| 摘要 |
PROBLEM TO BE SOLVED: To provide an ultrasonic meter device capable of attaining a precise and wide measuring range by uniformizing a flow velocity distribution of a measuring objective fluid, in an area along an ultrasonic propagation path crossing diagonally a measuring flow passage. SOLUTION: The ultrasonic meter device measures a propagation state of an ultrasonic wave in the ultrasonic propagation path, by a pair of ultrasonic transceivers arranged in both ends of the ultrasonic propagation path crossed diagonally between an upstream and a downstream of the measuring flow passage, and capable of transceiving mutually the ultrasonic wave along the ultrasonic propagation path, and derives a correlation value of the flow velocity of a measuring object fluid circulating the measuring flow passage. A straightening part 20 is provided to arrange a plurality of passing passages 21 with the measuring object fluid g flowing therethrough along the ultrasonic propagation path 5, and a width D5 of the ultrasonic propagation path 5 in the measuring flow passage 2 is formed larger than a width D20 of the straightening part 20. COPYRIGHT: (C)2007,JPO&INPIT
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