SS4-A2 | Honeywell UV Flame Detector

Honeywell · Fire & Life Safety

Description  The SS4-A2 is an advanced ultraviolet/infrared (UV/IR) flame detector designed to provide high-speed flame detection with a wide field-of-view and enhanced false alarm immunity. It features fast response times, adjustable sensitivity, and robust construction suitable for hazardous industrial environments.     Technical Specifications  Condition New/Never Used Surplus Brand Honeywell Category Fire Safety Part Number SS4-A2 Subcategory Smoke Detector Detection Technology UV/IR (dual spectrum) Sensitivity Range Adjustable: 4.5 m to 18 m for 0.1 m² gasoline fire Response Time 2–5 seconds at 18 m Field of View 120° cone (60° from on-axis) Spectral Sensitivity UV: 185–260 nm; IR: 0.7–3.5 µm; Visible: 400–700 nm Input Voltage 24 VDC nominal (20.5–34 VDC range) Power Consumption 68 mA (normal), 75 mA (alarm), 95 mA (analog) Output Relays Fire (NO/NC), Verify (NO/NC), Fault (NO/NC) Relay Ratings 0.5A @ 120 VAC, 1.0A @ 24 VDC (non-inductive) Current Output Option 0–20 mA source signal Operating Temp. -40°C to +85°C (-40°F to +185°F) Humidity 10–98% RH, non-condensing Ingress Protection NEMA 4, IP66 Weight 4.20 lbs       Information About SS4-A2 The SS4-A2 is a flame detector built to detect hydrocarbon-based fires with rapid response and reliability in extreme environments. It uses dual-spectrum detection—ultraviolet and wide-band infrared—to improve detection accuracy and reduce false alarms. Its sensitivity settings can be tuned based on the distance and application, ensuring flexibility in coverage, whether for smaller protected spaces or extended outdoor zones. The device includes selectable latching or non-latching alarm relays, a fault relay, and a verify relay with programmable delay to confirm the presence of sustained flames. Key Features: Dual Spectrum Detection: Utilizes UV (185–260 nm) and IR (0.7–3.5 µm) bands for flame detection, ensuring reliable hydrocarbon fire recognition while minimizing false alarms. Adjustable Sensitivity and Response Time: Detects a 1 sq. ft. gasoline flame at up to 18 meters in 2–5 seconds; configurable for closer ranges as needed. Multiple Relay Outputs: Includes fire alarm, fault, and verify relays with both NO and NC contacts, supporting latching/non-latching fire output and programmable verify delay (0–30 seconds). Hazardous Location Certification: FM and CSFM approved for Class I, Division 1, Groups B, C, D environments, with IP66 enclosure integrity. Rugged Construction: Powder-coated aluminum or stainless steel options available; MIL-STD-810C compliant for vibration resistance; swivel mount included. The SS4-A2 provides fast, precise, and durable flame detection for mission-critical industrial fire safety applications.

Brand: Honeywell · Category: Fire & Life Safety

Key features

• Dual Spectrum Detection: Utilizes UV (185–260 nm) and IR (0.7–3.5 µm) bands for flame detection, ensuring reliable hydrocarbon fire recognition while minimizing false alarms.
• Adjustable Sensitivity and Response Time: Detects a 1 sq. ft. gasoline flame at up to 18 meters in 2–5 seconds; configurable for closer ranges as needed.
• Multiple Relay Outputs: Includes fire alarm, fault, and verify relays with both NO and NC contacts, supporting latching/non-latching fire output and programmable verify delay (0–30 seconds).
• Hazardous Location Certification: FM and CSFM approved for Class I, Division 1, Groups B, C, D environments, with IP66 enclosure integrity.
• Rugged Construction: Powder-coated aluminum or stainless steel options available; MIL-STD-810C compliant for vibration resistance; swivel mount included.

Specifications

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