ST100 air/gas flow meter obtains full HART Certification

Latest News

The ST100 Series Thermal Mass Air/Gas Flow Meter from Fluid Components International (FCI) has obtained full certification from the HART Foundation for its hardware and DD files. The certification and DD file are available for download from the HART Foundation web site.

The ST100 Series Flow Meter was developed in response to discussions with a wide range of instrument, process and plant engineers, who wanted more comprehensive measurement information as well as the flexibility to adapt to future plant and process control technology they might deploy.

Beyond continuously measuring, displaying and transmitting the industry’s most extensive array of parameters, the ST100 is the first thermal mass flow meter with a migration path.

In addition to the HART Communication Protocol, the ST100 is available with 4-20 mA analogue, frequency/pulse, alarm relays and additional digital bus communications including Fieldbus, Profibus and Modbus.

Should a plant’s needs change over time or an upgrade be desirable, the ST100 Flow Meter adapts as necessary with a plug-in card replacement that can be changed out by plant technicians in the field.

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 Flow Meter features a graphical, multivariable, backlit LCD display/readout. It provides a continuous display of all process measurements and alarm status, and the ability to interrogate for service diagnostics.

The ST100 is the first thermal flow meter to offer three different types of flow sensors to best match user applications.

The fast-response FPC-style features an integral flow conditioner and protective shroud optimised 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 claims to be the world’s first triple-variable thermal flow meter. The ST100 Series is comprised of two core model families: ST and STP.

ST meters measure both mass flow and temperature, and the exclusive STP family adds a third parameter, 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 basic insertion style air/gas meter features a thermal flow sensing element that measures flow from 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 Flow Meters include service up to 454ºC and are available with both integral and remote 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 (submitted and pending) in addition to FM and FMc include ATEX and IECEx:  Zone 1, II 2 GD Ex d IIC T4.