Ozone Aging Test Chamber – QY Series (Customizable Volume Models: QY-80 to QY-1000) – Stainless Steel Enclosed Recirculating System with UV-Based Ozone Monitoring

Overview

The QY Series Ozone Aging Test Chamber is an engineered environmental test system designed for accelerated evaluation of elastomeric and polymeric materials under controlled ozone exposure conditions. It operates on the principle of dynamic or static ozone-induced crack propagation — a degradation mechanism governed by atmospheric ozone concentration, temperature, relative humidity, mechanical strain state, and exposure duration. The chamber integrates a fully sealed, recirculating gas loop featuring a silent discharge ozone generator and a non-dispersive ultraviolet (UV) absorption ozone analyzer, ensuring stable, traceable, and operator-safe ozone dosing across the full 50–1500 ppm (parts per hundred million) operational range. Constructed from electropolished stainless steel (AISI 304), the test chamber eliminates catalytic ozone decomposition and maintains chemical inertness during prolonged testing. Temperature is regulated between 25 °C and 40 °C with ±0.5 °C stability; humidity is maintained at 30–65 % RH via integrated humidification/dehumidification modules. All critical parameters — ozone concentration, temperature, humidity, and exposure time — are concurrently monitored and controlled using a Siemens S7-1200 PLC paired with a Weinview 7-inch color touchscreen HMI, enabling deterministic test execution and audit-ready data logging.

Key Features

• Fully enclosed stainless steel test chamber (AISI 304) with welded seams and zero external ozone leakage — certified for laboratory safety compliance.
• Silent discharge ozone generator with ceramic dielectric barrier, delivering stable ozone output without nitrogen oxide byproducts.
• Non-dispersive UV ozone analyzer with dual-beam optical path; factory-calibrated, drift-compensated, and rated for ≥5 years continuous operation.
• 360° motor-driven rotary sample rack (1 rpm), engineered to replicate cycloidal motion per ISO 1431-1 Annex B for dynamic aging tests.
• Static test configuration available via fixed-strain specimen holders compatible with ASTM D1149 Type A/B fixtures.
• PID auto-tuning controllers for independent regulation of ozone concentration, temperature, and humidity — eliminating manual tuning effort.
• Calibration access port compliant with ISO/IEC 17025 metrological traceability requirements; supports third-party verification of ozone sensor accuracy.
• Integrated safety interlocks: thermal cutoff (120 °C max), ground-fault circuit interrupter (GFCI), overcurrent protection, and ozone leak detection alarm.

Sample Compatibility & Compliance

The QY Series accommodates standard test specimens per ISO 1431-1 (dumbbell, ring, or strip geometries), ASTM D1149 (Type A/B tensioned strips), and GB/T 7762 (static elongation up to 20 %). Custom fixture interfaces support client-specific part geometries up to 100 cm × 100 cm × 100 cm (QY-1000 model). The system meets essential regulatory and industry standards including ISO 1431-1:2004, ASTM D1149–19, GB/T 7762–2003, GB/T 2951.21–2008, and GB/T 11206–2009. Its closed-loop architecture satisfies OSHA 29 CFR 1910.1200 (HCS) and EU Directive 2004/37/EC (carcinogen exposure limits) for ozone handling. Data integrity complies with ALCOA+ principles; audit trails, electronic signatures, and user-level access control align with FDA 21 CFR Part 11 readiness when deployed in GMP/GLP environments.

Software & Data Management

Control firmware supports real-time parameter visualization, programmable multi-step test profiles (e.g., ramp-hold cycles), and automatic report generation (PDF/CSV). All sensor outputs — ozone (pphm), temperature (°C), humidity (% RH), and elapsed time — are timestamped at 1-second resolution and stored locally on industrial-grade SD card. RS232 serial interface enables integration with LIMS or MES platforms; optional Ethernet module adds Modbus TCP and OPC UA connectivity. Data export includes raw sensor logs, calibration history, operator ID, and event annotations (e.g., door open, power cycle). Firmware updates are performed via secure USB authentication to prevent unauthorized modification.

Applications

This chamber is routinely deployed in R&D labs and QC departments for predictive lifetime assessment of rubber compounds (NR, SBR, EPDM, CR), silicone elastomers, automotive seals, aircraft hydraulic hoses, cable jacketing, and medical tubing. It supports formulation screening, batch release testing, supplier qualification, and failure root-cause analysis. Dynamic mode evaluates crack initiation under cyclic strain; static mode quantifies critical strain thresholds for surface fissuring. Universities and national metrology institutes utilize its calibrated ozone delivery for method validation studies and inter-laboratory round-robin testing.

FAQ

What ozone concentration range does the QY Series support?
The system delivers and maintains ozone concentrations from 50 to 1500 ppm (parts per hundred million) with ±5 % full-scale accuracy.
Is the ozone analyzer NIST-traceable?
Yes — the UV absorption sensor is supplied with a manufacturer’s calibration certificate referencing NIST SRM 2691a; field recalibration ports enable periodic verification against certified ozone standards.
Can the chamber operate continuously for extended durations?
Designed for unattended 7×24 operation, it features redundant thermal monitoring, self-diagnostic PLC routines, and automatic shutdown on fault detection.
Does the system support both static and dynamic test modes?
Yes — static fixtures are standard; dynamic rotary racks (1 rpm, 360° continuous rotation) are included as default and conform to ISO 1431-1 Annex B trajectory specifications.
What electrical supply is required?
AC 380 V ±5 %, 50 Hz ±0.5 Hz, three-phase with protective earth; total power consumption ranges from 3.2 kW (QY-80) to 8.5 kW (QY-1000).