Fluid Components International FLT93F Flow Switch

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Plant engineers and maintenance staff responsible for the operation of positive air flow pressure and exhaust ventilation systems for cleanrooms, labs, analyser houses or production areas will find the FLT93F Flow Switch from Fluid Components International (FCI) provides a sensitive solution to monitor and alarm if their system is degrading, not operating to specifications or has shut down.

The flow switch is specifically designed for air and gas flow detection. It is both fast responding and capable of detecting even slight changes in air flow. It is available in a variety of process connections for ease of installation in most pipes, vents or duct sizes. Its universal power supply supports powering by 115 VAC, 230 VAC or 24 VDC. Its trip-point/alarm points are easily user set in the field, at the installation. It comes with fail-safe, heavy-duty dual alarm (SPDT) or DPDT relay outputs.

The flow sensor element is an all-welded design and constructed of 316L stainless steel. It has no moving parts to break or orifices to foul or clog, so there is no routine maintenance needed. The instrument is available in a choice of rugged, all-metal enclosures that are NEMA 4X/IP66 rated for long service life in demanding installations and environments. Electronics can be mounted integral with the flow element or remote mounted a distance away from hazardous areas.

For applications in potentially explosive dust or gas environments, the switch is suitable for installation in Div 1/Zone 1 areas and certified to local standards of FM, FMc, ATEX, IECEx, NEPSI, EAC, Inmetro, UKCA and EQM/ECAS. It also meets the EC directives for EMC and LVD and the flow element complies with Canadian Electrical code requirements of ANSI/ISA 12.27.01-2011 as a single seal device.