Title:
Ultrasonic flow meter and flow rate measurement method
Document Type and Number:
Japanese Patent JP6309405
Kind Code:
B2
Abstract:
An ultrasonic flow meter that includes a first ultrasonic transducer for making incident a first ultrasonic signal against a pipe through which a fluid flows; a second ultrasonic transducer, disposed in a position capable of receiving the first ultrasonic signal, for making incident a second ultrasonic signal against pipe; a flow velocity computation component for computing the flow velocity of the fluid within pipe based on a first time period during which the first ultrasonic signal arrives at the second ultrasonic transducer and on a second time period during which the second ultrasonic signal arrives at the first ultrasonic transducer; a logarithmic correction function saving component for saving a logarithmic correction function; and a logarithmic correction component for correction the flow velocity by using the correction coefficient that corresponds to the Reynolds number of the fluid.
Inventors:
Hiroshi Sasaki
Application Number:
JP2014181690A
Publication Date:
April 11, 2018
Filing Date:
September 05, 2014
Export Citation:
Assignee:
Azbil Co., Ltd.
International Classes:
G01F1/66
Domestic Patent References:
| JP11044561A | ||||
| JP8193861A | ||||
| JP8261809A |
Foreign References:
| WO2013099233A1 | ||||
| US20090055119 |
Attorney, Agent or Firm:
Yoshiyuki Inaba
Toshifumi Onuki
Akihiko Eguchi
Kazuhiko Naito
Toshifumi Onuki
Akihiko Eguchi
Kazuhiko Naito