Airyx WGA020 Wastewater Gas Analyzer
Real‑time N₂O, CO₂, CH₄ and O₂ emission monitoring in wastewater treatment basins.
Description
The Airyx WGA020 is a wastewater greenhouse gas analyzer that provides long‑term stable, real‑time measurements of N₂O, CH₄, CO₂ and O₂ in wastewater treatment processes.
Gases are captured using a flexible, deployable floating hood system designed for easy field operation. The analyzer requires no gas bottles, reducing operational cost and simplifying deployment.
Airyx’s patent‑pending technology provides:
- background‑corrected emission quantification
- internal zero‑drift reduction
- cross‑interference correction (CO₂, water vapour)
This ensures high precision, low maintenance effort and reliable continuous monitoring even in demanding wastewater environments.
Use Cases
- Ideal N₂O emission monitoring system for denitrification basins
- Greenhouse gas emission reporting for wastewater treatment plants
- Process optimisation using real‑time gas emission data
- Compliance and regulatory monitoring for WWTPs
- Research studies on wastewater greenhouse gas fluxes
Key Features
Real-time continuous measurements
The WGA020 provides continuous, high‑precision real‑time monitoring of N₂O, CH₄ and CO₂ emissions in wastewater treatment processes.
Integrated emission rate calculation
An internal maintenance‑free flow sensor enables automated and accurate emission flux quantification.
No gas bottles required
The system operates without external calibration gas cylinders, reducing operational effort, cost and on‑site logistics.
Automated zero-point calibration and checks
Internal zero‑point correction and cross‑interference validation improve long‑term stability and minimize drift.
Background measurement capability
The WGA020 distinguishes between ambient and process‑related emissions, enabling accurate net‑emission estimation.
Frequently Asked Questions
Which gases does the WGA020 measure?
The WGA020 measures N₂O, CH₄, CO₂ and O₂, providing a complete greenhouse gas profile for wastewater treatment applications.
Does the analyzer require gas bottles?
No. The system operates without calibration gas bottles, making it easier to deploy and reducing maintenance and operating costs.
How are emissions captured?
Emissions are collected through a flexible, deployable floating hood designed specifically for wastewater basins. This ensures stable, representative sampling with minimal effort.
Is the WGA020 suitable for long-term monitoring?
Yes. The WGA020 is designed for continuous, year‑round operation with low maintenance requirements, making it ideal for long‑term monitoring campaigns.
Can the system automatically calculate emission fluxes?
Yes. The integrated flow sensor and background correction enable automated and accurate emission flux quantification.

Example data: N₂O and CH₄ emission flux measurements from the WGA020.
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Technical Details
| Parameter | Specification |
|---|---|
| Measured Gases | N₂O, CO₂, CH₄, O₂ |
| Measurement Principle | NDIR for N₂O, CO₂, CH₄; Electrochemical O₂ sensor; includes cross‑interference correction & water removal |
| Additional Parameters | Ambient temperature, pressure, total sample flow |
| Time Resolution | 1 s internal; typical 60 s averaging; adjustable |
| Enclosure | Rugged, weatherproof, IP64 |
| Power Supply | 24 VDC external |
| Power Consumption | 30 W nominal, 120 W peak |
| Operating Temperature | -10°C to +40°C |
| Dimensions | 660 × 400 × 240 mm |
| Weight | ~35 kg system; ~8 kg sampling hood |
| Mounting Options | Four‑point fixation; custom options |
| Data Interfaces | Ethernet, optional 4–20 mA, USB data storage |
Measurement Ranges and Limit of Detection
| Gas | Measurement Range | Limit of Detection | Emission Rate Sensitivity |
|---|---|---|---|
| N₂O | 0–1000 ppm | 0.5 ppm | 0.8 mg/m²/h |
| CO₂ | 0–100 000 ppm | 50 ppm | 84 mg/m²/h |
| CH₄ | 0–1000 ppm | 5 ppm | 3 mg/m²/h |
| O₂ | 0–100 vol % | 0.1 vol % or 0.5 % of reading | n/a |
DOWNLOADS
WGA020 DATA SHEET
FOR DIRECT CONTACT SEE FORM BELOW.
EUROPE
FRANCE:
MEGATEC SAS
Immeuble Homère, Les Algorithmes
91190 Saint-Aubin, France
Phone: + 33 1 69 35 58 00
Website: https://www.megatec.fr/
Contact: https://www.megatec.fr/contact
Contact person: Fabrice Losbar
SLOVAKIA, CZECH & LITHUANIA:
ENVItech Bohemia s.r.o.
Ovocná 34
161 00 Praha 6
Czech Republic
Webite: ENVItech Bohemia s.r.o.
Contact: Contact
SPAIN & PORTUGAL:
GREEN LIGHT RESEARCH SLU
Airyx products at Green Light Research:
ICAD NOx analysators
ICAD HONO/NO2 anaylsator
Open Path remote sensing
SkySpec remote sensing
ITALY:
LUCHSINGER SRL
Website: http://www.luchsinger.it/
Airyx Products | Luchsinger
UNITED KINGDOM & IRELAND:
CURA TERRAE AIR LTD
(FORMERLY ENVIRO TECHNOLOGY SERVICES LTD)
Unit B1, Kingfisher Business Park, London Road,
Stroud, Gloucestershire, GL5 2BY, UK
Phone: +44 (0) 1453 733200
Website: www.et.co.uk
NO₂/NOx/NO Analyser High Grade Version (ICAD 200DL) | ET
AirYX Plume Chasing – NO2 / NOX / NO ICAD In Situ Monitor | ET
AirYX HONO / NO2 Analyser (Model ICAD 200L) | Enviro Technology Services (et.co.uk)
NETHERLANDS, BELGIUM, LUXEMBOURG, DENMARK, SWEDEN, NORWAY:
THE DUTCH SCIENTIST
Kardinaal van Rossumplein 11
5211 RV ‘s-Hertogenbosch
The Netherlands
Phone: +31 629 437 116
Website: www.thedutchscientist.com
FINLAND:
HNU NORDION
Atomitie 5 B 600371, HELSINKI, FINLAND
Phone: +40 745 6225
Website: https://hnunordion.fi/
GREECE:
Polaris Environment Ltd
Complete Environmental Solutions
44 Lagoumitzi Str, 11745 Athens, Greece
Attn. Grigoris Nikolidakis
Phone: +306975906253
Website: www.polaris-environment.gr
ROMANIA:
APEL LASER
Mogosoaia, Strada Vanatorilor nr. 25, cod 077135, jud. Ilfov, Romania
Phone: +40 21 31 70 910
Website: Apel Laser » Lighting the Future
BULGARIA, SERBIA, NORTH MACEDONIA, ALBANIA, MONTENEGRO, SLOVENIA, CROATIA, TURKEY:
STABO-Tech. Ltd.
ul. Dimitar Naumov, 88
6000 Stara Zagora, Bulgaria
Phone: 0039 349 5440483
Website: http://stabo-tech.eu/
ASIA
INDIA:
M&G analyser systems
501,Zenith commercial complex
28/2 Near Agricultural college.
Shivaji Nagar, Pune -411007, India
Website:
:: M & G Analyser Systems | Pune ::
Contact:
:: M & G Analyser Systems | Pune ::
Phone: +91 9822667465.
Kind Attn: Hemanth Krishna Martha,
VIETNAM:
REECO Science and Technology Co., Ltd.
Building A, Software Technology Park, Vo Truong Toan Street,
Vietnam National University, Quarter 6, Linh Trung Ward, Thu Duc City,
Ho Chi Minh City, Vietnam
Website:
Air quality monitoring equipment – Reeco (reecotech.com.vn)
Contact:
INDONESIA:
PT JJExotranoz Inter Vania
Jln. Raya Boulevard Q1 no. 5, Cibubur, Indonesia
Contact: Jefry KP
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CHINA:
LICA United Technology Limited
The 5th.Building,No.18,Anningzhuang East Road
Haidian District, 100085, Beijing, China.
Website: LICA United Technology Limited (li-ca.com)
Airyx Products:
ICAD NO2 / NOx / NO Analyzer – Trace gas measurement
ICAD NO2 / NOx / NO分析仪 – 痕量气体测量 – 北京理加联合科技有限公司 (li-ca.com)
REPUBLIC OF KOREA:
Aireet Inc.
105-502 (5F), 16, Gakhwa-daero 69beon-gil, Buk-gu
Gwangju, Republic of Korea
Phone: +82 (0)10-9350-8148
Website: www.aireet.co.kr
Contact Person: Joonwoo Kim
RUSSIA AND CIS – (ARMENIA, AZERBAIJAN, BELARUS, KAZAKHSTAN, KYRGYZTAN, MOLDOVA, TAJIKISTAN, AND UZBEKISTAN):
Eniseylab Ltd
Russia, 660025, Krasnojarsk, Shelkovaya, 10, Room 102
Phone: +7 (391) 271-66-50
Contact Person: Dmitriy Zhiltsov
Website: www.eniseylab.ru



















