Products
View some of our proven products from leading manufacturers, selected to deliver reliable solutions and supported across the UK.
The AwiFlex Multi-Channel Biogas Analyser is a flexible, application-led solution designed for accurate and reliable gas analysis across biogas and biomethane systems. Built to support more complex installations, it can be configured to suit a wide range of applications, from anaerobic digestion through to gas upgrading and process optimisation.
The AwiFlex can sequentially sample from up to five different measurement points, providing operators with a clear and consistent view of gas composition across key stages of the process. This makes it particularly valuable where monitoring multiple locations is essential for performance, control and compliance.
A key feature of the system is its ability to directly control air injection for microbial desulphurisation, helping optimise H₂S reduction and improve overall process efficiency. The analyser is equipped with an industrial touch-screen interface, offering real-time gas concentration display, historical data logging and intuitive system control.
Designed for reliability in demanding environments, the AwiFlex includes internal leak monitoring and automatic H₂S overload detection as standard, helping protect both the instrument and the process. It also supports a wide range of communication protocols, making integration with existing control systems straightforward.
Typical measurement gases include CH₄, CO₂, O₂, H₂S and H₂, providing comprehensive insight into biogas composition and supporting efficient plant operation.
- Multi-channel biogas analyser with up to 5 measurement points
- Measures CH₄, CO₂, O₂, H₂S and H₂
- Designed for biogas and biomethane applications
- Supports microbial desulphurisation via air injection control
- Industrial 7” TFT touch screen interface with data logging
- Internal leak monitoring and H₂S overload detection as standard
- Multiple communication options including 4-20mA, Profibus, Ethernet and Profinet
- ATEX II 3G (Zone 2) suitable
- Accepts inputs from biogas flow meters
- Typical sampling interval of ~30 minutes (configurable)
Over 45 Years in Operation
1000's of UK Installations
Supporting 100's of UK Sites
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 projects from early-stage selection through to supply, commissioning and long-term support. For customers, that means not just choosing a product, but getting the right solution for the application.
Specifications & Planning
Application review, technical consultation, product selection and system planning based on type, process conditions and installation requirements.

Supply & Commissioning
Product supply, installation guidance, commissioning and full support services to get your process instrumentation working correctly in the field.
Support & Optimisation
Teams providing calibrations, servicing, maintenance, training and ongoing support to keep systems performing accurately and reliably over time.

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 Product for your Application?
Allison Engineering can help you identify tried and tested products to suit your process conditions and site requirements.




































