To meet this need control and instrumentation specialists, Allison Engineering, offer a range of Biogas analysers and ATEX certified flowmeters. The range includes

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.  It can also be used to take flow, temperature and pressure inputs and undertake automated desulphurisation control.

All Awite analysers use a touch screen industrial interface which allows easy access to recorded data, sensor parameters and system diagnostics.  This ensures information is instantly available, remotely.

Measurement of dirty, saturated gas at low flow / low pressures makes Biogas a difficult application.  For these applications, Allison Engineering offers it range of FCI ST ATEX certified ‘no-moving’ parts flowmeters which use thermal dispersion technology, so they are well suited to the challenges of Biogas applications.  Ease of installation, negligible pressure drop and mass flow output make the ST51 an alternative to conventional DP cells and turbine meters.