HORIBA APNA-380: Ambient Nitrogen Oxides Monitor (NO, NO2, NOx)

The HORIBA APNA-380 is a high-performance ambient NOx monitor designed for continuous, high-precision measurement of Nitrogen Oxides in the atmosphere. Utilizing the advanced Cross-Flow Modulation Chemiluminescence method, the APNA-380 delivers the sensitivity and stability required for the most demanding air quality monitoring networks.

As a part of the 300-series ambient monitors, the APNA-380 is engineered for long-term reliability, minimal maintenance, and compliance with international environmental standards.

Key Measured Components

The APNA-380 provides simultaneous and continuous monitoring of:

• NO (Nitrogen Monoxide)

• NO2 (Nitrogen Dioxide)

• NOx (Total Nitrogen Oxides)

Advanced Measurement Principle

The APNA-380 uses the Cross-Flow Modulation Chemiluminescence (CLA) method.

• Superior Stability: By alternating the flow between sample gas and reference gas, the system eliminates zero-point drift and the need for frequent optical adjustments.

• Innovative Ozone Generation: The unit features a highly durable, non-depleting ozone generator and a proprietary de-ozonizer that converts O3 back into O2, enhancing both safety and instrument lifespan.

• Low Detection Limits: Capable of measuring at the ppb (parts per billion) level, making it ideal for background ambient monitoring.

Global Certifications & Compliance

The APNA-380 is recognized worldwide for its accuracy and reliability, holding major certifications including:

• TÜV (Germany): Certified for use in official air quality monitoring networks (EN 14211).

• US EPA: Designated as a Federal Reference Method (FRM) or Equivalent Method.

• MCERTS (UK): Performance-tested for environmental monitoring.

• CE Marking: Fully compliant with European safety and emission standards.

Versatile Applications

The APNA-380 is the industry standard for various environmental and industrial monitoring scenarios:

• Ambient Air Quality Monitoring (AAQM): Integration into national and regional monitoring stations.

• Roadside & Tunnel Monitoring: Real-time analysis of vehicle-related emissions.

• Industrial Perimeter Monitoring: Tracking emissions around refineries, power plants, and chemical sites.

• Research & Development: High-accuracy data collection for atmospheric chemistry studies.

Technical Features & Benefits

• Intuitive Operation: Large color LCD touch screen with trend graphs and status indicators.

• Easy Maintenance: Front-access design allows for quick filter changes and service without removing the unit from the rack.

• Smart Data Management: Internal data logging with storage for up to one year of 1-minute values.

• Remote Connectivity: Ethernet and RS-232 interfaces for seamless integration into telemetry systems.

• Reduced Gas Consumption: Optimized design reduces the amount of sample gas and consumables required.

Technical Specifications

Partner with AAVOS International

AAVOS International BV is your trusted partner for the supply, installation, and maintenance of HORIBA ambient air quality monitors across the Benelux. Our technical team ensures your monitoring systems operate at peak performance, providing the reliable data you need for environmental compliance.