APSA-380

Sulfur Dioxide Monitor

For Your Needs in Air Quality Monitoring

The APSA-380 is an analyzer for measuring sulfur dioxide 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 ultraviolet fluorescence (UVF) technology enables high sensitivity and stable real-time continuous measurement.

　

*This video is for illustration purposes.

Division: Ambient
Manufacturing Company: HORIBA, Ltd.

 Ultimate Performance

  • Ultraviolet fluorescence technology provides excellent sensitivity, stability and robustness
  • Continuous online measurement with fast response
  • Wide measurement range with up to 8 ranges selectable, minimum 0-0.05 ppm and maximum 0-20 ppm
  • UV fluorescence detector and integrated HC cutter eliminate interference from moisture and coexisting components
  • Incorporated UV lamp intensity compensator
  • 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)
  • Dust filter accessible from the front panel for easy daily maintenance

 

       Trend Graph Screen    Dust Filter

 

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
  • ModbusTM TCP and RTU communication
  • USB flash drive 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

  • Remote operation reduces emission from transportation, contributing to the reduction of carbon footprint
  • Approx. 20%* reduction in power consumption
  • Long life parts for reducing environmental load


      * In-house comparison with previous model.

 

 Approvals & Certifications

  • QAL1 certified by the TÜV, certificate No. 0000087854 as compliant with standards
    VDI 4202-1 (2018), EN 14212 (2012), EN 14212 (2024), EN 15267-1 (2009) and EN 15267-2 (2023).
  • U.S. EPA approved as compliant with EQSA-0506-159
  • MCERTS cerified by CSA Group to the No. CSA MC260466/00 and compliant with standards
    EN 15267-1 (2023), EN 15267-2 (2023), EN 14212 (2024)
  • NIER certified 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-2024-10
  • CPA certification No. 2025C238-31 as complaint with standards JJF 1361-2012

 

Related products


APMA-380
Carbon Monoxide Monitor
APOA-380
Ozone Monitor
APHA-380
Hydrocarbon Monitor
APNA-380
Nitrogen Oxides Monitor

 

■ APSA-380 Specifications

ComponentSulfur dioxide (SO2)
Measuring principleUltraviolet Fluorescence
Measurement range0-0.05/0.1/0.2/0.5/1.0/5.0/10/20 ppm (up to 8 ranges selectable, auto-range)*1
Lower Detection Limit (2σ)< 0.3 ppb*2*3
Measurement unitppb, µg/m3, ppm, mg/m3
Sample gas flow rateApprox. 0.6 L/min
Repeatability±1.0% of full scale
Linearity±1.0% of full scale
Zero drift< 0.5 ppb (24 h)
Span drift< 0.5% of full scale (24 h)
Response time (T95)< 120 s from the inlet*3
Display7-inch color LCD with touch panel
CommunicationEthernet × 2 (ModbusTM TCP), RS-232C × 1 (ModbusTM RTU) , USB flash drive × 1
Analog output (option)Maximum : 3 channels (insulated)
DC4-20 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 environmentOperation temperature : 0-40℃ (32℉ - 104℉), relative humidity : 85% or less
Temperature and pressure compensationWith
Sampling pump and filterInternal
Power supplyAC 100-240V ±10% (Max. voltage: AC 250 V), 50/60 Hz, consumption 50 W
Dimensions, weight430 (W) x 568 (D) x 221 (H) mm, Approx. 18 kg
Approvals & CertificationsU.S. EPA, QAL1, MCERTS, NIER, CPA
Regulatory ComplianceFCC, CE, UKCA, RoHS, WEEE, China RoHS, KC

*1 : 2nd point calibration is required in case of using higher than 1 ppm range  *2 : For ranges less than 1 ppm  *3 : 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)

Dimensional Outline

 

■ Rear Panel Configuration

  1. Exhaust
  2. Calibration gas inlet (option)
  3. Sample gas inlet
  4. AC power connector
  5. I/O terminal block
  6. USB flash drive connector
  7. Ethernet connector
  8. 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）

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