Exam Review: Temperature Measuring

Question 1

What is the purpose of TEMPERATURE MEASURING?

Answer 1

• Engine parameters
• Liquid condition
• Air for performance
• Avionics systems

Question 2

What are the 3 types of temperature measuring devices?

Answer 2

1. Expansion
2. Vapour
3. Electrical

Question 3

Describe the Wheatstone bridge

Answer 3

• 4 resistors
• Temp Sensing probe
• Galvanometer

Question 4

Describe the RATIOMETER

Answer 4

• 2 coils
• Sensing bulb
• MAGNETS

Question 5

Describe THERMO-ELECTRIC sensing

Answer 5

• ENGINE temp
• has thermocouple
• EMFproduced

Question 6

Thermocouples

Answer 6

• GASKET (rings) CHT

- BAYONET (in sheath) both

Question 7

EGT Probe

Answer 7

• Downstream of turbine
• Immersion type
• Chromel/Alumel
• Slows gas to allow heat transfer

Question 8

Describe AIR TEMP SENSING

Answer 8

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Question 9

Describe TAT probe

Answer 9

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