JPH0339248B2 - - Google Patents
Info
- Publication number
- JPH0339248B2 JPH0339248B2 JP57150477A JP15047782A JPH0339248B2 JP H0339248 B2 JPH0339248 B2 JP H0339248B2 JP 57150477 A JP57150477 A JP 57150477A JP 15047782 A JP15047782 A JP 15047782A JP H0339248 B2 JPH0339248 B2 JP H0339248B2
- Authority
- JP
- Japan
- Prior art keywords
- ultrasonic
- oscillation
- operating point
- frequency divider
- division ratio
- 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
- 230000010355 oscillation Effects 0.000 claims description 32
- 238000001514 detection method Methods 0.000 claims description 23
- 239000012530 fluid Substances 0.000 claims description 17
- 230000001360 synchronised effect Effects 0.000 claims description 5
- 238000005259 measurement Methods 0.000 description 22
- 238000006243 chemical reaction Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 238000009434 installation Methods 0.000 description 5
- 230000005856 abnormality Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000010354 integration Effects 0.000 description 2
- 230000000644 propagated effect Effects 0.000 description 2
- 230000001902 propagating effect Effects 0.000 description 2
- 240000001592 Amaranthus caudatus Species 0.000 description 1
- 235000009328 Amaranthus caudatus Nutrition 0.000 description 1
- 244000062793 Sorghum vulgare Species 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 235000019713 millet Nutrition 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
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
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57150477A JPS5946512A (ja) | 1982-08-30 | 1982-08-30 | 超音波流量計 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57150477A JPS5946512A (ja) | 1982-08-30 | 1982-08-30 | 超音波流量計 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5946512A JPS5946512A (ja) | 1984-03-15 |
| JPH0339248B2 true JPH0339248B2 (enrdf_load_stackoverflow) | 1991-06-13 |
Family
ID=15497744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57150477A Granted JPS5946512A (ja) | 1982-08-30 | 1982-08-30 | 超音波流量計 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5946512A (enrdf_load_stackoverflow) |
-
1982
- 1982-08-30 JP JP57150477A patent/JPS5946512A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5946512A (ja) | 1984-03-15 |