Which flow meter technology is based on the principle of measuring the velocity of a fluid at one or more points in a pipe?
A. Magnetic flow meter
B. Ultrasonic flow meter
C. Differential pressure flow meter
D. Thermal flow meter
Answer:B
Which flow meter technology is based on the principle of measuring the velocity of a fluid at one or more points in a pipe?
A. Magnetic flow meter B. Ultrasonic flow meter C. Differential pressure flow meter D. Thermal flow meter
Explanation: Ultrasonic flow meters use sound waves to measure the velocity of a fluid at one or more points in a pipe. By measuring the time it takes for the sound waves to travel upstream and downstream, the flow rate can be calculated.