Overview

The AELAB AQMS-300 Ozone Analyzer is a precision UV photometric instrument engineered for quantitative ozone measurement in ambient air. It detects ozone (O₃) concentrations from 0–10 ppm with ppb-level accuracy using ultraviolet absorption at 254 nm, conforming to US EPA equivalent method standards. This analyzer supports continuous monitoring in environmental stations, laboratories, and industrial air networks.

⚙ Design & Construction

The AQMS-300 features a compact rack-mount design with a 42 cm optical absorption chamber that enhances sensitivity and minimizes noise. Its internal layout includes a mercury UV lamp, dual quartz windows, and a UV detector optimized for long-term stability. The integrated temperature-regulated housing stabilizes the optical path and prevents drift. The housing is fabricated from corrosion-resistant materials suitable for continuous air monitoring environments.

🔬 Working Principle / Testing Method

The analyzer operates on the UV photometric absorption principle, where ozone absorbs UV radiation at 254 nm. A continuous airflow passes through the optical cell, and a manganese dioxide (MnO₂) scrubber alternates between filtered (reference) and unfiltered (sample) gas paths. The difference in transmitted UV intensity between these states directly quantifies ozone concentration. The internal electronics convert optical data into digital signals, which are temperature and pressure compensated to provide accurate ppb-level readings.

💡 Key Advantages

• Direct UV absorption measurement eliminates cross-sensitivity to other gases.
• High precision with low noise and minimal drift (≤2 ppb/24 h zero drift).
• Meets US EPA equivalent method for regulatory-grade monitoring.
• Automatic temperature and pressure compensation for stable operation.
• Built-in data logging from 1-minute to 365-day averaging intervals.
• Continuous system diagnostics with alarm alerts for sensor and flow faults.
• Low maintenance optical design with robust MnO₂ scrubber.

🔗 Connectivity & Integration

The AELAB AQMS-300 supports RS232, RS485, and Ethernet communication for flexible system integration. Data can be transmitted to air quality management systems, SCADA platforms, or laboratory information management systems (LIMS). Internal storage retains up to one year of averaged data, accessible via PC software for remote diagnostics and trend analysis.

🧠 Model Insight

This model’s design is based on established UV photometric ozone measurement principles, optimized for high stability and linearity. The multi-point calibration system enhances measurement confidence across the full detection range, while integrated self-diagnostics simplify maintenance. The AQMS-300 balances laboratory accuracy with field durability for environmental monitoring networks.

🧪 Testing Applications

• Continuous ambient ozone monitoring in air quality networks
• Environmental compliance measurement under EPA guidelines
• Industrial hygiene and workplace ozone safety assessments
• Atmospheric chemistry and photochemical reaction studies
• Calibration reference in air pollution monitoring systems

Compliance & Quality Assurance

The AELAB AQMS-300 Ozone Analyzer meets the performance and precision criteria of US EPA equivalent method standards. Each unit undergoes factory calibration with certified reference gas, traceable to international standards. AELAB ensures consistent instrument verification for ISO and GLP-compliant environmental monitoring laboratories.

Specifications