FCI ST98L in-line mass flowmeter

The ST98L in-line mass flowmeter from Fluid Components International (FCI) provides a reliable flow measurement solution for virtually any air or gas mixture in small process line sizes from 25 to 50 mm.

Suitable for biogas recovery, food/chemical/pharmaceutical process lines, boilers and burners, the flowmeter combines thermal dispersion mass flow sensing and advanced electronics with exacting fluid calibration in a choice of rugged, industrial enclosures. It comes in two different flow element styles that are application specific. Select the -F style element for applications in dry, clean air/gases with fluid temperatures up to 177°C. The -F design incorporates FCI’s unique equal mass sensor in smaller diameter thermowells for faster response time and improved repeatability in processes with dynamic temperature swings.

The -S style flow element is suitable for demanding applications involving dirty or erosive fluids, high moisture content gas or a pulsating flow. The -S element features more robust, thicker wall thermowells and an unshrouded equal mass sensor element that provides a noise-filtered response, extended erosion resistance and easier cleaning.

In wastewater treatment digesters or landfill gas recovery with wet compressed air or gas with erosive particulates, the -S sensor element provides good accuracy.

The flowmeter provides precision gas flow rate and totalised flow and temperature measurement. It features high accuracy to ±1% of reading, 0.5% of full scale. The unit has repeatability to ±0.5% of reading and is temperature-compensated for accurate measurement under variable environments.

Operating over a flow range from 0.01 to 3140 Nm³/h, the unit features a turndown ratio that is factory preset from 10:1 up to 100:1 within the calibrated flow range and operates at pressures up to 17 bar (g).