Question

Which of the following can be used to measure accurately the fluctuating temperature of hot flowing water in a water pipe?

1. Mercury in glass thermometer
2. Alcohol in glass thermometer
3. Thermocouple thermometer
A. 1 only
B. 3 only
C. 1 and 2 only
D. 1 and 3 only

Answer 1

I do not see how you would get the glass therrmometer into the pipe. Use the thermocouple.