Biogas Analysers
for Accurate Gas Composition Monitoring
Reliable measurement of CH₄, CO₂, O₂, H₂S, H₂ and CO for anaerobic digestion, biomethane and renewable gas applications.
Over 45 Years in Operation
1000's of UK Installations
Supporting 100's of UK Sites
Biogas analysers are used to measure the composition of gas within anaerobic digestion and renewable gas systems.
Accurate gas analysis is critical for understanding process performance, maintaining safety and optimising output across biogas and biomethane applications.
By continuously monitoring key gases such as methane, carbon dioxide, oxygen and hydrogen sulphide, operators gain clear insight into how systems are performing and where improvements can be made.
Allison Engineering supplies biogas analysers for a wide range of applications, from single-point monitoring through to multi-channel systems and portable analysis, supporting anaerobic digestion, gas upgrading, CHP systems and wider renewable energy processes.
Biogas Analyser Products
From compact single-point analysers to multi-channel systems and portable devices, Allison Engineering can help specify the right biogas analyser for your application, monitoring requirements and process conditions. Find a few examples of our range below.
AwiEco Biogas Analyser
A compact, single-channel biogas analyser designed for reliable CH₄ and CO₂ measurement in anaerobic digestion applications.
Economical yet advanced, with up to 50 measurements per day, analogue outputs and a rugged IP54-rated enclosure.
AwiFlex Biogas Analyser
A flexible multi-channel biogas analyser for monitoring multiple process points across anaerobic digestion and biomethane systems.
Supports up to five measurement locations, with air injection control, data logging and advanced communication options.
AwiFlex XL Biogas Analyser
A high-capacity multi-channel biogas analyser designed for larger, more complex anaerobic digestion and biomethane systems.
Supports multiple measurement points with advanced control, data logging and integration into plant control systems.
Awi2GO Portable Biogas Analyser
A handheld multi-gas analyser designed for fast, accurate biogas measurement across multiple sampling points and applications.
Measures up to six gases with ATEX certification, fast response times and a rugged IP67-rated design for site use.
Why Choose Biogas Analysers
Accurate gas composition measurement
Monitor CH₄, CO₂, O₂, H₂S and other gases to understand process performance and support reliable system operation.
Supports process optimisation
Gas composition data helps operators adjust processes, improve output and maintain stable anaerobic digestion performance.
Improves safety and compliance
Monitoring gases such as H₂S and O₂ supports safe operation, regulatory compliance and early identification of potential issues.
Flexible monitoring options
Available as single-point, multi-channel and portable analysers depending on site requirements and operational needs.
Suitable for demanding environments
Designed for use in challenging biogas conditions, including wet gas, corrosive components and variable process conditions.
Supports efficiency and reporting
Reliable data enables better decision making, supports reporting requirements and helps improve long-term plant efficiency.
Suitable for Multiple Industry Sectors
Renewable Energy & Biogas
Designed for anaerobic digestion, biogas upgrading and renewable gas systems where accurate gas composition monitoring supports performance.
Power & CHP Systems
Supports gas quality monitoring for CHP units and combustion processes where consistency and efficiency are critical.
Wastewater & Water Treatment
Applicable to biogas and process gas monitoring across wastewater treatment sites where reliability and process insight are essential.
Landfill & Gas Recovery
Used for landfill gas monitoring and recovery systems where understanding gas composition is important for safety and performance.
Industrial & Process Applications
Suitable for gas analysis duties across wider industrial applications where monitoring supports control, safety and efficiency.
Energy from Waste
Used in waste-to-energy applications where gas analysis helps monitor combustion processes and maintain operational control.
Need information or advice?
Speak with our friendly, expert team to discuss your requirements and find out how we can help you.
Full Service UK Solutions
Allison Engineering supports biogas analyser projects from initial application review through to supply, commissioning and ongoing support. This ensures customers not only select the right analyser, but get reliable long-term performance.
Specifications & Planning
Application review, technical consultation, product selection and system planning based on gas composition, process conditions and monitoring requirements.
Supply & Commissioning
Product supply, installation and first fit support, commissioning and full setup to ensure analysers are working correctly in the field.
Support & Optimisation
Ongoing UK based servicing, calibration, maintenance and technical support to keep analysers accurate and systems performing reliably over time.
Biogas Analyser FAQs
Explore common questions about biogas analysers, including how they work, which gases are measured, where they are used and how to choose the right system for your application.
What is a biogas analyser?
A biogas analyser is a device used to measure the composition of gas within anaerobic digestion and renewable gas systems. It typically measures gases such as methane (CH₄), carbon dioxide (CO₂), oxygen (O₂), hydrogen sulphide (H₂S), hydrogen (H₂) and carbon monoxide (CO).
Biogas analysers are used to monitor process performance, support safety and provide reliable data for control and optimisation.
Why is biogas analysis important?
Biogas analysis is essential for understanding how an anaerobic digestion system is performing. By monitoring gas composition, operators can assess efficiency, identify issues and optimise the process.
It also plays a key role in safety by monitoring gases such as hydrogen sulphide and oxygen, and supports reporting requirements for compliance and performance monitoring.
What gases are measured in biogas systems?
Biogas analysers commonly measure methane (CH₄), carbon dioxide (CO₂), oxygen (O₂), hydrogen sulphide (H₂S), hydrogen (H₂) and carbon monoxide (CO).
The exact combination depends on the application, whether it is process monitoring, gas upgrading, safety or performance optimisation.
What types of biogas analysers are available?
Biogas analysers are available in several formats depending on the application:
- Single-point analysers for simple monitoring at one location
- Multi-channel analysers for monitoring multiple points across a process
- Portable analysers for on-site measurements, servicing and troubleshooting
The right choice depends on the level of monitoring required and how the system is operated.
Where are biogas analysers used?
Biogas analysers are used across a wide range of applications, including:
- anaerobic digestion plants
- biogas upgrading systems
- CHP units and combustion systems
- landfill gas monitoring
- wastewater treatment plants
- renewable energy and waste-to-energy facilities
They are used wherever understanding gas composition is important for control, safety and performance.
Are biogas analysers suitable for harsh environments?
Yes, biogas analysers are designed for use in challenging environments where gases may be wet, corrosive or variable in composition.
Industrial designs, protective enclosures and application-specific configurations ensure reliable operation in real-world conditions.
How do I choose the right biogas analyser?
Choosing the right analyser depends on:
- the gases to be measured
- number of measurement points
- process conditions
- installation location
- whether fixed or portable measurement is required
For example, a single-point analyser may suit simple monitoring, while multi-channel systems are better for larger or more complex plants.
The best approach is to review the application and match the analyser to the process requirements.
Why choose Allison Engineering for biogas analysers?
Allison Engineering has extensive experience supporting biogas and renewable gas applications across the UK, with a strong installed base and long-term customer relationships.
Our range includes single-point, multi-channel and portable analysers, allowing us to support everything from simple monitoring through to complex multi-point systems.
Combined with application knowledge, technical support and ongoing service capability, we help customers select and maintain the right solution for their site.
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Why Trust Allison Engineering
We are committed to delivering the highest standards across the specialist areas we support, combining proven products with practical engineering knowledge and dependable service.
Need Help Choosing the Right Biogas Analyser?
Allison Engineering can help you identify the right biogas analyser for your application, process requirements and site conditions.