1. Transmission ultrasonic flow meter
The meter makes the measurement by measuring the different times which takes for the pulse in the flowing fluid to reach the corresponding sensor. The time difference provides a measurement to calculate the velocity of the fluid moving in the pipe.
Transmission ultrasonic flow meter are available in two variants, one called embedded, the other clamp-on or non-invasive.
2. Doppler frequency shift flow meter
Doppler frequency shift flow meter is also known as Doppler flow meter.It is commonly used to measure blood flow.
3. Open channel ultrasonic flow meter
When measuring water levels in open channels, open channel ultrasonic flow meters are more often used.The ultrasonic element determines the height of the water and then compares it to the overall geometry of the channel itself.