Honeywell FS24X-911-21-1 Flame Detector | ATEX & IECEx Certified

Technical Specifications Breakdown

Key parameters for the FS24X-911-21-1 are listed below for quick reference:

Industry Applications and Cost Efficiency

Its 90° horizontal field of view and 200-foot sensitivity reduce the number of detectors needed per area, lowering installation and maintenance costs. The 4-20 mA output integrates easily with existing control systems, avoiding expensive retrofits. With FM, cFM, ATEX, and IECEx approvals for Class I, Zone 1, you gain compliance without extra hardware.

Installation and Setup Guidance

Mount the detector with the two 3/4" NPT conduit entries facing downward to prevent moisture ingress. Use stranded conductors only, sized between 12 AWG and 22 AWG (2.50 mm to 0.762 mm). Ensure the input voltage stays within 18 VDC to 32 VDC to avoid false alarms or damage. The analog output can be configured as source or sink, matching your PLC or DCS input card. Always verify the field of view alignment to cover the protected area completely.

Maintenance and Reliability

Periodically inspect the lens for dirt or contamination, as a dirty window can reduce sensitivity and increase false alarms. The IP66 / NEMA 4X enclosure protects against dust and high-pressure water, but regular visual checks are recommended. Operating temperature ranges from -76° F to +185° F (-60° C to +85° C) for the FS24X-9 model, ensuring performance in extreme climates. The vibration rating meets Mil Spec 810C, Method 514.2, Curve AW, making it suitable for heavy industrial environments.

Compatibility and Integration

This detector supports multiple output options: fault alarm relay, auxiliary relay, 4-20 mA analog, FireBulls, or Modbus RTU. The 0 to 20 mA output provides diagnostic signals for fault, dirty lens, normal, and alarm conditions, enabling predictive maintenance. Relay contacts rated at 1 Amp @ 24 VDC resistive allow direct connection to alarm panels. The flexible communication options reduce the need for additional converters, saving cost and space.

Selection Guide and Purchasing Advice

When selecting a flame detector, consider the hazard area classification, field of view, and output requirements. The FS24X-911-21-1 is a new, factory-packed unit with a 12-month warranty. Contact AutoDCSTech to confirm availability and lifecycle status before ordering. Our team can help you match the right detector to your application, ensuring safety and operational efficiency.