Airyx WGA020 Wastewater Gas Analyser
High‑precision N₂O, CH₄ and CO₂ emission monitoring and O₂ control with the Airyx WGA020 wastewater gas analyser
High precision – Reliable data
The Airyx WGA020 wastewater gas analyser provides high‑precision, real‑time monitoring of N₂O, CH₄, CO₂ and O₂ in aerated basins and automatically calculates net emission rates for process and climate reporting.
Designed for long‑term greenhouse‑gas monitoring in wastewater treatment plants, the system samples directly above the water surface using a floating hood. In addition, the analyser measures N₂O, CH₄, CO₂ and O₂ in real time and derives net fluxes through an integrated total‑flow sensor.
Moreover, sample‑air drying, automatic cross‑interference correction and a temperature‑stabilised sensor housing ensure stable, low‑drift performance under changing environmental conditions.
Field‑Ready Design for Wastewater Environments
Additionally, the rugged IP64 enclosure supports continuous outdoor operation. The system requires no permanently attached calibration gas bottles, which reduces operating effort and cost.
Instrument control and data access are available via the front‑panel touch display or browser‑based web interface over LAN. Furthermore, optional LTE connectivity enables secure remote access for monitoring and troubleshooting.
Some of our valuable customers
Use Cases for the Airyx Wastewater Gas Analyser WGA020
| Application | Description |
|---|---|
| N₂O emission monitoring | High‑precision tracking of nitrification and denitrification emissions. |
| Process optimization | Real‑time greenhouse gas signals for operational control. |
| Regulatory compliance | Supports monitoring requirements for wastewater treatment plants. |
| GHG reporting | Accurate long‑term flux measurements for emission inventories. |
| Scientific research | Detailed flux and concentration data for basin dynamics and modeling. |
| Spatial variability checks | Dual‑hood mode enables multi‑point comparison and validation. |
The Airyx WGA020 wastewater gas analyser supports a wide range of operational and scientific use cases across modern treatment facilities. As a result, operators can obtain consistent long‑term greenhouse‑gas data for process optimisation.
In addition, the system captures short‑term emission dynamics with high temporal resolution, enabling deeper process understanding and more accurate reporting.
Key Features
High‑precision real‑time measurements
Continuous monitoring of N₂O, CH₄, CO₂ and O₂ with 1‑second internal resolution and integrated emission‑rate calculation.
Automatic drift and interference correction
Built‑in zero‑drift correction, cross‑interference calibration and sample‑air drying ensure stable long‑term accuracy.
Gas‑bottle‑free operation
No permanently connected calibration gases required, reducing operating costs and deployment complexity.
Rugged IP64 enclosure
Weatherproof housing designed for continuous, year‑round outdoor operation in wastewater environments.
Flexible sampling options
Floating hood for stable capture above the water surface; optional dual‑hood mode for spatial variability checks.
Low maintenance
Annual service only: sensor calibration, scrubber refill and hood cleaning.
Remote access and data interfaces
Touch display and web interface; Ethernet, USB data export; optional LTE modem for remote VPN access. The Airyx WGA020 wastewater gas analyser is engineered for long-term, autonomous outdoor operation with minimal servicing requirements.
Frequently Asked Questions
Which gases does the WGA020 measure?
The Airyx WGA020 wastewater gas analyser provides simultaneous N₂O, CH₄, CO₂ and O₂ measurements for complete wastewater emission profiling
Which measurement principle is used?
The analyser uses NDIR to measure N₂O, CO₂ and CH₄, while O₂ is captured via an electrochemical sensor.
Does the analyser require calibration gas bottles?
No continuous calibration gas is needed; only annual sensor calibration with standard gas is required.
Is the system affected by variable ambient temperature?
The WGA020 operates reliably between −10°C and +40°C due to temperature‑stabilized internal components.
How often does maintenance occur?
Annual maintenance covers sensor calibration, scrubber replacement and cleaning of the sampling hood.
Can the system monitor more than one hood?
Yes; dual‑hood operation allows spatial variability checks and quasi‑simultaneous measurements.
How are emissions captured?
A floating sampling hood collects gas directly above the water surface for stable, representative sampling.
How is the data accessed?
Via the touch display, web interface, Ethernet or optional LTE modem for remote VPN access.
What the example data shows
Exemplary data illustrates typical daily patterns of greenhouse gas emissions in aerated wastewater basins. CO₂ and N₂O exhibit clear diurnal peaks driven by biological activity, aeration intensity and basin loading. Because N₂O has a very high global warming potential, even small concentration changes translate into strong climate impact. The WGA020 resolves these dynamics in real time, helping operators identify emission hotspots, optimize aeration and quantify net emission fluxes for reporting and process control.
Conclusion
In summary, the WGA020 provides reliable real‑time greenhouse‑gas measurements for modern wastewater facilities. Its combination of N₂O, CH₄, CO₂ and O₂ monitoring, robust outdoor design and automated correction routines makes it a reliable long-term solution for operational optimisation, regulatory reporting and research applications.
Airyx Wastewater Gas Analyser – Specification Highlights
| Parameter | Specification |
|---|---|
| Measured gases | N₂O, CO₂, CH₄, O₂ |
| Measurement principle | NDIR for N₂O, CO₂, CH₄; electrochemical sensor for O₂; automatic cross‑interference correction; sample‑air drying |
| Measured parameters | Gas concentrations, background air, total sampling flow, greenhouse‑gas emission fluxes, ambient T/p, system‑health parameters |
| Time resolution | 1 s internal, user‑configurable averaging (typ. 60 s) |
| Enclosure | Rugged weatherproof housing, IP64 |
| Operating temperature | −10°C to +40°C |
| Power supply | 220 V AC external supply |
| Power consumption | 80 W nominal (analyser), 120 W peak; heated line: 30–156 W |
| Dimensions | Mounting rack: 1540×500×340 mm; Sampling hood: 890×760×240 mm |
| Weight | Rack incl. instrument + heating: ~35 kg; hood: ~8 kg; equipment: ~5 kg |
| User interface | Touch display, web interface |
| Data interfaces | Ethernet, USB export; optional LTE/VPN remote access |
| Data format | UTF‑8 text files |
| Sample flow | 0–20 slm; background flow 0.3–0.5 slm |
| Sampling area | ~0.3 m²; optional dual 2×0.3 m² |
| Sampling line | Length 3–7 m (typ. 5 m); Ø25 mm or Ø75 mm (heated) |
Airyx Wastewater Gas Analyser – Measurement Performance
| Gas | Measurement Range | Limit of Detection (3*Std. Abw.) | Emission Rate Sensitivity (Std. Abw.) |
|---|---|---|---|
| N₂O | 0–1000 ppm | 0.5 ppm | 0.3 mg/m²/h |
| CO₂ | 0–10 vol.% | 40 ppm | 24 mg/m²/h |
| CH₄ | 0–1000 ppm | 5 ppm | 1.1 mg/m²/h |
| O₂ | 0–100 vol.% | Absolute: 0.1 vol.% Relative: 0.5 % of reading |
n/a |
Airyx Wastewater Gas Analyser – Downloads
WGA020 Data Sheet
Get in Touch with Airyx
Find your local Airyx distributor or contact our Heidelberg team directly. Moreover, we support you with product questions, technical assistance and partnership inquiries.
Contact Airyx Headquarters
Airyx GmbH is based in Heidelberg, Germany. In addition, our team supports customers worldwide in environmental monitoring, wastewater emissions and air‑quality research.
Furthermore, we provide fast technical assistance and reliable guidance for instrument selection.
How to Reach Our Team
Email: info@airyx.de
Phone: +49 6221 9068977
Address:
Airyx GmbH
Hans‑Bunte‑Str. 4
69123 Heidelberg, Germany
If you need product information, quotations or technical assistance, please get in touch. As a result, you can rely on quick feedback when requesting quotations, technical details or product recommendations.
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Find Your Local Distributor
Regional Expertise for DOAS and Gas‑Analysis Systems
Select your region below to find the appropriate Airyx distributor. As a result, you benefit from local expertise and shorter response times.
Europe
Europe
France
MEGATEC SAS
Saint-Aubin, France
Website: https://www.megatec.fr/
Contact: https://www.megatec.fr/contact
Contact person: Fabrice Losbar
Czech Republic, Slovakia & Lithuania
ENVItech Bohemia s.r.o.
Prague, Czech Republic
Website: https://www.envitech-bohemia.cz/
Contact: https://www.envitech-bohemia.cz/en/kontakt
Spain & Portugal
Green Light Research SLU
Madrid, Spain
Website: https://www.greenlightresearch.net/
Contact: https://www.greenlightresearch.net/contacto/
Italy
Luchsinger SRL
Curno, Italy
Website: https://www.luchsinger.it/
Contact: https://www.luchsinger.it/it/contatti/
Netherlands, Belgium, Luxembourg, Nordics
The Dutch Scientist
‘s‑Hertogenbosch, NL
Website: https://www.thedutchscientist.com/
Contact: https://www.thedutchscientist.com/CONTACT/
Finland
HNU Nordion
Helsinki, Finland
Website: https://hnunordion.fi/
Contact: https://hnunordion.fi/yhteystiedot/
Greece
Polaris Environment Ltd
Athens, Greece
Website: http://www.polaris-environment.gr/
Romania (ICAD only)
APEL LASER
Mogosoaia, Romania
Website: https://www.apellaser.ro/
Romania (Open Path, SkySpec, WGA)
PHANOS
Bucharest, Romania
Website: https://phanossci.com/
Bulgaria & Western Balkans
STABO‑Tech Ltd.
Stara Zagora, Bulgaria
Website: http://stabo-tech.eu/
Asia
Asia
India
M&G Analyzer Systems
Pune, India
Website: https://www.mganalyser.com/
Vietnam
Reeco Science & Technology Co.
Ho Chi Minh City, Vietnam
Website: https://reecotech.com.vn/
Indonesia
PT JJExotranoz Inter Vania
Cibubur, Indonesia
Contact: Jefry KP
China
Li‑Ca Scientific
Website: http://en.li-ca.com/
Additional Regional Availability
We also provide local support in Hong Kong, Macau and Taiwan through additional regional partners.
Global Distributor Network
Airyx works with a selected network of regional distributors who provide local expertise in air‑quality monitoring, DOAS‑based systems, wastewater gas analysis and real‑world emissions measurement.
Worldwide Coverage at a Glance
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If you need troubleshooting, data interpretation or guidance for your emissions‑monitoring setup, our technical team is ready to assist you.
