NL7903821A - MEASURING DEVICE FOR MEASURING A TRANSMISSION TIME OF AN ULTRASONIC SIGNAL. - Google Patents
MEASURING DEVICE FOR MEASURING A TRANSMISSION TIME OF AN ULTRASONIC SIGNAL.Info
- Publication number
- NL7903821A NL7903821A NL7903821A NL7903821A NL7903821A NL 7903821 A NL7903821 A NL 7903821A NL 7903821 A NL7903821 A NL 7903821A NL 7903821 A NL7903821 A NL 7903821A NL 7903821 A NL7903821 A NL 7903821A
- Authority
- NL
- Netherlands
- Prior art keywords
- measuring
- transmission time
- ultrasonic signal
- measuring device
- ultrasonic
- Prior art date
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 Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Measurement Of Unknown Time Intervals (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 (1)
Publication Number | Publication Date |
---|---|
NL7903821A true NL7903821A (en) | 1979-11-20 |
Family
ID=13066575
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NL7903821A NL7903821A (en) | 1978-05-16 | 1979-05-15 | MEASURING DEVICE FOR MEASURING A TRANSMISSION TIME OF AN ULTRASONIC SIGNAL. |
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 |
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 |
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 |
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 NL NL7903821A patent/NL7903821A/en not_active Application Discontinuation
- 1979-05-15 GB GB7916836A patent/GB2021768B/en not_active Expired
- 1979-05-15 DK DK200579A patent/DK200579A/en not_active Application Discontinuation
- 1979-05-16 DE DE19792920177 patent/DE2920177A1/en not_active Withdrawn
- 1979-05-16 FR FR7912503A patent/FR2426248A1/en active Pending
Also Published As
Publication number | Publication date |
---|---|
JPS54149670A (en) | 1979-11-24 |
DK200579A (en) | 1979-11-17 |
GB2021768B (en) | 1982-08-18 |
DE2920177A1 (en) | 1979-11-22 |
GB2021768A (en) | 1979-12-05 |
FR2426248A1 (en) | 1979-12-14 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
BV | The patent application has lapsed |