CHAPTER
5
Appendix 2: FM Performance for FS24XPlus™
Product Overview
The Honeywell FS24X Plus® is a hazardous area flame detector that uses 3IR sensors to respond
quickly to a flaming fire.
It is factory calibrated, and the robust sealed design with no moving parts allows for mounting in
harsh environments. These flame detectors are available in either a 316 Stainless Steel or Low
Copper Aluminum.
Safety
WARNING
RISK OF IMPROPER FLAME DETECTION
l Install only in areas in accordance with the environmental and hazardous area ratings.
l Carefully review mounting area and position in accordance with the FS24X Plus™ FM
Performance Appendix and this Manual to ensure optimal flame detection regarding the
angle of device and unobstructed view.
l Avoid potential sources of direct or indirect radiation in the flame detector field of view.
l Do not touch the sensors on the front of the electronics module.
l Avoid direct sunlight into the flame detector window – use provided sunshade, aim flame
detectors down at 40 degrees or more when possible, and use multiple detectors to cover
hazardous areas from different directions.
l Avoid close proximity to rapid modulation/chopping of sunlight (creating moving dark
shadows) as optical sensor performance can be reduced, e.g. close trees in the wind, rotating
blades.
l Use shielded cable for all wirings and ground the shield at one end as detailed in the Wiring
section.
l Keep all devices and wire runs away from mercury vapor lights, variable speed drives, radio
repeaters and other sources of electromagnetic interference.
l Follow local cabling and glanding rules.
l Seal all unused conduit entries and install proper drains/taps as required by local codes.
l Do not try to service parts inside the electronics module, there are no field serviceable parts.
Honeywell® FS24XPlus™ | User Manual
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