GB2021768B - Acoustic measuring instruments eg flowmeters or level gauges - Google Patents
Acoustic measuring instruments eg flowmeters or level gaugesInfo
- Publication number
- GB2021768B GB2021768B GB7916836A GB7916836A GB2021768B GB 2021768 B GB2021768 B GB 2021768B GB 7916836 A GB7916836 A GB 7916836A GB 7916836 A GB7916836 A GB 7916836A GB 2021768 B GB2021768 B GB 2021768B
- Authority
- GB
- United Kingdom
- Prior art keywords
- flowmeters
- measuring instruments
- level gauges
- acoustic measuring
- acoustic
- 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.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/66—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters
- G01F1/667—Arrangements of transducers for ultrasonic flowmeters; Circuits for operating ultrasonic flowmeters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
- G01F23/296—Acoustic waves
- G01F23/2962—Measuring transit time of reflected waves
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Thermal Sciences (AREA)
- Measuring Volume Flow (AREA)
- Measurement Of Unknown Time Intervals (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5782178A JPS54149670A (en) | 1978-05-16 | 1978-05-16 | Circuit device for detecting ultrasonic wave propagating time |
Publications (2)
Publication Number | Publication Date |
---|---|
GB2021768A GB2021768A (en) | 1979-12-05 |
GB2021768B true GB2021768B (en) | 1982-08-18 |
Family
ID=13066575
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB7916836A Expired GB2021768B (en) | 1978-05-16 | 1979-05-15 | Acoustic measuring instruments eg flowmeters or level gauges |
Country Status (6)
Country | Link |
---|---|
JP (1) | JPS54149670A (en) |
DE (1) | DE2920177A1 (en) |
DK (1) | DK200579A (en) |
FR (1) | FR2426248A1 (en) |
GB (1) | GB2021768B (en) |
NL (1) | NL7903821A (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5752815A (en) * | 1980-09-16 | 1982-03-29 | Yokogawa Hokushin Electric Corp | Processing circuit for ultrasonic wave signal |
JPS5827086A (en) * | 1981-08-11 | 1983-02-17 | Fuji Electric Co Ltd | Ultrasonic wave propagation time detector |
DE3316630C2 (en) * | 1983-05-06 | 1985-07-25 | Erwin Sick Gmbh Optik-Elektronik, 7808 Waldkirch | Device for determining the transit time of ultrasonic pulses in a fluid |
JPH0749976B2 (en) * | 1986-02-26 | 1995-05-31 | 富士電機株式会社 | Ultrasonic measuring device |
GB8918068D0 (en) * | 1989-08-08 | 1989-09-20 | Front Engineering Ltd | An apparatus for determining the time taken for sound to cross a body of fluid in an enclosure |
JP4538163B2 (en) * | 2001-03-30 | 2010-09-08 | サーパス工業株式会社 | Flow rate measuring method, flow rate measuring device, flow rate measuring method, and flow rate measuring device |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3894431A (en) * | 1972-04-04 | 1975-07-15 | Atomic Energy Authority Uk | Apparatus for indicating fluid flow velocity |
US3818757A (en) * | 1972-05-05 | 1974-06-25 | Saratoga Sys Inc | Dual path ultrasonic fluid flow metering system and method |
JPS49130261A (en) * | 1973-04-13 | 1974-12-13 | ||
JPS5310454A (en) * | 1976-07-16 | 1978-01-30 | Nippon Kokan Kk | Apparatus for detecting change of fluid character by singgaround method |
DE2641772A1 (en) * | 1976-09-14 | 1978-03-16 | Fuji Electric Co Ltd | Throughflow or current measuring instrument - has time-difference measuring instrument detecting oscillator pulses and further pulses |
DE2641771A1 (en) * | 1976-09-14 | 1978-03-16 | Fuji Electric Co Ltd | Time difference measuring device - compares measured time difference and reference value for ultrasonic velocimeter |
JPS5829854B2 (en) * | 1977-07-26 | 1983-06-25 | 富士電機株式会社 | Ultrasonic measuring device |
-
1978
- 1978-05-16 JP JP5782178A patent/JPS54149670A/en active Pending
-
1979
- 1979-05-15 DK DK200579A patent/DK200579A/en not_active Application Discontinuation
- 1979-05-15 GB GB7916836A patent/GB2021768B/en not_active Expired
- 1979-05-15 NL NL7903821A patent/NL7903821A/en not_active Application Discontinuation
- 1979-05-16 FR FR7912503A patent/FR2426248A1/en active Pending
- 1979-05-16 DE DE19792920177 patent/DE2920177A1/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
DK200579A (en) | 1979-11-17 |
NL7903821A (en) | 1979-11-20 |
GB2021768A (en) | 1979-12-05 |
DE2920177A1 (en) | 1979-11-22 |
JPS54149670A (en) | 1979-11-24 |
FR2426248A1 (en) | 1979-12-14 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |