Biogas from different sources can be monitoring a single analyser. Up to three sample points will meet the needs of anaerobic digestion (AD) monitoring and energy from waste monitoring on landfill sites:

AD / biogas

• Measuring from more than one digester to check output from each before the gas is mixed to go to CHP, then checking the mixed line too if desired
• Measuring pre- and post-H2S treatment

Landfill

• Measuring from different sections of a landfill before the gas is mixed
• Measuring on line to CHP and line to flare, so both can be controlled
• Measuring pre- and post-H2S treatment

H2S ranges from 0-50ppm to 0-10,000ppm

• Monitoring at a level appropriate for the H2S level generated by the feedstock being used or treatment used to control H2S, such as ferric dosing or oxygen injection
• Monitoring pre- and post-desulphurisation

High range and low range H2S measurement in the same system but from different sample points

• Monitoring pre- and post-desulphurisation to monitor performance of de-sulphurisation equipment or check whether filter material needs replacing/regenerating
• By having two sensor ranges, the sensors can react quickly and appropriately to the levels being measured without delays in reaction time or purging of high levels out of a sensor to accurately get the lower reading

Additional gas monitoring: CO, H2

• Additional gases can be monitored, depending on local requirements.

Heater

• This modification enables gas monitoring in cold climates 24 hours a day, seven days a week, right round the year.

Applications

• Anaerobic digestion
• Biogas monitoring
• Landfill gas monitoring