Honeywell Fire Sentry SS4 Fire and Flame Detector



Honeywell Fire Sentry SS4 Fire and Flame Detector

Product Overview

The Fire Sentry SS4 series is an optoelectronic digital fire and flame detector that utilizes leading UV and UV/IR technologies, including models such as SS4-A, SS4-AS, and SS4-AUV. It has successfully operated in numerous installation sites worldwide, effectively detecting various types of fires and minimizing false alarms.

Characteristics of each model

SS4-A

Representing the world's outstanding UV/IR photoelectric flame detector technology, it adopts a multispectral design that can sense the radiation energy of ultraviolet (UV), visible light, and wideband infrared (IR) spectra, and can detect all types of open flames.

To eliminate common false alarms that may occur with single UV, single IR, dual IR, or dual-mode UV/IR detectors, its FireLogic signal processing requires simultaneous evaluation of UV, visible light, and wideband IR radiation energy before alarm, optimizing fire alarms through real-time signal processing algorithms to almost eliminate false alarms.

SS4-AS

We optimized the detection of hydrogen, ethanol, methanol, and methane (natural gas) fires by processing UV, IR, and visible light (VIS) spectral ranges using reinforced day blind UV, quantum effect IR, and VIS sensors, which can respond to type A, B, and C open flames.

SS4-AUV

Representing leading UV optical flame detector technology, it only senses the radiation energy of the ultraviolet (UV) spectrum and is suitable for indoor applications without UV sources such as welding.

Application scenarios

Including petrochemical facilities and refineries, power plants, aircraft hangars, silane and hydrogen storage facilities, gas turbines and power plants, gas compressor stations, warehouses, semiconductor industry, etc.

Operation and Technical Specifications

Operation mode

Powered by a standard 24V DC power supply, it can be connected to approved fire alarm panels or standard PLCs. After power on, a self check will be performed, and the fault relay will reset to display no faults. The front LED will flash every ten seconds to indicate that the power is on.

The microprocessor analyzes the continuous spectral data stream from the sensor array, activates the alarm relay upon alarm, and stores all pre fire spectral data in non-volatile memory, FirePic ™  The data can be used to speculate on the cause of the fire.

As FS2000 ™  As part of the system, the SS4 series detectors use a four wire bidirectional RS-485 FireBus ™  Communicate with CM1-A controller.

Technical specifications

Sensitivity: The detection distance for a 0.1 square meter (1 square foot) gasoline fire can be adjusted between 18 meters (60 feet), 14 meters (45 feet), 9 meters (30 feet), and 4.5 meters (15 feet).

Response time: The response time to a 0.1 square meter (1 square foot) gasoline fire at 18 meters (60 feet) is 2-5 seconds.

Field of view: 120 degree cone (60 degrees off-axis).

Spectral sensitivity: UV 185-260 nanometers; SS4-A and SS4-AS also include wideband infrared 0.7-3.5 microns and visible light 400-700 nanometers.

Input power supply: nominal 24Vdc (20.5-34Vdc).

Power consumption: The relay version operates normally at 68mA and has an alarm state of 75mA; the analog version has an alarm state of 95mA.

Output relay: The fire alarm relay has NO and NC contacts, which can be switched between locked and non locked modes; The fire verification relay has NO and NC contacts, and the time can be adjusted between 0-30 seconds; The faulty relay has NO and NC contacts. The rated values of the relay contacts are 0.5A at 120Vac and 1.0A at 24Vdc (non inductive). During normal operation, the faulty relay is powered on while other relays are powered off.

Working temperature: -40 º C to 85 º C (-40 º F to+185 º F).

Humidity range: 10-98% RH, no condensation.

Weight: Stainless steel version 3.4kg (7.5 pounds); Aluminum version 1.8kg (4 pounds).

Shell: Copper free aluminum (content less than 0.4%) powder coating, compliant with NEMA4 (IP66), tamper proof, with integrated dual 3/4 "NPT conduit opening or optional M25, provided with stainless steel shell.

Certification: FM Class I Zone 1 and Zone 2, Groups B, C, and D; Class II, Zone 1 and Zone 2, Groups E, F, and G; Class III; ATEX, IECEx, etc. FMEDA complies with the safety requirements of IEC 61508.

Vibration: Meet or exceed MIL Spec 810 C method 514.2, curve AW.

Installation: Rotating bracket assembly.

Warranty: Two years from the date of factory shipment.

Output options: 0-20mA "source" output.