Doppler type ultrasonic flow meter

Details Doppler type ultrasonic flow meter Doppler type ultrasonic flow meter

2005-02-24

2010-10-05

Thompson, Jewel (Department: 2855)

Measuring and testing

Volume or rate of flow

By measuring vibrations or acoustic energy

Reexamination Certificate

active

07806003

ABSTRACT:
In a doppler type ultrasonic flow meter (1) for measuring the volumetric flow of a measurement object fluid (10) using doppler shift of ultrasound, a pair of ultrasonic transducers (3a, 3b) perform transmission of ultrasound and reception of an ultrasound echo resulting from the ultrasound being reflected. The ultrasonic transducers (3a, 3b) are disposed on an extension line of a measurement line ML for performing measurement of doppler shift, symmetrical about the center axis (5) of a pipe (2) with a measurement object fluid (10) flowing through its inside, and on the outside of the pipe (2). A flow profile for the side opposite, with respect to the center axis (5) of the pipe (2), the side on which the respective ultrasonic transducer (3a, 3b) is disposed is used for the calculation of the volumetric flow of the measurement object fluid (10).

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