The Euroswitch FL-A Series is a rugged paddle-type flow switch designed for reliable flow indication in a wide range of fluid applications. Constructed with 316L stainless steel wetted parts, it guarantees long life and exceptional corrosion resistance, making it suitable for demanding industrial environments. The switch is available with SPCO/SPDT (Form C) or DPDT (2x Form C) dry contacts, providing volt-free outputs for PLC monitoring, alarm beacons, or direct control of pumps and valves.

Key Features

• 316L Stainless Steel Construction: All wetted parts are 316L stainless steel, ensuring excellent corrosion resistance and long service life in harsh environments.
• High Pressure and Temperature Capability: Rated for maximum working pressure of 138 bar (2000 psi) and operating temperatures from -60°C to +125°C (wide temperature version), suitable for demanding applications.
• 24A Inrush Capability: The dry contact switch can safely handle start-up current surges up to 24A, making it suitable for direct control of motors, pumps, and other inductive loads.
• Multiple Switch Options: Available with SPCO/SPDT (Form C) as standard, or DPDT (2x Form C) for applications requiring two independent outputs.
• High Environmental Protection: Rated IP66, IP67, IP68 (24 hours at 30m depth), and NEMA 4X & 6P, providing protection against dust, water jets, and temporary immersion.
• Hazardous Area Certifications: Certified for explosion-proof (IECEx & ATEX Ex d db tb, UL/CSA Class I, II, III Div 1 & 2) and intrinsically safe (Ex ia) applications.
• Wireable Options: Available with integrated junction box/connection head designs (W, WL, WLR), eliminating the need for add-on components and allowing installation in space-constrained areas.
• Wireless Compatibility: Fully compatible with Euroswitch Wireless Technology for condition monitoring and alarm signal transmission in mesh networks and via IoT protocols such as SigFox.
• ANSI/ISEA Z358.1-2014 Compliance: Provides the ability to monitor the minimum flow requirement for eye and face wash stations (3.0 gallons/11.4 litres per minute) in pipe sizes from 1/2" to 1-1/4".

Technical Specifications

• Process Connections: 1/2" to 2" BSPT or NPT, available with or without equal tee.
• Mounting Orientation: Designed for horizontal pipework installation.
• Maximum Flow Rate: 60 L/min or 15 US GPM (for 1/2" tee version).
• Hazardous Area Certifications: Explosion Proof: IECEx & ATEX Ex d db tb (Zone 1 & 2, Zone 21 & 22), UL/CSA Class I, II, III Division 1 & 2; Intrinsically Safe: IECEx & ATEX Ex ia (Zone 0 & Zone 20), UL/CSA IS (Zone 0); Other Regional Approvals: EAC TRCU, INMETRO, KCs (KOSHA), PESO CCOE, ECAS ex, NEPSI CQST.
• Wireless Options: Battery-powered Euroswitch Wireless Technology with SigFox IoT protocol support.
• Housing Options: Cylindrical 316L stainless steel housing or field-wireable connection head (360° rotatable or back entry).
• Conduit Entry: 3/4" NPT-M (standard), M20 x 1.5 (field-wireable versions).

Applications

The FL-A Series is ideal for a wide range of industrial applications, including:

• Emergency safety shower and eyewash station alarm systems (ANSI/ISEA Z358.1-2014 compliant).
• Pump, engine, motor, and burner low-flow protection.
• Automatic starting of ancillary pumps and heaters based on detected flow rate.
• Process flow monitoring in chemical, petrochemical, oil & gas, and power generation industries.
• Hazardous area installations requiring ATEX/IECEx or UL/CSA certifications.
• Water treatment, HVAC, and industrial fluid handling systems.