FCI ST100 aeration flow meter with Profibus Bus PA

Fluid Components International’s ST100 Thermal Mass Flow Meter is suitable for use in wastewater treatment plants for flow measurement in aeration basins. It is Profibus PA compatible, providing accuracy combined with digital bus communication flexibility to reduce air flow energy costs.

The current version of Profibus PA includes functions to simplify the handling of field devices, and enable plant system retrofits. The meter’s insertion style configuration makes it a simple drop-in replacement. Engineers and technicians can manage multiple fluid flow process variables and configure the meter remotely from the safety of the control room.

The meter is also suitable for us with Fieldbus, HART, Modbus, 4-20 mA analog, frequency/pulse or alarm relays. If a plant’s communication needs change, the meter adapts with a plug-in card replacement that can be changed out in the field.

The meter’s LCD/readout provides continuous display of all process measurements and alarm status, and the ability to interrogate for service diagnostics. The meter stores up to five unique calibration groups to accommodate broad flow ranges, differing mixtures of the same gas and multiple gases, and obtains up to 1000:1 turn down. Also included is an onboard data logger with a removable 2 GB micro-SD memory card capable of storing 21 million readings.

The meter can be calibrated to measure wet gas, mixed gases and dirty gases. The basic insertion style air/gas meter features a thermal flow sensing element that measures flow from 0.07 - 305 NMPS with accuracy of ±0.75% of reading, ±0.5% of full scale.

Designed for rugged industrial processes and plants, the meters include service up to 454°C and are available with both integral and remote up to 300 m electronics versions. The meter is approved for hazardous environments. Approvals include: SIL 1, ATEX, IECEx, FM, FMc, CPA, Inmetro and GOST-R.