Sulfur Dioxide Monitor 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.

Segment: Process And Environmental

Division: Ambient

Manufacturing Company: HORIBA, Ltd.

Ultimate Performance

Ultraviolet fluorescence technology provides excellent sensitivity, stability and robustness
Real-time continuous measurement
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 and response time

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
Programmable dilution ratio
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 at field
High-quality, long lifetime parts for maximum uptime

Connected & Intelligent

Remote operation from various devices: PC, tablet or smartphone
Modbus^® 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

Each standalone module, powered by DC 24 V, is capable of providing measurement results
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 station (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 reduce environmental load

* In-house comparison with previous model.

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^23
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 (Modbus^® TCP), RS-232C × 1 (Modbus^® 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
Compliance	CE, UKCA, KC, FCC, China RoHS

*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 USA Inc.

■ Dimensional Outline (Unit: mm)

Dimensional Outline

■ Rear Panel Configuration

Rear Panel Configuration

1. Exhaust                              6. I/O terminal block
2. Calibration gas inlet (option) 7. USB flash drive connector
3. Sample gas inlet                       8. Ethernet connector
4. Guide label                               9. RS-232C connector
5. AC power connector

■ Flow Sheet

■ Options

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

APSA-380