Fire and Smoke

Question 1

Which smoke detector has radioactive components?

Answer 1

Ionization detector

Question 2

What are ionization detectors used for?

Answer 2

Invisible smoke (< 0.3um) such as during incipient phase or fast moving flame fires

Question 3

What are photoelectric light scattering detectors used for?

Answer 3

Best for larger smoke particles ( > 0.3 to 10um) such as in a smoldering phase or slowly developing fires

Question 4

What are laser smoke particle detectors used for?

Answer 4

Good for 0.001 to 10 um particles. Due to compact size can be used in ASD systems

Question 5

What are cloud chamber detectors used for?

Answer 5

Best for incipient phase as its good for sensing arcing wires or overheating of insulation