Which of the following conditions is likely...

Question 1 / 270705eccefa2bacbc34ba4d47b5d

Question 1 of 270705eccefa2bacbc34ba4d47b5d

Which of the following conditions is likely to develop if the thermocouple element of a pyrometer becomes coated with excessive amounts of combustion by-products?

Back

Question 1 of 27070

Which of the following conditions is likely to develop if the thermocouple element of a pyrometer becomes coated with excessive amounts of combustion by-products?

🔍 Key Concepts

• Pyrometer operation – how a thermocouple measures exhaust/cylinder temperature • Effect of insulation or fouling on a temperature sensor’s response time and accuracy • Difference between response speed (lag) and indicated value (higher or lower reading)

💭 Think About

• What happens to heat transfer to the thermocouple when it is covered with soot or combustion deposits – does it get heat faster, slower, or about the same? • If the thermocouple sees the hot gas later or more slowly, would the gauge tend to move quickly or slowly when temperature changes? • Which answer choices talk about temperature or pressure readings, and which talk about how fast the instrument reacts?

✅ Before You Answer

• Distinguish between pressure instruments (measuring firing or exhaust pressure) and temperature instruments (pyrometer/thermocouple). • Decide whether fouling is more likely to change the speed of response or the actual operating pressure in the cylinder. • Confirm that a pyrometer is not a pressure-measuring device, so eliminate answers that only relate to pressure changes.

Question 1 of 27070

Which of the following conditions is likely to develop if the thermocouple element of a pyrometer becomes coated with excessive amounts of combustion by-products?

Indicated exhaust pressure readings will increase.

Pyrometer responses will be retarded.

Indicated cylinder temperature readings will increase.

Indicated firing pressure readings will increase.

Loading interactive features...

Question 1 / 270705eccefa2bacbc34ba4d47b5d

Question 1 of 270705eccefa2bacbc34ba4d47b5d

Which of the following conditions is likely to develop if the thermocouple element of a pyrometer becomes coated with excessive amounts of combustion by-products?

Back

Question 1 of 27070

Which of the following conditions is likely to develop if the thermocouple element of a pyrometer becomes coated with excessive amounts of combustion by-products?