Honeywell FSL100-IR3 Flame IR3 35m Zone 2/22 Red

The Honeywell FSL100-IR3 is a triple infrared (IR3) flame detector from the FSL100 series, for indoor and outdoor use including ATEX Zone 2/22 areas. It detects a 0.1 m² n-heptane fire at up to 35 m within 10 seconds and is particularly suited to liquid hydrocarbon and dirty, smoky fires, being less affected by window contamination. Relay and 4-20 mA outputs let it connect to fire alarm control panels, relay-driven equipment or PLCs.

Key features

• Triple IR sensing with flame flicker-frequency analysis for false alarm rejection
• Good resistance to direct and reflected sunlight, artificial light, arcs and electrical discharges
• Alarm and fault relays plus a stepped 4-20 mA output as standard
• Connects to fire panels using end-of-line and alarm resistors
• Comprehensive automatic self-test plus manual self-test
• Pressure compensating element to avoid moisture build-up in the housing
• Lightweight GRP housing in high-visibility red with pre-formed knockouts
• Optional swivel mount (ordered separately); FSL100-TL and FSL100-TLX test lamps available

Technical specifications

• Range: 35 m, alarming within 10 seconds to a 0.1 m² n-heptane fire
• Cone of vision: 90° minimum, horizontal and vertical
• Supply voltage: 10-28 V DC (12-24 V DC nominal)
• Operating current: 25 mA at 24 V DC (normal)
• Relays: alarm and fault, SPDT, 30 V DC 2 A, 60 W max.
• Current output: 4-20 mA stepped (0 mA fault, 2 mA optical fault, 4 mA normal, above 20 mA alarm)
• Cable entry: M20, gland supplied for 5.5-13 mm cable; terminals 0.5-1.5 mm²
• Start-up time: under 10 seconds
• Housing: glass reinforced polyester (GRP), UV resistant, V-0 (UL 94)
• Dimensions: 125 x 80 x 57 mm
• Weight: 465 g
• Ingress protection: IP65
• Operating temperature: -40 °C to +70 °C
• Approvals: EN 54-10, FM 3260, ATEX Zone 2/22