What Is a Doppler Flow Meter?

Ultrasonic waves will be scattered if they encounter tiny solid particles or bubbles in the propagation path, because the time difference method does not work well when measuring fluids containing such things, it can only be used to measure relatively clean fluids. The Doppler method works by using the characteristic that ultrasonic waves are scattered. Therefore, the Doppler method is suitable for measuring fluids containing solid particles or bubbles. However, because scattering particles or bubbles exist randomly, the sound transmission properties of fluids are also different. . If the fluid with poor sound transmission performance is measured, the scattering is strong in the low velocity region near the wall of the tube; while the fluid with good sound transmission performance is scattered in the high velocity region, which makes the Doppler method more accurate. low. Although the transmitting transducer is separated from the receiving transducer, so that only the scattering in the middle region of the flow velocity section can be received, the measurement accuracy is still lower compared with the time difference method. ^[1]

Doppler flowmeter

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Ultrasonic waves will be scattered if they encounter tiny solid particles or bubbles in the propagation path, because the time difference method does not work well when measuring fluids containing such things, it can only be used to measure relatively clean fluids. The Doppler method works by using the characteristic that ultrasonic waves are scattered. Therefore, the Doppler method is suitable for measuring fluids containing solid particles or bubbles. However, because scattering particles or bubbles exist randomly, the sound transmission properties of fluids are also different. . If the fluid with poor sound transmission performance is measured, the scattering is strong in the low velocity region near the wall of the tube; while the fluid with good sound transmission performance is scattered in the high velocity region, which makes the Doppler method more accurate. low. Although the transmitting transducer is separated from the receiving transducer, so that only the scattering in the middle region of the flow velocity section can be received, the measurement accuracy is still lower compared with the time difference method. ^[1]

Doppler ultrasonic flowmeters are widely used in industrial, water conservancy, irrigation and other industries, and are suitable for flow measurement of full, non-full and open channels.

Features of HydroMace Series Doppler Ultrasonic Flowmeter:

The FloPro series Doppler ultrasonic flowmeter produced by Mace Australia has a dual-line 16-bit LCD display, measurement accuracy of 1%, protection level IP66, 2Mb memory; battery power or external power supply; output: 4 ~ 20mA, RS232 / 485, SDI-12, wireless communication.

Product Features of FloPro Series Doppler Ultrasonic Flowmeter:

Two-line 16-bit LCD display

Measurement accuracy: 1%

Protection grade IP66, 2Mb memory

Battery-powered or external power supply

Output: 4 ~ 20mA, RS232 / 485

Output: SDI-12, wireless communication