JPS54130159A - Flowmeter - Google Patents
FlowmeterInfo
- Publication number
- JPS54130159A JPS54130159A JP3751278A JP3751278A JPS54130159A JP S54130159 A JPS54130159 A JP S54130159A JP 3751278 A JP3751278 A JP 3751278A JP 3751278 A JP3751278 A JP 3751278A JP S54130159 A JPS54130159 A JP S54130159A
- Authority
- JP
- Japan
- Prior art keywords
- fluid
- phase
- velocity
- correction
- temperature
- 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 make possible highly accurate measurement of the flow rate of fluid and enable the correction of the distributions of velocity of flow and the correction of fluid temperature to be readily performed by detecting the noise signals at two positions within a pipeline and obtaining their correlations.
CONSTITUTION: In respective ultrasonic signal receivers 31, 32, the high frequency signals X, Y containing noise signals of the same phase and same amplitude produced owing to the vibrations transmitting in a pipeline 1 and the power source fluctuations of an oscillator 4 are obtained. In a phase demodulator 50, the phase difference of the signals X, Y is detected and in a self-correlator 6, the self-correlation function of the phase difference signal is obtained. Further in a phase demodulator 55, the phase difference of the signal Y from the receiver 32 and the transmission signal from the oscillator 4 is demodulated, by which the temperature of fluid is detected. The outputs of the correlator 6 and demodulator 55 are inputted to a microprocessor μP, where the velocity of fluid is measured. The temperature is indicated in a display device ID 1 and the velocity after correction in a display device ID 2.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3751278A JPS54130159A (en) | 1978-03-31 | 1978-03-31 | Flowmeter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3751278A JPS54130159A (en) | 1978-03-31 | 1978-03-31 | Flowmeter |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54130159A true JPS54130159A (en) | 1979-10-09 |
Family
ID=12499582
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3751278A Pending JPS54130159A (en) | 1978-03-31 | 1978-03-31 | Flowmeter |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54130159A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT503444B1 (en) * | 2006-03-28 | 2007-10-15 | Univ Graz Tech | ADAPTIVE PROCESS FOR IMPROVING FUNCTIONAL SAFETY IN CROSS CORRELATION FLOW METERS |
CN112997051A (en) * | 2018-12-26 | 2021-06-18 | 德州仪器公司 | Dynamic temperature calibration of ultrasound transducers |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5016567A (en) * | 1973-05-07 | 1975-02-21 |
-
1978
- 1978-03-31 JP JP3751278A patent/JPS54130159A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5016567A (en) * | 1973-05-07 | 1975-02-21 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT503444B1 (en) * | 2006-03-28 | 2007-10-15 | Univ Graz Tech | ADAPTIVE PROCESS FOR IMPROVING FUNCTIONAL SAFETY IN CROSS CORRELATION FLOW METERS |
CN112997051A (en) * | 2018-12-26 | 2021-06-18 | 德州仪器公司 | Dynamic temperature calibration of ultrasound transducers |
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