Honeywell Fire Sentry FS20X Fire and Flame Detector Conventional

Conventional and older technology UV/IR detectors, using narrow band

4.3 micron IR sensors, will not respond to smoky fires or if the detector

lens is contaminated with oil and other substances since both UV and

4.3 micron signals are attenuated, obscured or absorbed by thick smoke

or detector lens contaminations. Also, these old technology UV/IR

detectors will not alarm to any fire if they are installed behind ordinary

window glass.

The Fire Sentry FS20X detector uses advanced patented algorithms for

signal processing and fire and flame analysis is designed to alarm to all

types of fires in all industrial environmental conditions. If the detector’s

UV signal is degraded due to heavy smoke or a contaminated lens, the

Fire Sentry FS20X’s patented* WideBand IR™, Near Band IR and Visible

sensors will still alarm to fire but at a reduced sensitivity and slower

response time.

Dual microprocessors provide a high level of fail-safe operation

combined with fast and reliable performance. The Master Microprocessor

performs high-speed digital sampling and signal processing calculations;

while the slave microprocessor handles various sensor data, performs

communications, self-diagnostics and provides interface versatility; and

additional memory for storing Event Log and FirePic™ data.

The Fire Sentry FS20X detector has a detection range in excess of 200

feet (very high sensitivity setting) for the detection of a one square-foot

Heptane reference fire and has a cone of vision greater in volumetric

coverage than most UV/IR detectors. This means fewer detectors can be

used as compared to other manufacturers’ detectors.