With increasing volumes of UK waste now being processed to create biogas from AD (Anaerobic Digestion), Biogas plant operators need to ensure that working capacities are maintained and optimised whilst risks are minimised. This means accurate and dependable online gas composition analysis and flow rate measurements are essential.

To meet this need, Allison Engineering has introduced a range of Biogas analysers and ATEX certified flowmeters. The range of analysers includes the Awi-Eco, a low cost, compact discontinuous analyser which provides 50 CH4 and CO2 measurements per day, with 4-20mA output and USB connection. For more sophisticated monitoring and analysis requirements, the Awi-Flex provides continuous measurement for CH4, CO2, H2S, O2 and H2. This system provides up to 5 measuring points; Ethernet, Profibus, Modbus and USB connection. Most importantly, it can also be used to take flow, temperature and pressure inputs and undertake automated desulphurisation control. All analysers utilise a touchscreen interface for easy access to recorded data, sensor parameters and system diagnostics.

Measurement of dirty, saturated gas at low flow / low pressures can be difficult. For these applications, Allison Engineering offers the FCI ST ATEX certified ‘no-moving’ parts flowmeters, which are particularly suited to Biogas applications because they utilise thermal dispersion technology. 

Allison Engineering                         

T: 01268 526161