21: TIC

Question 1

Categories of IR emitters: (3)

Answer 1

Passive (furniture)
Active (people)
Dynamic (electric appliances)

Question 2

descrieb image intensifiers and infrared detectors.

Answer 2

Image intensifiers: Amplify existing visible light (Camera’s night shot)

Infrared detectors: View IR sources regardless of light conditions

Question 3

Thermal contrast: (TIC chapter)

Answer 3

Thermal contrast is the difference between 2 or more items when viewed with the TIC.

Bonus - Their image will be relative to the detector’s sensitivity and the variance of the temps of the room.

Question 4

Thermal inversion: (TIC chapter)

Answer 4

Thermal inversion occurs when an object changes shade even though its temperature has not. Is a result of a change in temp of the environment.

Question 5

Thermal layering: (TIC chapter)

Answer 5

Occurs when effective vent is not completed.

Question 6

3 Keys to effective TIC operation:

Answer 6

Orientation
Interpretation
Communication

Question 7

Limitations of the TIC.

Answer 7

Glass
Steam
Water

Question 8

How does heat travel? (3)

Answer 8

Convection
Conduction
Radiation

Question 9

Scanning priorities for the TIC: (4)

Answer 9

Ceiling for temp variation and elevation
Centre of room for exits & openings
Floor for hazards and pts
Behind for anything missed

Question 10

Three modes of operations on TIC:

Answer 10

High sense (room temp or cooler)
Mid sense (240<65C)
Low sense mode (240C +)