What is a Line Detector?

What is a Line Detector?

• A. A Wire or Tubing That Can Be Strung Along the Ceiling of Large Open Areas to Detect an Increase in the Heat
• B. A Smoke Detector Mounted on a Wall
• C. A Siren
• D. A Heat Detector Mounted on the Floor

Answer: (A)

Line detectors are long sensing elements that monitor heat along a line rather than at a single point. They are installed as a continuous wire or tubing laid along the ceiling in large open spaces so that any rise in temperature along that length triggers the fire alarm. This layout is especially useful in expansive areas where individual spot detectors would be impractical. The other options describe different devices: a wall-mounted smoke detector detects smoke at one location; a siren is an audible alarm, not a detector; a floor-mounted heat detector senses heat at a single location on the floor, not along a line.

Line detectors are long sensing elements that monitor heat along a line rather than at a single point. They are installed as a continuous wire or tubing laid along the ceiling in large open spaces so that any rise in temperature along that length triggers the fire alarm. This layout is especially useful in expansive areas where individual spot detectors would be impractical. The other options describe different devices: a wall-mounted smoke detector detects smoke at one location; a siren is an audible alarm, not a detector; a floor-mounted heat detector senses heat at a single location on the floor, not along a line.