Air/Gas Flow Meter Enables GHG Monitoring

The ST51 air/gas flow meter from Fluid offers industrial plant engineers a reliable solution to GHG monitoring and supports the EPA's BACT (Best Available Control Technology) initiative. Flow meters such as FCI's ST51 support accurate GHG monitoring by providing valuable clean-air data necessary for industrial process control.

The ST51 supports BACT (Best Available Control Technology) practices, which require technologies that achieve the maximum degree of emissions control that can be achieved by a particular facility and is based on a case-by-case decision that takes into account technical feasibility, cost and other energy, environmental and economic impacts. The ST51 flow meter is suitable for the measurement and monitoring of industrial plant greenhouse gases. The ST51 features a no-moving parts design that is non-clogging and operates over a wide flow range with low-flow sensitivity.

It's packaged in an explosion-proof transmitter and the calibration is matched to the user's actual gas composition and installation conditions. FCI designed the ST51 flow meter to measure and monitor GHG per the EPA's requirements. It features a thermal mass, insertion-style flow element with flow accuracy to +/-1 per cent of reading over a flow range from 0.3 to 400 SFPS and repeatability of +/-0.5 per cent of reading. The flow element is available for use in line sizes from 2 to 24in (51 to 610mm). It operates over a turndown range of 100:1 and at temperatures from 0 to 250F (-18 to 121C). It withstands pressures up to 500psig.

The ST51 flow meter's robust thermal mass flow sensing element has no moving parts and no orifices to clog or foul to attain virtually maintenance-free service in wet, dirty biogas applications. The flow element is constructed with a 316L stainless-steel body and Hastelloy C-22 thermowell sensors to resist corrosion. It includes built-in temperature compensation circuitry for accurate, repeatable measurement year round, as temperatures rise and fall seasonally. The ST51 flow meter is rich with outputs for user interfaces and information.

Dual 4-20mA analogue outputs are user assignable to flow rate and/or temperature, and there is a 0-1kHz pulse output for totalised flow. The transmitter's digital communications include an RS-232C port and, with units that have the digital display option, there is a wireless IR link for PDA use. The ST51 is available through FCI's GHG Reporting Fast Track Initiative, which is a three-prong programme.

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