Explosion Proof & Intrinsically Safe Flow Switches - Stainless Steel - Multi Voltage 24V 120V 240V

The FL-A Series Flow Switch is highly versatile and can be used in a multitude of fluid applications where a reliable flow indication is required. Typical applications include providing an alarm signal when emergency safety showers or eyewash stations are operated, protecting pumps, engines, motors, and burners from low flow, and allowing automatic starting of ancillary pumps and heaters based on detected flow rate.

The FL-A Series flow switch is a robust paddle-type design utilizing stainless steel 316L wetted parts, guaranteeing long life. Designed to be mounted in horizontal pipework, the switch is available either pre-installed in an equal tee ready for direct fitment into customer pipework, or supplied without a tee when it is desirable to screw the switch unit directly into an existing process connection. Models are available with process connections from 1/2" to 2".

Utilizing proven dry contact switch technology allows them to be used across a wide temperature range whilst providing output signals suitable for PLC monitoring and/or driving beacons or sounders, where the 24A in-rush capability ensures that the switch can safely handle any start-up current surge. Volt-free SPCO/SPDT (Form C) contacts are offered as standard, with an option of DPDT (2x Form C). Operating temperature is from -60°C to +120°C.

The FL-A Series is available either hardwired or with one of three wireable options (W, WL, WLR), which utilize our pioneering integrated junction box/connection head design. Euroswitch wireable flow switches alleviate add-on components such as adaptors and junction boxes, and allow installation where space is at a premium.

Enabling full compliance with the “Emergency Eyewash and Shower Equipment” standard ANSI / ISEA Z358.1-2014, our FL-A Series provides the ability to monitor the minimum flow requirement for eye and face wash stations of 3.0 gallons (11.4 litres) of water per minute in pipe sizes from 1/2” to 1-1/4”. The unique ability to detect this low flow rate in 1-1/4” pipe size allows manufacturers of eye/face wash and shower combination stations to use a common pipe size throughout the station, allowing a single Euroswitch FL series unit to be installed without having to reduce and adapt pipe sizes, thereby reducing costs and complexity.

FL Series are fully compatible with our battery-powered Euroswitch Wireless Technology to enable transmission of condition monitoring and alarm signals in mesh networks and via IoT protocols such as SigFox, in all applications including hazardous and explosion-proof environments.