Which of the following flow measurement technologies is based on the principle of heat transfer?
A. Magnetic flowmeter
B. Coriolis flowmeter
C. Thermal flowmeter
D. Ultrasonic flowmeter
Answer:C
Which of the following flow measurement technologies is based on the principle of heat transfer?
A. Magnetic flowmeter B. Coriolis flowmeter C. Thermal flowmeter D. Ultrasonic flowmeter
Explanation: Thermal flowmeters measure the rate of heat transfer from a heated element to the fluid flowing past it. As the fluid flows, it carries heat away from the element, reducing its temperature. By measuring the temperature difference between the heated element and the fluid, the flow rate can be calculated.