False Alarm Immunity - Honeywell FS24X Installation Manual And Operating Manual

Fsx fire and flame detectors

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Table of Contents

4.6.2

False Alarm Immunity

The following table represents the minimum distance at which the detector did not false alarm or show

any signs of instability during exposure to the sources listed. Additionally, the sensitivity to a one

square foot n-Heptane reference pan fire in the presence of the false fire source is listed.

False Fire Source

Direct Sunlight

Modulated Sunlight

Modulated Arcwelding

Continuous Arcwelding

Resistive Electric Heater

Flourescent Lamp

Halogen Lamp

Sodium Vapor Lamp

Pelican Flashlight

Incandescent Lamp

Honeywell

Minimum Distance

with no Alarm

No Alarm

3 feet 9 inches / 1.14 meters

1 foot / 30.48 centimeters

Installation Guide and Operating Manual

Sensitivity to a 1' x 1' n-Heptane

reference pan fire in the

presence of the false fire source

50 feet /15.24 meters

25 feet / 7.62 meters

Source at 15 feet / 4.57 meters

Fire at 30 feet / 9.14 meters

Source at 15 feet / 4.57 meters

Fire at 30 feet / 9.14 meters

Source at 3 feet / 91.44 centimeters