Municipal wastewater treatment engineers will want to learn more about the advanced ST98 Air/Gas Flow Meter which reliably measures the blended waste gas and natural gas necessary to keep co-gen electric power systems up and running.
Due to fluctuations in plant waste gas supply, seasonal temperature changes and other factors, wastewater treatment plant co-generation electric power systems typically rely on both waste gas and supplemental natural gas. These gases are supplied in separate lines, which must be monitored by meters prior to delivery of the fuel gas to the large gas reciprocating engines responsible for energy production.
With its thermal mass flow sensor design, the ST98 Flow Meter provides direct mass flow measurement without the need for additional temperature or pressure sensors or density calculating devices. The meter’s insertion style configuration makes it simple to install in existing piping without cutting the pipe or welding, offering minimal interruption to plant operations.
Designed for demanding environments, the rugged ST98’s thermal mass flow sensing element is constructed with two all-welded 316L stainless steel thermowells, protecting two matched platinum precision resistance temperature detectors. One RTD is heated relative to the reference RTD, and the temperature difference between the two is proportional to the process gas mass flow rate.