APNA-380

Nitrogen Oxides Monitor

For Your Needs in Air Quality Monitoring

The APNA-380 is an analyzer for measuring nitrogen oxides in ambient air and other background gases, for air quality control as well as for variety of industrial applications. HORIBA's state-of-the-art cross-modulation chemiluminescence enables high sensitivity and stable real-time continuous measurement.

_{*This video is for illustration purposes.}

Segment: Process And Environmental

Division: Ambient

Manufacturing Company: HORIBA, Ltd.

Ultimate Performance

Optimized internal structure enables rapid switching between NOx and NO lines, allowing continuous online measurement with fast response and unparalleled trackability
Cross-modulation chemiluminescence provides excellent sensitivity, stability and robustness
Wide measurement range with up to 8 ranges selectable, minimum 0-0.1 ppm and maximum 0-20 ppm
Enhanced Lower Detection Limit

User-Friendly Interface & Functionality

Durable 7-inch wide color touch screen LCD with intuitive interface and trend graph
Selectable metrics (ppb, μg/m³, ppm, mg/m³), response time (moving average value), and calculation method
User-configurable dilution ratio (e.g., dilution CEMS)

Reduced Operational Expense & Maximum Uptime

Remote diagnostics allow fast and effective maintenance
Internal parts timer with alarm facilitates timely parts replacement, optimizing parts stock
Module design enables easy and fast replacement in the field
High-quality, long lifetime parts for maximum uptime

Connected & Intelligent

Remote operation from various devices:PC, tablet or smartphone
Modbus^TM TCP and RTU communication
USB flash drive can be utilized for data storage

* Standard specification is wired LAN connection. For wireless connection, separate device is required.

Connected & Intelligent

Module Design for Various Needs & Customizations

A gas measurement module can independently provide measurement results
Housing is customizable for stationary, wall mount, mobile or portable installations
Easy integration of multiple AP-380 measurement modules into air quality monitoring station or dilution continuous emission monitoring system (CEMS)

Environment-Friendly Design

Ozone generator with low environmental impact and clean exhaust
Remote operation reduces emission from transportation, contributing to the reduction of carbon footprint
Approx. 8%* reduction in power consumption
Lightweight design. Weight reduced on approx.15%*
Long life parts for reducing environmental load

* In-house comparison with previous model.

Approvals & Certifications

QAL1 certified by the TÜV, certificate No. 0000087852 as compliant with standards
VDI 4202-1 (2018), EN 14211 (2012), EN 14211 (2024), EN 15267-1 (2009) and EN 15267-2 (2023)
U.S. EPA approved as compliant with RFNA-0506-157
MCERTS cerified by CSA Group to the No. CSA MC260464/00 and complaint with standards
EN 15267-1 (2023), EN 15267-2 (2023), EN 14212 (2024)
Certified by NIER in accordance with the Korean environmental testing and inspection regulations
Article 9, Paragraphs 1 and 7 of the Environmental Testing and Inspection Act, and Article 5, Paragraph 3 of the Enforcement Rule
Certificate No. AACMS-2024-11　
CPA certification No. 2025C238-31 as complaint with standards JJF 1364-2012

Related products

APMA-380
Carbon Monoxide Monitor

APOA-380
Ozone Monitor

APSA-380
Sulfur Dioxide Monitor

APHA-380
Hydrocarbon Monitor

■ APNA-380 Specifications

Component	Nitrogen oxides (NO, NO₂, NOx)
Measuring principle	Cross-Modulation Chemiluminescence
Measurement range	0-0.1/0.2/0.5/1.0/2.0/5.0/10/20 ppm (up to 8 ranges selectable, auto-range)
Lower Detection Limit（２σ）	< 0.4 ppb^12
Measurement unit	ppb, μg/m³, ppm, mg/m³
Sample gas flow rate	Approx. 0.7 L/min
Repeatability	±1.0% of full scale
Linearity	±1.0% of full scale
Zero drift	< 0.4 ppb (24 h)
Span drift	< 0.5% of full scale (24 h)
Response time (T₉₅)	< 40 s from the inlet^*2
Display	7-inch color LCD with touch panel
Communication	Ethernet × 2 (Modbus^TM TCP), RS-232C × 1 (Modbus^TM RTU) , USB flash drive × 1
Analog output (option)	Maximum : 3 channels (insulated) DC 4-20 mA, DC 0-0.1 V, DC 0-1 V, DC 0-5 V or DC 0-10 V
Digital output (option)	Relay contact output for range 3 channels, relay contact output for other 6 channels
Digital input (option)	Maximum : 4 channels, non-isolated input
Installation environment	Operation temperature : 0-40°C (32°F to 104°F), relative humidity : 85% or less
Temperature and pressure compensation	With
Sampling pump and filter	Internal
Power supply	AC 100-240 V±10% (Max. voltage: AC 250 V) 50/60 Hz, consumption 140 W
Dimensions, weight	430 (W) x 568 (D) x 221 (H) mm, Approx. 18 kg
Approvals & Certifications	U.S. EPA, QAL1, MCERTS, NIER, CPA
Regulatory Compliance	FCC, CE, UKCA, RoHS, WEEE, China RoHS, KC

*1 : For ranges less than 2 ppm
*2 : Digital filter
・If there is other measurement range requirement than shown above, please consult HORIBA
・Modbus is a trademark of Schneider Electric Inc.

■ Dimensional Outline (Unit: mm)

■ Rear Panel Configuration

Exhaust
Calibration gas inlet (option)
Sample gas inlet
AC power connector
I/O terminal block
USB flash drive connector
Ethernet connector
RS-232C connector

■ Options

I/O terminal block (Analog input/output, digital input/output)
Calibration unit
Flow sensor
USB flash drive
Mounting parts (rubber feet, brackets and slide rails, brackets for slide rails）

APNA-380

Nitrogen Oxides Monitor

For Your Needs in Air Quality Monitoring

Ultimate Performance

User-Friendly Interface & Functionality

Reduced Operational Expense & Maximum Uptime

Connected & Intelligent

Module Design for Various Needs & Customizations

Environment-Friendly Design

Approvals & Certifications

Related products

■ APNA-380 Specifications

■ Dimensional Outline (Unit: mm)

■ Rear Panel Configuration

■ Options

Request for Information