The future-ready ST100 Series Thermal Mass Air/Gas Flow Meter from Fluid Components International (FCI) has received ATEX and IECEx approvals, assuring FCI’s customers that the ST100 Flow Meter has been designed and tested for safe operation in potentially hazardous environments.

The ST100 Flow Meter has received ATEX and IECEx approval, and its enclosure is ATEX and IECEx certified as flame-proof and protected from dust ignition.  The ST100’s ATEX and IECEx approvals are as follows: Ex d IIC T6/T1 Gb Ta = -40°C to +65°C; Ex tb IIIC T85°C/ T450°C Db Ta = -40°C to +65°C; IP67.  These approvals specify design criteria for flow meters and other electrically-powered instruments for use in areas where combustible gases may be present.

Whether the need is for 4-20 mA analog, frequency/pulse, alarm relays or digital bus communications such as HART, Fieldbus, Profibus or Modbus, the ST100 is the solution. 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.

It is also the first thermal flow meter to offer three different types of flow sensors to best match user applications.  The fast-response FPC-style is a fast response features an integral flow conditioner and protective shroud optimized for compressed air and clean gas applications.

Designed for rugged industrial processes and plants, ST100 Flow Meters include service up to 850ºF (454ºC) and are available with both integral and remote (up to 1000 feet [300 meters]) electronics versions.