New FCI Mass Flow Meter Optimized for
Wastewater Treatment Digester Gases--
Delivering High Accuracy At Lower Cost

Municipal and Industrial Wastewater Treatment,
Digester Gas Powered Co-Gen Engines, Anaerobic Digester Systems

Plant engineers responsible for improving digester processes or utilizing the biogas as a fuel source will find the new Model ST51 Mass Flow Meter from Fluid Components International is designed as an application-specific solution to meet their unique needs. It is a full-featured meter with high accuracy electronics housed in a compact, explosion-proof transmitter that’s easy-to-install and requires virtually no maintenance.
Wastewater treatment digester gas flow measurement applications are challenging due to the wet, dirty and mixed composition nature of anaerobic digester biogas. This waste gas is a dangerous combination of primarily methane (CH4) and carbon dioxide (CO2), with smaller percentages of hydrogen sulfide (H2S) and other gases. A corrosive environment results as entrained particulates in the gas flow condensate and then deposit themselves on the pipe wall and instruments in the pipe. The gas flow rate varies widely too—based on fluctuating plant process demands and seasonal variations in temperature and humidity.
FCI’s new ST51 Flow Meter is designed specifically to measure digester gas, biogas and other methane composition biofuel gases as well as natural gas. Unlike most flow meter suppliers, FCI precision calibrates all ST51 flow meters in its NIST-traceable flow lab to match the gas composition of the user’s digester system and under the specific flow conditions of the user’s digester system.