Thermal flow meter optimized for biogas applications
Mike Edwards
Products FCI Fluid Components International
The ST80 series thermal flow meter from Fluid Components International (FCI) is for biogas flow measurement applications. Units have international approvals for Div.1/Zone 1 and are SIL compliant.
The units feature the FCI’s Adaptive Sensor Technology (AST), a patented hybrid sensor drive that combines constant power (CP) and constant temperature (CT) thermal dispersion sensing technologies in the same instrument.
The flow meters are suitable for pipe diameters from 25 to 2500 mm and air/gas temperatures up to 454°C.
They feature accuracy of ±1% of reading, ±0.5% of full scale and repeatability of ±0.5% of reading with flow rates as low as 0.25 up to 1000 SFPS (0.07 to 305 NMPS) and 100:1 turndown.
Standard outputs include dual, NAMUR NE43 compliant 4-20 mA analog outputs, HART (version 7), Modbus 485 and a USB port.
The optional backlit LCD display provides digital and bar graph readouts of the flow rate and temperature, totalized flow, alarms, diagnostics feedback and even a user defined label/tag field.
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