Digester Gas Monitor
Gas from waste digesters contains high levels of methane, CO2, and H2S, and little to no oxygen present. The Control Equipment digester gas monitor checks for all these gases on a cyclic basis. A powerful air aspirator pulls a sample from up to 30 meters away. Since digester gas contains high humidity and high H2S, both of which can cause damage to sampling systems, the digester gas monitor is designed to handle these with no damage to the sampling system or sensors. The sample is filtered through a series of dirt, dust, and moisture stopping filters, and these filters are automatically blown back and cleaned out with fresh air at the end of each cycle.