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Honeywell Fire Sentry FS7 Fire and Flame Detector

Honeywell Analytics Fire Sentry FS7 Fire and Flame Detector.

The Fire Sentry FS7-2173 electro-optical radiant energy fire detector – and the Fire Sentry FS7-2173-2RP (unitized model) with multi-spectral WideBand IR™, Near Band IR and Visible Band fire detection are designed specifically for semiconductor Clean Room fire protection applications.

The Fire Sentry FS7 fire detector provides and intelligent two-stage response to semiconductor wet bench fires:

Stage 1: Alert. This is the first-stage response to a small fire with a heat energy output of 3 kW (the equivalent of a 4-inch diameter polypropylene pool fire). This allows time for the fire to self-extinguish.

Stage 2: Alarm. If the fire does not self-extinguish, and grows to the Factory Mutual specified heat energy threshold of 13 kW (the equivalent of an 8-inch diameter polypropylene pool fire), the second-stage response is activated.

The Fire Sentry FS7-2173 is used with Fire Sentry FS7-130-SX Controller or Control Panel FSWB. Controller and Control Panel supply power to detectors monitor the status of all detectors and communicate with the detectors via the digital RS-485 communication channel. Fire Sentry FS7-2173 is supplied with a standard 20 ft. cable connector. Detectors are connected to the controller or control panel using the self-locking connectors and Fire Sentry junction boxes. This allows for fast and easy connections eliminating wiring problems. Each detector can store up to six time and date stamped FirePics™ (pre-event multi-spectral sensor array data) in non-volatile memory. Controller and control panel can also store event history table in the non-volatile memory, which contains the time and date stamped alert, alarm and fault histories. FirePics™ and event histories can be retrieved from the controller or control panel.

Fire Sentry FS7-2173-2RP unitized model’s microprocessor, with digital signal processing algorithms, continuously monitors the circuitry, sensor’s built-in self-test and verifies proper operation. Fire Sentry FS7-2173-2RP with discrete relay outputs is designed to operate as a stand-alone detector and interface with any approved fire alarm panel. The detector requires an external 24 VDC power source and is supplied with a standard 20 ft. pigtail cable. It can store up to six time and date stamped FirePics™ and 200 events in non-volatile memory. FirePics™ and event histories can be retrieved using a Fire Sentry FS7 Interface Kit and the Fire Sentry Windows-based PC software.

Honeywell FS7 Datasheet

Honeywell FS7 Brochure


  • -Multi-Spectral digital electro-optical radiant energy infrared fire detector
  • -Unique two-stage fire detection response
  • -Immune to false alarm sources
  • -NOT affected by absorbing smoke, gasses or chemical vapors
  • -NOT sensitive to background radiant energy from electric heaters and ovens
  • -Detects hydrocarbon and non-hydrocarbon fires
  • -Rugged leak-proof, heat-sealed, acid-resistant, injection-molded polypropylene housing
  • -Wide 120° field-of-view
  • -Digital communication with RS-485 interface
  • -FirePic™; time and date-stamped digital fire signatures
  • -Built-in detector automatic self test
  • -Unitized model design for stand-alone operation