Fluid Components International (FCI) ST100 Series Thermal Flow Meter

The rugged ST100 Series Thermal Flow Meter from Fluid Components International (FCI) provides precision mass flow measurement, making it useful for engineers and operators responsible for measuring gas production from digester tanks at municipal or industrial wastewater treatment operations. With its no-moving parts and simple insertion-style design, as well as comprehensive, global HazEx approvals, the meter is suitable for digester gas flow measurement.

The meter can be calibrated for the specific digester gas mix composition and processes temperature conditions in flow ranges from 0.07 to 305 NMPS and with accuracy to ±0.75% of reading, ±0.5% of full scale. It can be installed in the pipe with a simple, retractable compression fitting or through a ball valve for easy access.

When selecting the meter, users have multiple options to communicate with DCS, PLC or SCADA, including 4–20 mA analog, frequency/pulse or certified digital bus communications of HART, Foundation Fieldbus, Profibus PA or Modbus RS485. Its graphical, multivariable backlit LCD display provides a sophisticated, continuous readout of all process measurements and alarm status for easy on-site viewing by technicians, and it has the ability to query for service diagnostics.

Included are a USB port, set-up and configuration software, an onboard data logger and a 3-point in situ calibration check capability. The transmitter/electronics can be integrally mounted with the flow element or may be remote mounted to 305 m away.

The transmitter enclosure is NEMA4X/IP67 rated and available in painted aluminium or stainless steel. HazEx agency approvals are on the entire instrument, not just the enclosure, and include FM, FMc, ATEX, IECEx, EAC/TRCU, CPA, NEPSI and Inmetro. All are CE approved.