Smoke Detection

Question 1

smoke detector

Answer 1

are 3 different type:

• light refraction
• ionization
• change in resistance

Question 2

area of smoke detector

Answer 2

cargo
toilet
avionics bay
lavatory
cabin work
dressing room

Question 3

ligth sensor

Answer 3

designed to respond to a change in visible light or a change in infrared radiation. When smoke is introduced into the chamber light is reflected from the smoke particles and falls on the photoelectric cell

Question 4

ionization

Answer 4

radioactive material bomard N2 and O2, this produce a little amount of electric current, in presence of smoke the different of voltage is detect

Question 5

Change in resistance

Answer 5

Semiconductor material - uses two heated solid state detecting elements. Each element is enclosed in a coating of semiconductor material. The material will
absorb ions of carbon monoxide or nitrous oxide thereby changing the conductivity of the
material.