FCI ST75 Air/Gas Flow Meter for biomass gasification plants

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Process engineers responsible for managing biomass gasification plants will find the ST75 Series Air/Gas Flow Meter from Fluid Components International (FCI) operates in hot, wet, dirty environments to provide measurement of mixed composition gases, including hydrogen (H₂), carbon monoxide (CO) and trace methane (CH₄). With its thermal dispersion mass flow sensing element, the flow meter can be configured to operate in cramped areas with limited pipe runs and is safe for potentially flammable or explosive combustible gas environments.

The product operates over a wide flow range in mixed gas environments from 0.01 to 950 NCMH, depending on line size. For variable process conditions, such as those in biomass gasification plants, the meter is factory preset to a turndown range of 10:1 to 100:1. It features accuracy to ±2% of reading with ±0.5% repeatability in line sizes from 6 to 51 mm. The unit's precision flow element has a no-moving-parts design.

Suitable for crowded equipment areas in biomass gasification plants, the insertion-style flow meter features remote mounting capabilities for hazardous plant environments. The transmitter, which includes a full digital display, can be mounted up to 15 m away from its thermal mass flow sensor in the process piping and connected via two 0.50″ FNPT or M conduit connections.

The durable flow meter withstands process temperatures from -18 to 121°C. It operates at pressures up to 16.5 bar (g) with a standard t-fitting (NPT female) process connection. With a tube process connection, the meter withstands 41 bar (g).

The product eliminates the need for additional pressure and temperature sensors, flow computers or other devices. Requiring virtually no maintenance, the FM and CSA approved flow meter is enclosed in a rugged, all-metal, dust- and water-resistant NEMA Type 4X (IP66) rated package designed for Class 1, Div 1 hazardous area installations.