Lecture_10.2_Fire_Alarm_System

Lecture_10.2_Fire_Alarm_System - AE202 Section 10.2 Fire...

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AE202 Section 10.2 Fire Alarm Systems Purpose of Fire Alarm System o Save lives by announcing unsafe conditions o Protect property by alerting fire department Definition - Manual system o A system in which the alarm initiating device is operated manually to transmit or sound an alarm signal Definition - Automatic system o One in which the alarm initiating device is operated automatically to transmit or sound and alarm signal Initiating (Detection) Devices - Manual devices o _____________ _________ _____________ o Glass break o Vandalism o Dual action Initiating (Detection) Devices - Automatic devices Heat detectors (fixed temperature) o Senses abnormally high temperatures o Slowest to respond o Lowest false alarm rate o Applications ± Used in area where smoke and dirt is a problem ± Used in low temperature location o Rate of Rise Detectors ___________________ Smoke detectors o Ionization ± Radiation within detector ± Ionizes air and makes it conductive ± Permits current flow between electrodes
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Lecture_10.2_Fire_Alarm_System - AE202 Section 10.2 Fire...

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