FCI ST100 Series thermal mass flow meter

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The ST100 Series thermal mass flow meter from Fluid Components International (FCI) now provides a modular design so that the flow meter can be adapted as necessary with a plug-in card replacement that can be changed out by plant technicians in the field. The meter can provide conventional 4-20 mA analog, frequency/pulse, alarm relays or digital bus communications such as HART, Foundation Fieldbus, Profibus or Modbus.

The ST100 flow meter’s backlit LCD provides comprehensive information with continuous display of all process measurements and alarm status, and the ability to interrogate for service diagnostics.

The ST100 measures gas mass flow rate, total flow, temperature and pressure depending on the model family, and 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 onboard data logger with a removable micro-SD memory card capable of storing 21 million readings is also provided.

With the ST100, FCI offers three different types of flow sensors to best match user applications. The FPC style features an integral flow conditioner and protective shroud for compressed air and clean gas applications. The FP style is a general-purpose design with a protective shroud. For applications with wet or dirty gases, or erratic flows, the unshrouded S style facilitates easy cleaning and provides a smoothed response.

The ST100 Series comprises two core model families. The ST family measures both mass flow and temperature, and the STP family also measures pressure.