Flow Measurement & Control


The ST100 mass flowmeter

November 2014 Flow Measurement & Control

The début of the breakthrough ST100 series thermal mass flowmeter from Fluid Components International (FCI) sets a benchmark in process and plant gas flow measurement instrumentation. The ST100 combines superior flow sensing performance with the function-rich electronics to deliver adaptability and value to meet plant gas flow measurement applications for today and tomorrow.

FCI developed the advanced ST100 series in response to countless hours of discussions with a wide range of instrument, process and plant engineers who wanted both more comprehensive measurement information as well as the flexibility to adapt to plant and process control technology they might deploy in the future.

Beyond its ability to measure, display and transmit an extensive array of parameters, it is the industry’s first thermal mass gas flowmeter designed with a migration path to tomorrow. Whether the need is for conventional 4-20 mA analogue, frequency/pulse, alarm relays or advanced digital bus communications such as HART, Foundation Fieldbus, Profibus or Modbus, the new ST100 offers a solution.

Should a plant’s needs change over time or an upgrade be desirable, the ST100 adapts as necessary with a plug-in card replacement that can be changed by plant technicians in the field. The meter’s sophisticated LCD display/readout provides comprehensive information with continuous display of all process measurements and alarm status, and the ability to interrogate for service diagnostics.

The unit measures gas mass flow rate, total flow, temperature and pressure depending on the model family. The ST100 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 turndown. An optional, patent-pending SpectraCal Gas Equivalency calibration method lets users select and switch between 10 common gases.

Also standard is an on-board data-logger with an easily accessible, removable 2-GB micro-SD memory card capable of storing 21 million readings.

The ST100 Series is comprised of two core models: the ST and STP. The ST family measures both mass flow and temperature, while the exclusive STP family adds a third parameter – pressure. The STP configuration makes it a triple-variable thermal flowmeter, measuring flow, temperature and pressure Both families include single-point and dual-element models as configurations outfitted with FCI’s exclusive in-situ calibration option, VeriCal.

The ST100 can be calibrated to measure virtually any process gas, including wet gas, mixed gases and dirty gases. The meters are designed for rugged industrial process and plant applications, including service up to 450°C. Both integral and remote electronics versions are the available. The ST100 is approved for hazardous environments, including the entire instrument, the transmitter and the enclosure.

For more information contact Chantelle Conradie, Elemental Analytics, +27 (0)11 918 6994, info@e-analytics.co.za, www.e-analytics.co.za



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