Which device is used to detect heat in a fire alarm system?

Which device is used to detect heat in a fire alarm system?

• A. Heat detector
• B. Flame detector
• C. Strobe
• D. Smoke detector

Answer: (A)

Detecting heat in a fire alarm system is done by a heat detector. These sensors trigger when the temperature reaches a set point or rises rapidly. Heat detectors come in fixed-temperature types (activate at a specific temperature) and rate-of-rise types (activate when the temperature increases quickly). They’re useful in areas where smoke detectors might create false alarms due to dust, humidity, or strong air flow. When they sense heat, they send a signal to the fire alarm control panel to start the alarms. Flame detectors look for flame signatures, smoke detectors sense smoke particles, and strobes are a type of notification device rather than a sensor.

Detecting heat in a fire alarm system is done by a heat detector. These sensors trigger when the temperature reaches a set point or rises rapidly. Heat detectors come in fixed-temperature types (activate at a specific temperature) and rate-of-rise types (activate when the temperature increases quickly). They’re useful in areas where smoke detectors might create false alarms due to dust, humidity, or strong air flow. When they sense heat, they send a signal to the fire alarm control panel to start the alarms. Flame detectors look for flame signatures, smoke detectors sense smoke particles, and strobes are a type of notification device rather than a sensor.