DE3473345D1 - Method and apparatus for the ultrasonic measuring of a fluid - Google Patents
Method and apparatus for the ultrasonic measuring of a fluidInfo
- Publication number
- DE3473345D1 DE3473345D1 DE8484401072T DE3473345T DE3473345D1 DE 3473345 D1 DE3473345 D1 DE 3473345D1 DE 8484401072 T DE8484401072 T DE 8484401072T DE 3473345 T DE3473345 T DE 3473345T DE 3473345 D1 DE3473345 D1 DE 3473345D1
- Authority
- DE
- Germany
- Prior art keywords
- microcomputer
- latch
- flow
- gains
- propagation time
- 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
Landscapes
- Measuring Volume Flow (AREA)
Abstract
For measurement of propagation time a microcomputer routes transmission circuit output to a transducer. The microcomputer (45) initiates two cycles of operation by triggering switching circuits which control counter start and stop flip flops. A sequencer resets circuits including a latch which inhibits effects of signals for a given period. The latch also reduces gains of amplifiers for a period and then allows their gains to be increased for reception of the echo signal. When the microcomputer has acquired the counter contents the propagation time is measured in the reverse direction. A third sequence of operations determines the difference in propagation times to determine direction of flow. By applying compensation for parasitic delays to the times and by integration the speed of flow is calculated.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP19840401072 EP0162987B1 (en) | 1983-04-12 | 1984-05-24 | Method and apparatus for the ultrasonic measuring of a fluid |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3473345D1 true DE3473345D1 (en) | 1988-09-15 |
Family
ID=8192886
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE8484401072T Expired DE3473345D1 (en) | 1984-05-24 | 1984-05-24 | Method and apparatus for the ultrasonic measuring of a fluid |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE3473345D1 (en) |
-
1984
- 1984-05-24 DE DE8484401072T patent/DE3473345D1/en not_active Expired
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8328 | Change in the person/name/address of the agent |
Free format text: DERZEIT KEIN VERTRETER BESTELLT |
|
8339 | Ceased/non-payment of the annual fee | ||
8370 | Indication of lapse of patent is to be deleted | ||
8339 | Ceased/non-payment of the annual fee |