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FCI Offers ST102A Air/Gas Thermal Mass Flow Meter Featuring Advanced Dual-Element Averaging System

The future-ready newST102A Air/Gas Thermal Mass Flow Meter from Fluid Components International (FCI) features an advanceddual-element averaging system, improving installation repeatability and accuracy for larger diameter pipes and ducts.

ST102A-0813 Pipe Duct Flow Meter

Flow measurement applications involving line sizes 12 inches [305 mm] or greatercan realize improved installation accuracy and repeatability byaveraging the flow rates of two elements. Distorted, swirlingand non-repeatable flow profiles can result in decreasedaccuracy of single point meters. It is often impracticalor impossible to provide the required straight-run for a fullydeveloped flow profile in large lines.

The new Model ST102A Flow Meter overcomes these flow profile concerns with a simple, economicaldual-element averaging system. The transmitter electronicsaverage the input from two independent flow elementsinto a single output. Each flow element can be independentlyconfigured for insertion length and process connection toallow installation flexibility. One flow element can be integralwith the flow transmitter, or both can be configured as remotefor easier access and visibility to the digital display/optical four button user interface. The flowtransmitter also provides independent information for eachflow element, saving time when performing service checks.

FCI’s ST102A Flow Meter and the entire ST100 SeriesFlow Meter set a new industry benchmark in process and plant air/gas flow measurement, offering the most feature-rich and function-rich electronics available. Theirperformance delivers unsurpassed adaptability and value to meet plant gas flow measurement in large line applications for today and tomorrow.

Whether the need is for traditional analog outputs, or digital bus communications such as HART, Foundation Fieldbus, Profibus or Modbus, the ST100 Series is the solution.Should a plant’s DCS or PLC interface change over time or an upgrade be desirable, the ST102A Flow Meter adapts as necessary with a plug-in card replacement that can be changed out in the field.

The ST100 Series Flow Meter’s unique graphical, multivariable, backlit LCD display/readout brings new meaning to the term “process information”. It provides theindustry’s most comprehensive information with continuous display of all processmeasurements and alarm status, and the ability to interrogate for service diagnostics.

The user-friendly ST100 Series Flow Meter stores up to five uniquecalibration groups to accommodate broad flow ranges, differing mixtures of the same gas and multiple gases, and obtains up to 1000:1 turndown. 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 the first thermal flow meter to offer three different types of flow sensors to best match user applications. The FPC-style features an integral flow conditioner and protective shroud optimized for compressed air and clean gas applications. The fast-response, general purpose FP-style features a protective shroud and is the sensor used with FCI’s VeriCal™ in-situ calibration option. For wet or dirty gases, or erratic flows, the unshrouded S-style facilitates easy cleaning and provides a smoothed response.

The ST100 Series can be calibrated to measure virtually any process gas, including moist gas, mixed composition gases and dirty gases. The basic insertion style air/gas meter features a thermal flow sensing element that measures flow from 0.25 to 1000 SFPS (0.07 NMPS to 305 NMPS) with accuracy of ±0.75 percent of reading, ±0.5 percent of full scale.

Designed for rugged industrial processes and plants, ST100 Series is suitable for service up to 850ºF (454ºC) and are available with both integral and remote (up to 1000 feet [300 meters]) electronics versions. The ST100 is agency approved for hazardous environments, including the entire instrument, the transmitter and the rugged, NEMA 4X/IP67 rated enclosure. Instrument approvals includeFM, FMc, ATEX, IECEx, InMetro, GOST, and NEPSI.

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