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

Component Sulfur dioxide (SO2)
Measuring principle Ultraviolet Fluorescence
Measurement range 0-0.05/0.1/0.2/0.5/1.0/5.0/10/20 ppm (up to 8 ranges selectable, auto-range)*1
Lower Detection Limit (2σ) < 0.3 ppb*2*3
Measurement unit ppb, µg/m3, ppm, mg/m3
Sample gas flow rate Approx. 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
Display 7-inch color LCD with touch panel
Communication Ethernet × 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 environment Operation temperature : 0-40℃ (32℉ - 104℉), relative humidity : 85% or less
Temperature and pressure compensation With
Sampling pump and filter Internal
Power supply AC 100-240V ±10% (Max. voltage: AC 250 V), 50/60 Hz, consumption 50 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 : 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）
Corrosion Testing of Electronic Components
Corrosion Testing of Electronic Components
Sulfur dioxide (SO2) corrosion testing is essential for evaluating the reliability of electronic and electrical components exposed to harsh industrial environments. ISO/IEC 60068-2-42 specifies controlled SO2 exposure conditions to assess corrosion resistance, contact integrity, and durability. Accurate SO2 concentration control is critical for obtaining reliable and repeatable results. The HORIBA APSA-380 sulfur dioxide monitor supports precise SO2 measurement in corrosion test chambers, helping ensure stable and consistent testing.
Read more
Size: 1.45 MB
Sulfur Dioxide Monitor APSA-380 Brochure
Size: 3.41 MB
Air Quality Monitor AP-380 Series Brochure
Size: 0.51 MB
Remote operation function manual (version 0 / May, 2024)
Size: 1.11 MB
Ambient Monitor APXX-370/APXX-380 Series RS-232C Instruction Manual (version C / July, 2024)
Size: 0.78 MB
Ambient Monitor APXX-370/APXX-380 Series TCP/IP Instruction Manual (version A / July, 2024)
Size: 1.46 MB
Safety information (version A / November 2024)

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