JPS5639420A - Diverted flow measurement control device for flow by critical flow velocity nozzle - Google Patents
Diverted flow measurement control device for flow by critical flow velocity nozzleInfo
- Publication number
- JPS5639420A JPS5639420A JP11482379A JP11482379A JPS5639420A JP S5639420 A JPS5639420 A JP S5639420A JP 11482379 A JP11482379 A JP 11482379A JP 11482379 A JP11482379 A JP 11482379A JP S5639420 A JPS5639420 A JP S5639420A
- Authority
- JP
- Japan
- Prior art keywords
- flow
- shunt
- course
- duct
- fluid
- 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.)
- Granted
Links
Landscapes
- Measuring Volume Flow (AREA)
- Details Of Flowmeters (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
PURPOSE: To increase the precision of measurement by arranging a plurality of shunt courses of a prearranged length to a course of fluid having an equal flow velocity distribution, connecting one shunt course to a course having a sonic noise with a variable area and measuring a flow with a changed area so that its flow may be equal to the flow of the other shunt course.
CONSTITUTION: A brace 3 is fixed at a right angle with a flow direction inside the duct 2 designed to allow the passage of a fluid 1 having an almost uniform flow velocity distribution, and also a plurality of shunt tubes 4, 5 of a fixed length are provided in the duct. One of the shunt tubes 5 is connected to the sonic nozzle 7 with a variable area with the assistance of duct 6. In addition, the said shunt tube is connected to the discharge tube 9 by way of pump 8. Inside the shunt tubes 4, 5, for instance, hot-wire anemometers 10, 11 are installed to detect the average value of the velocity of a fluid 1. The area for the sonic nozzle 7 is controlled by the servo device 13 so that the output difference of comparator 12 many become zero. Thus the accurate flow of shunt tube 5 is recorded by a measurement device 14. Under this constitution, it is possible to increase measurement precision with an extremely simple device.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11482379A JPS6010565B2 (en) | 1979-09-07 | 1979-09-07 | Flow rate diversion measurement control device using a critical flow nozzle |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11482379A JPS6010565B2 (en) | 1979-09-07 | 1979-09-07 | Flow rate diversion measurement control device using a critical flow nozzle |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5639420A true JPS5639420A (en) | 1981-04-15 |
JPS6010565B2 JPS6010565B2 (en) | 1985-03-18 |
Family
ID=14647570
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11482379A Expired JPS6010565B2 (en) | 1979-09-07 | 1979-09-07 | Flow rate diversion measurement control device using a critical flow nozzle |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6010565B2 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60236033A (en) * | 1984-05-09 | 1985-11-22 | Toshiba Corp | Measuring instrument of flow rate |
JP2013502596A (en) * | 2009-08-24 | 2013-01-24 | パーティクル・メージャーリング・システムズ・インコーポレーテッド | Particle sensor whose flow rate is monitored |
US10983040B2 (en) | 2013-03-15 | 2021-04-20 | Particles Plus, Inc. | Particle counter with integrated bootloader |
US11169077B2 (en) | 2013-03-15 | 2021-11-09 | Particles Plus, Inc. | Personal air quality monitoring system |
US11579072B2 (en) | 2013-03-15 | 2023-02-14 | Particles Plus, Inc. | Personal air quality monitoring system |
US11835443B2 (en) | 2014-04-30 | 2023-12-05 | Particles Plus, Inc. | Real time monitoring of particle count data |
US11988591B2 (en) | 2020-07-01 | 2024-05-21 | Particles Plus, Inc. | Modular optical particle counter sensor and apparatus |
-
1979
- 1979-09-07 JP JP11482379A patent/JPS6010565B2/en not_active Expired
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60236033A (en) * | 1984-05-09 | 1985-11-22 | Toshiba Corp | Measuring instrument of flow rate |
JPH0352812B2 (en) * | 1984-05-09 | 1991-08-13 | Tokyo Shibaura Electric Co | |
JP2013502596A (en) * | 2009-08-24 | 2013-01-24 | パーティクル・メージャーリング・システムズ・インコーポレーテッド | Particle sensor whose flow rate is monitored |
US8800383B2 (en) | 2009-08-24 | 2014-08-12 | Particle Measuring Systems, Inc. | Flow monitored particle sensor |
US10983040B2 (en) | 2013-03-15 | 2021-04-20 | Particles Plus, Inc. | Particle counter with integrated bootloader |
US11169077B2 (en) | 2013-03-15 | 2021-11-09 | Particles Plus, Inc. | Personal air quality monitoring system |
US11519842B2 (en) | 2013-03-15 | 2022-12-06 | Particles Plus, Inc. | Multiple particle sensors in a particle counter |
US11579072B2 (en) | 2013-03-15 | 2023-02-14 | Particles Plus, Inc. | Personal air quality monitoring system |
US11913869B2 (en) | 2013-03-15 | 2024-02-27 | Particles Plus, Inc. | Personal air quality monitoring system |
US11835443B2 (en) | 2014-04-30 | 2023-12-05 | Particles Plus, Inc. | Real time monitoring of particle count data |
US11846581B2 (en) | 2014-04-30 | 2023-12-19 | Particles Plus, Inc. | Instrument networking for optical particle counters |
US11988591B2 (en) | 2020-07-01 | 2024-05-21 | Particles Plus, Inc. | Modular optical particle counter sensor and apparatus |
Also Published As
Publication number | Publication date |
---|---|
JPS6010565B2 (en) | 1985-03-18 |
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