THERE ARE FIVE TYPES OF FIRE ALARM DETECTORS
FIRE ALARM DETECTORS
HEAT DETECTORS
TWO TYPES OF FIRE ALARM HEAT SENSOR DETECTORS ONE CAN OPERATE ON A DECIDED TEMPERATURE CORNERSTONE, WHERE IT WILL ACTIVATE AN ALARM IF TEMPERATURE RISES BEYOND A FIXED VALUE OR THEY CAN OPERATE IN CHANGE OF TEMPERATURE VALUES. THEY CAN WORK AS AN FUSE IN AN ELECTRICAL CIRCUIT, INSIDE DETECTOR THERE IS AN EUTECTIC ALLOY (MADE BY MIXING TWO METALS AND HAVE THE LOWEST MELTING POINT POSSIBLE) WHICH IS HEAT SENSITIVE AND AT A FIXED VALUE OF TEMPERATURE IT LIQUIFIES FROM SOLID WHICH TRIGGERS ALARM INSTANTLY AND OTHER CAN BE TRIGGERED WITH RISING IN TEMPERATURE VALUES. HEAT DETECTORS ARE MENT TO MINIMIZE PROPERTY DAMAGE AND CAN BE INSTALLED IN THE KITCHEN AND GARAGES BECAUSE THEY WON`T TRIGGER FALSE ALARMS FROM COOKING AND OTHER FUMES
HEAT DETECTORS ARE DESIGNED FOR USE IN THE EVENT OF A FIRE OUTBREAK THAT HAS YET TO START AND CAN BE USED FOR BOTH RESIDENTIAL AND COMMERCIAL BUILDINGS WHICH ON ACTIVATION SOUND AN ALARM OR SEND SIGNALS TO AUTHORITIES WITH THEIR LOCATION SO THAT FIREFIGHTERS CAN BE DISPATCHED QUICKLY
SMOKE DETECTORS
THREE TYPES OF SMOKE DETECTORS
IONIZATION
PHOTOELECTRIC
COMBINATION OF BOTH I.E (IONIZATION/PHOTOELECTRIC)
IONIZATION SMOKE DETECTOR
THE IONIZATION SMOKE DETECTOR HAVE TWO CHAMBERS THE FIRST TAKE ACCOUNTABILITY FOR ANY CHANGES IN PRESSURE AND TEMPERATURE WHILE THE SECOND CONTAINS A SMALL AMOUNT OF RADIOACTIVE ELEMENT, ALPHA PARTICLES TRAVELLING BETWEEN ELECTRODES, SMOKE ENTERS CHAMBERS DISRUPT CURRENT FLOW THIS DISRUPTION TRIGGERS ALARM
PHOTOELECTRIC SMOKE DETECTORS
PHOTOELECTRIC SMOKE DETECTORS CAN BE DESCRIBED AS FOR ITS LIGHTS PURPOSE FOR DETECTION OF FIRE WHICH CONTAINS A DARKEN CHAMBER A LIGHT SOURCE AND A PHOTOCELL ARE SEPERATED WITHIN THE SAME CHAMBER WILL BE SCATTERED WHEN SMOKE ENTERS CHAMBER TRIGGERING AN ALARM
GAS (CARBON MONO-OXIDE )DETECTORS
CARBON MONO-OXIDE DETECTORS ALSO KNOWN AS GAS DETECTORS TRIGGERS ALARM BY SENSING A SPECIFIC AMOUNT OF GAS (CARBON MONO-OXIDE) IN THE ENVIRONMENT. CARBON MONO-OXIDE GAS IS VERY HARMFUL SO IT IS ESSENTIAL TO SAFELY ESCAPE AN OUTBREAK AS SOON AS POSSIBLE
CARBON MONO OXIDE IS LIKE A GHOST AND IS ALSO REFERRED TO AS A SILENT KILLER BECAUSE ONE CAN NOT SEE, SMELL OR TASTE WHICH MAKES IT COMPLETELY UNDETECTABLE FOR HUMANS
CARBON MONO-OXIDE ARE INSTALLED WITH AN ELECTROCHEMICAL CELL WHICH TRIGGERS IN THE EVENT OF AN OUTBREAK BY SENSING CARBON -MONO OXIDE GAS AND CANNOT BE FAKED BY SMOKE OR ANY POSSIBLE COMBUSTIBLE GAS
MULTI SENSOR DETECTORS
MULTI-SENSOR DETECTORS INVOLVE A SERIES OF DETECTORS TO SENSE HEAT, OPTICAL AND GAS PERFECTLY DESIGNED TO COMPARE INPUTS COMING FROM DIFFERENT DETECTORS INSTALLED IN SOPHISTICATED EMBEDDED ALGORITHMS IN-CIRCUIT DECIDE WHETHER INPUTS COMING FROM DIFFERENT SOURCES IS ACTUALLY AN OUTBREAK OR AN FALSE ALARM.
A MULTI SENSOR FIRE DETECTORS ARE THE MOST ADVANCED AND EFFICIENT TYPE OF DETECTORS AS THEY USE SEVERAL DIFFERENT TECHNOLOGY TO DETECT FIRE INCLUDING IONIZATION, PHOTOELECTRIC AND HEAT-BASED SENSORS
FIRST MULTI-SENSOR WAS INVENTED IN 1994 AND BY THE YEAR 2003 THIS TECHNOLOGY EVOLVED INTO A DUAL IONIZATION SMOKE ALARM WITH A PHOTOELECTRIC SENSOR THAT COULD DETECT BOTH FLAMES AND SMOLD
THEY ARE VERY PRECISE IN THE DETECTION OF FIRE IN THE EARLY STAGE. THESE DETECTORS CAN EASILY BE INSTALLED AND DO NOT REQUIRE FREQUENT MAINTENANCE AND CALIBRATION LIKE OTHER CONVENTIONAL FIRE ALARMS.
