JianHu JH-Series UV Aging Test Chamber – Research-Grade Environmental Test Chamber
| Brand | JianHu |
|---|---|
| Origin | Shanghai, China |
| Model | JH-Series UV Aging Test Chamber |
| Price Range | USD 210–12,000 (FOB) |
| Humidity Range | ≥95% RH (in-chamber actual value) |
| UV Lamp Power | 40 W per tube |
| Irradiance | 0.72 W/m² (at specimen plane, UVA-340 spectral match) |
| Exposure Time Control | 1–9999 hours (programmable) |
Overview
The JianHu JH-Series UV Aging Test Chamber is a research-grade environmental test chamber engineered for accelerated ultraviolet (UV) degradation studies in materials science and product reliability engineering. It operates on the principle of controlled fluorescent UV irradiation—primarily using UVA-340 lamps—to replicate the solar UV spectrum (295–365 nm) most responsible for polymer photodegradation. Unlike broad-spectrum xenon arc or carbon arc sources, UVA-340 lamps provide high spectral fidelity to terrestrial sunlight below 365 nm, enabling reproducible, ISO 4892-3 and ASTM G154 compliant exposure protocols. The chamber integrates precise thermal regulation (ambient to 80 °C), high-humidity capability (≥95% RH), and programmable exposure cycles to simulate real-world climatic stressors—including diurnal UV/thermal/humidity cycling—thereby accelerating photo-oxidative, hydrolytic, and thermo-oxidative aging mechanisms in organic materials.
Key Features
- UVA-340 fluorescent lamp array (40 W per tube) with calibrated spectral output matching CIE daylight reference; lamp life ≥1,600 hours under standard operating conditions
- Microprocessor-based PID controller enabling stable temperature control within ±0.5 °C and humidity regulation at ≥95% RH (non-condensing, verified via capacitive RH sensor)
- Programmable exposure timer (1–9999 h) with multi-step cycle capability—supporting alternating UV-on/condensation, UV-on/dark, or UV-on/spray sequences per ISO 4892-3 Annex A
- Stainless steel 304 interior chamber with removable sample racks; UV-reflective aluminum walls to ensure uniform irradiance distribution (±15% across specimen plane)
- Interlocked safety door with UV-blocking acrylic window and automatic lamp shutoff circuitry; CE-compliant electrical architecture with overtemperature and overcurrent protection
- Front-access lamp replacement design minimizing downtime; standardized G13 base sockets compatible with commercial UVA-340 tubes
Sample Compatibility & Compliance
The JH-Series accommodates flat-panel specimens up to 150 mm × 300 mm × 25 mm (W × L × H) on adjustable stainless steel trays. It supports standard ISO 4892-3 specimen holders (Type A/B) and ASTM G154 specimen racks. The chamber meets core requirements of ISO 4892-3:2013 (Plastics — Methods of exposure to laboratory light sources — Part 3: Fluorescent UV lamps), ASTM G154-22 (Standard Practice for Operating Fluorescent Light Apparatus for UV Exposure of Non-Metallic Materials), and GB/T 14522–2008 (Chinese national standard for mechanical testing of UV resistance). While not inherently 21 CFR Part 11 compliant, its analog/digital interface allows integration with validated third-party data acquisition systems for GLP/GMP environments requiring audit trails and electronic signatures.
Software & Data Management
The chamber operates via an embedded 4.3-inch TFT-LCD touchscreen interface with English-language firmware. All setpoints (irradiance level, temperature, humidity, exposure duration) are stored in non-volatile memory with timestamped event logging (power on/off, lamp status, alarm triggers). Optional RS-485 Modbus RTU output enables connection to SCADA platforms or LabVIEW-based monitoring systems. Raw log files export as CSV via USB port for post-test analysis in MATLAB, Python (Pandas), or statistical packages such as JMP. No proprietary cloud service or vendor-locked software is required—data ownership remains fully with the user.
Applications
This chamber is routinely deployed in academic polymer laboratories (e.g.,清华大学, 哈尔滨工业大学, 苏州大学), industrial R&D centers (automotive OEMs, Tier-1 suppliers, semiconductor packaging firms), and third-party testing labs (SGS, Bureau Veritas, CNSA-accredited facilities). Typical use cases include: quantifying yellowness index (ASTM E313) and gloss retention (ASTM D523) in automotive interior trim; evaluating chalking and cracking resistance in architectural coatings per ISO 11507; assessing encapsulant stability in photovoltaic modules (IEC 61215-2 MQT10); validating UV barrier performance of medical device packaging (ISO 11607-1); and screening biodegradable polymer degradation kinetics under simulated subtropical conditions.
FAQ
What UV spectrum does the JH-Series replicate?
It uses UVA-340 fluorescent lamps conforming to the spectral power distribution specified in ISO 4892-3 Annex B for “UV-A” exposure—peaking at 340 nm with >90% of output between 315–365 nm.
Can the chamber perform condensation cycles?
Yes—the system supports optional condensation mode via bottom-mounted water reservoir and controlled chamber cooling, enabling ASTM G154 Cycle 1 (UV + condensation) and Cycle 4 (UV + spray) when equipped with auxiliary spray nozzles.
Is calibration documentation provided?
Each unit ships with factory-verified irradiance calibration certificate traceable to NIM (National Institute of Metrology, China) for the installed lamp set at 0.72 W/m² @ 340 nm.
What maintenance is required?
Lamp replacement every 1,600 hours; quarterly cleaning of reflector surfaces and RH sensor; annual verification of temperature/humidity sensors using NIST-traceable references.
Does it support remote monitoring?
Via optional RS-485 Modbus interface—no built-in Wi-Fi or Ethernet; integration with existing facility SCADA or building management systems is supported through standard protocol mapping.
