JPS56164919A - Ultrasonic flowmeter - Google Patents
Ultrasonic flowmeterInfo
- Publication number
- JPS56164919A JPS56164919A JP6899880A JP6899880A JPS56164919A JP S56164919 A JPS56164919 A JP S56164919A JP 6899880 A JP6899880 A JP 6899880A JP 6899880 A JP6899880 A JP 6899880A JP S56164919 A JPS56164919 A JP S56164919A
- Authority
- JP
- Japan
- Prior art keywords
- pulses
- ultrasonic
- receiver
- transmitter
- ultrasonic waves
- 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
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
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
Abstract
PURPOSE:To make measurement errors difficult to occur despite the inclusion of noise by modulating ultrasonic waves by the pulse train which plural pieces of pulses are made to one set. CONSTITUTION:Ultrasonic waves generated by an ultrasonic oscillator 5 are modulated by a modulator 6. This modulation is accomplished by the pulses consisting of plural pieces as one set. The ultrasonic waves modulated by one set of these pulses are transmitted by an ultrasonic transmitter-receiver 2, and arrive at an ultrasonic transmitter-receiver 3. On the transmitter-receiver 3, one set of these ultrasonic pulses are received as normal ones by the prescribed time difference by a discriminating amplifier. Hence, in spite of the inclusion of noise, it is not regarded as normal pulses in the transmission-receiver 3, and is rejected and therefore the error owing to this does not occur.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6899880A JPS56164919A (en) | 1980-05-26 | 1980-05-26 | Ultrasonic flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6899880A JPS56164919A (en) | 1980-05-26 | 1980-05-26 | Ultrasonic flowmeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS56164919A true JPS56164919A (en) | 1981-12-18 |
Family
ID=13389831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6899880A Pending JPS56164919A (en) | 1980-05-26 | 1980-05-26 | Ultrasonic flowmeter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56164919A (en) |
-
1980
- 1980-05-26 JP JP6899880A patent/JPS56164919A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313113 |
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| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| R250 | Receipt of annual fees |
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| FPAY | Renewal fee payment (prs date is renewal date of database) |
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| FPAY | Renewal fee payment (prs date is renewal date of database) |
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| FPAY | Renewal fee payment (prs date is renewal date of database) |
Year of fee payment: 7 Free format text: PAYMENT UNTIL: 20100905 |
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| LAPS | Cancellation because of no payment of annual fees |