Overview

The AELAB EXPEC-2000 BTEX Analyzer is a chromatographic instrument engineered for continuous volatile organic compound (VOC) monitoring, specifically targeting benzene, toluene, ethylbenzene, and xylene in ambient air. It applies gas chromatography with flame ionization detection (FID) to separate and quantify BTEX compounds at trace levels, supporting environmental compliance and industrial hygiene applications. Optional Photoionization Detector (PID) integration enhances compound discrimination and detection sensitivity.

⚙ Design & Construction

The EXPEC-2000 is built with a fully heat-traced sampling and detection system, eliminating condensation and minimizing adsorption of high-boiling VOCs. Its compact enclosure houses a chromatographic oven with PQ separation columns, a ten-way valve for sample routing, and a Flame Ionization Detector that ignites automatically after warm-up. This integrated design ensures accurate and continuous analysis with minimal operator maintenance.

🔬 Working Principle / Testing Method

The AELAB EXPEC-2000 BTEX Analyzer operates on chromatographic separation of VOCs. Ambient air is drawn into a sample loop, then injected into the column system by a ten-way valve. Each BTEX compound elutes at a distinct retention time and is detected by the FID based on ionization of hydrocarbon molecules in a hydrogen-air flame. Signal intensity is proportional to compound concentration. Optional PID detection further enhances selectivity for low-molecular VOCs.

💡 Key Advantages

• Simultaneous detection of benzene, toluene, ethylbenzene, and xylene.
• Analysis cycle <10 minutes with automatic calibration and flame ignition.
• Heat-traced gas path prevents condensation and ensures VOC stability.
• Continuous online operation requiring minimal operator intervention.
• Detection limits as low as 0.7 μg/m³ for benzene.
• Flexible data output via Ethernet, RS232, RS485, and 4–20 mA.

🔗 Connectivity & Integration

The system supports networked operation through standard industrial interfaces, allowing integration with SCADA, LIMS, or environmental data platforms. Remote access enables data logging, trending, and automated report generation. Outputs include analog (4–20 mA) and digital channels for external system control and alarm signaling.

🧠 Model Insight

The EXPEC-2000 is part of AELAB’s air monitoring series, designed for 24/7 VOC analysis. The analyzer’s short cycle time and low detection limits make it suitable for urban air networks, petrochemical zones, and process emission studies. With optional PID enhancement and DB-1/DB-5 capillary column configuration, it accommodates both regulatory and research-grade applications.

🧪 Testing Applications

• Ambient BTEX quantification for environmental air monitoring networks.
• Emission tracking in refineries and petrochemical facilities.
• VOC source apportionment and atmospheric chemistry research.
• Industrial hygiene and workplace exposure assessment.
• Regulatory compliance monitoring by public health and environmental agencies.

Compliance & Quality Assurance

The AELAB EXPEC-2000 BTEX Analyzer complies with international EPA and EN VOC monitoring standards. All systems undergo multi-point calibration, thermal uniformity testing, and detector linearity validation prior to delivery. Manufactured under ISO 9001 quality management, the analyzer provides traceable, reproducible BTEX quantification for air quality and occupational exposure evaluation.

Specifications