JPS5539035A - Ultrasonic flow meter - Google Patents
Ultrasonic flow meterInfo
- Publication number
- JPS5539035A JPS5539035A JP11229578A JP11229578A JPS5539035A JP S5539035 A JPS5539035 A JP S5539035A JP 11229578 A JP11229578 A JP 11229578A JP 11229578 A JP11229578 A JP 11229578A JP S5539035 A JPS5539035 A JP S5539035A
- Authority
- JP
- Japan
- Prior art keywords
- transducers
- backward
- measuring
- influences
- differences
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Measuring Volume Flow (AREA)
Abstract
PURPOSE: To reliably eliminate the influences from a drift so that the flow rate can be measured in high accuracy by simultaneously measuring the propagation speeds in forward and backward directions with respect to the flow with the use of a plurality of transducers.
CONSTITUTION: A measuring circuit 25 measures the differences in the ultrasonic propagation time in the forward and backward directions between transducers TD 21 and 22. While the resultant output voltage VA is being fed to a terminal 29, a measuring circuit 26 measures the differences in the forward and backward ultrasonic proparation time between transducers TD 23 and 24 and feeds its output voltage VB to a terminal 33. The average value between the voltages VA and VB is calculated by an average circuit 34 and is fed out as the flow rate output. As a result, even if the drift component is timely varied, its influences can be eliminated without fail. Incidentally the forward and backward measuring periods are simultanously preset for the respective grouped transducers TD.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11229578A JPS5539035A (en) | 1978-09-14 | 1978-09-14 | Ultrasonic flow meter |
DE19792936909 DE2936909A1 (en) | 1978-09-14 | 1979-09-12 | Ultrasonic flowmeter for pipeline - consists of acoustic converter pairs, triggered by transit time circuit to emit short duration pulses for flow measurement |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11229578A JPS5539035A (en) | 1978-09-14 | 1978-09-14 | Ultrasonic flow meter |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5539035A true JPS5539035A (en) | 1980-03-18 |
Family
ID=14583104
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11229578A Pending JPS5539035A (en) | 1978-09-14 | 1978-09-14 | Ultrasonic flow meter |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5539035A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010005667A3 (en) * | 2008-07-09 | 2010-03-04 | Daniel Measurement And Control, Inc. | Method and system of coordination of measurement subsystems of a flow meter |
US7752919B2 (en) | 2008-07-09 | 2010-07-13 | Daniel Measurement And Control, Inc. | System and method of an acoustic flow meter with dual flow measurements |
-
1978
- 1978-09-14 JP JP11229578A patent/JPS5539035A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010005667A3 (en) * | 2008-07-09 | 2010-03-04 | Daniel Measurement And Control, Inc. | Method and system of coordination of measurement subsystems of a flow meter |
US7735380B2 (en) | 2008-07-09 | 2010-06-15 | Daniel Measurement & Control, Inc. | Method and system of coordination of measurement subsystems of a flow meter |
US7752919B2 (en) | 2008-07-09 | 2010-07-13 | Daniel Measurement And Control, Inc. | System and method of an acoustic flow meter with dual flow measurements |
CN105424109A (en) * | 2008-07-09 | 2016-03-23 | 丹尼尔度量和控制公司 | Method And System Of Coordination Of Measurement Subsystems Of A Flow Meter |
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