 × 30 cm in footprint. All thermal and radiometric calibrations are traceable to NIST standards. The system meets ISO 4892-1 requirements for apparatus specification and incorporates a BST sensor conforming to dimensional and response-time criteria defined therein. Optional SunCool accessory enables sub-ambient chamber operation down to 5 °C—critical for pharmaceutical packaging and beverage container stability studies where low-temperature photodegradation pathways dominate. Humidity control (via SunFlood immersion module) extends operational capability into high-relative-humidity regimes (>95% RH), satisfying test protocols such as ISO 4892-3 Annex B.

Software & Data Management

Data integrity and regulatory compliance are ensured through built-in features aligned with GLP and GMP frameworks. Internal flash memory stores all irradiance, temperature, and runtime parameters at user-defined intervals (1–600 s), with automatic timestamping and checksum validation. Export options include CSV via USB memory stick or RS232 serial interface. When paired with XenoTouch software, the instrument supports 21 CFR Part 11-compliant electronic signatures, role-based access control, and full audit trail generation—including operator ID, parameter changes, alarm events, and calibration logs. Remote monitoring enables real-time visualization of active test progress across enterprise networks, while email alerts notify users upon cycle completion or fault detection.

Applications

The SUNTEST XLS+ serves laboratories conducting accelerated weathering assessments across regulated and industrial sectors. In automotive R&D, it validates colorfastness and gloss retention of interior trims under simulated showroom lighting. In pharmaceutical development, it evaluates photostability of primary packaging per ICH Q1B guidelines—particularly when combined with SunCool for controlled-temperature light exposure. Coating manufacturers use its reproducible 340 nm irradiance control to rank UV resistance of acrylic, polyurethane, and fluoropolymer systems. Textile labs apply it to assess fading kinetics of dyed fabrics under ISO 105-B02. Its ability to decouple spectral band, thermal load, and moisture exposure makes it indispensable for root-cause analysis of field failures linked to synergistic environmental stressors.

FAQ

What standards does the SUNTEST XLS+ comply with?
It meets ISO 4892-1 (apparatus specifications), ISO 4892-2 (xenon arc method), ASTM G155, and CIE 85 for spectral simulation fidelity.
Can the instrument operate without optional accessories?
Yes—the base configuration supports irradiance and BST control; SunSpray, SunFlood, and SunCool are modular add-ons for enhanced environmental realism.
Is calibration documentation provided?
Each unit ships with a factory calibration certificate traceable to NIST, covering irradiance sensors, BST probe, and chamber temperature uniformity.
How is irradiance uniformity maintained across the exposure plane?
Optical design—including parabolic reflector geometry, lamp-to-sample distance optimization, and precision-aligned filter slots—ensures ±15% irradiance uniformity over the full 1170 cm² area per ISO 4892-2 Annex A.
What data security measures are implemented?
Local storage uses write-protected memory partitions; network-connected operation supports TLS 1.2 encryption and LDAP authentication when integrated with XenoTouch Enterprise.