JP2005291766A5 - - Google Patents
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- JP2005291766A5 JP2005291766A5 JP2004103632A JP2004103632A JP2005291766A5 JP 2005291766 A5 JP2005291766 A5 JP 2005291766A5 JP 2004103632 A JP2004103632 A JP 2004103632A JP 2004103632 A JP2004103632 A JP 2004103632A JP 2005291766 A5 JP2005291766 A5 JP 2005291766A5
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- Prior art keywords
- temperature
- pipe
- measuring
- temperature sensor
- flow rate
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Claims (2)
配管の表面において所定の距離をおいた上流側と下流側の２カ所の配管表面の温度を測定する工程と，
予め設定した配管内の流体の温度と配管表面温度との関係を求めておき，前記配管表面の温度から配管内を流れる流体の温度を求める工程と，
上流側の測定点における測定結果から求めた，ある時点の流体の温度と同一の温度を，下流側の測定点における測定結果から求められた時の，前記ある時点との時間差を測定する工程と，
当該時間差と前記所定距離から流速を求める工程と，
前記流速と配管断面積から，流量を求める工程とを有することを特徴とする，流量計測方法。 A method for determining the flow rate of fluid in a pipe,
Measuring the temperature at two upstream and downstream piping surfaces at a predetermined distance on the surface of the piping;
Obtaining a relationship between a preset temperature of the fluid in the pipe and the pipe surface temperature, and obtaining a temperature of the fluid flowing in the pipe from the temperature of the pipe surface;
A step of measuring a time difference from a certain point in time when the same temperature as that of the fluid at a certain point in time obtained from the measurement result at the upstream point is obtained from the measurement result at the downstream point. ,
Obtaining a flow velocity from the time difference and the predetermined distance;
A flow rate measuring method comprising the step of obtaining a flow rate from the flow velocity and the cross-sectional area of the pipe.
前記配管の表面の温度を測定する第１の温度センサと，
前記第１の温度センサから下流側に所定距離をおいた配管の表面の温度を測定する第２の温度センサと，
第１の温度センサが測定した基準温度を，第２の温度センサで測定したときの時間差を測定する計測装置とを有することを特徴とする，流量計測装置。 A device that measures the flow rate of fluid in a pipe using a temperature sensor,
A first temperature sensor for measuring the temperature of the surface of the pipe;
A second temperature sensor for measuring the temperature of the surface of the pipe at a predetermined distance downstream from the first temperature sensor;
A flow rate measuring device comprising: a measuring device that measures a time difference when the reference temperature measured by the first temperature sensor is measured by the second temperature sensor.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004103632A JP4796283B2 (en) | 2004-03-31 | 2004-03-31 | Flow rate measuring method and flow rate measuring device using temperature sensor |
| CN 200510062976 CN100501343C (en) | 2004-03-31 | 2005-03-31 | Energy metering method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004103632A JP4796283B2 (en) | 2004-03-31 | 2004-03-31 | Flow rate measuring method and flow rate measuring device using temperature sensor |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2005291766A JP2005291766A (en) | 2005-10-20 |
| JP2005291766A5 true JP2005291766A5 (en) | 2007-05-17 |
| JP4796283B2 JP4796283B2 (en) | 2011-10-19 |
Family
ID=35324876
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2004103632A Expired - Lifetime JP4796283B2 (en) | 2004-03-31 | 2004-03-31 | Flow rate measuring method and flow rate measuring device using temperature sensor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4796283B2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006242851A (en) * | 2005-03-04 | 2006-09-14 | Sanki Eng Co Ltd | Method for measuring flow rate of cold (hot) water flowing through heat-insulating pipe in heat source facilities and device thereof |
| KR20120102816A (en) * | 2008-05-01 | 2012-09-18 | 마이크로 모우션, 인코포레이티드 | Method for generating a diagnostic from a deviation of a flow meter parameter |
| JP6110073B2 (en) * | 2012-03-29 | 2017-04-05 | 高砂熱学工業株式会社 | Flow rate measuring device and flow rate measuring method |
| EP3421947B1 (en) * | 2017-06-30 | 2019-08-07 | Sensirion AG | Operation method for flow sensor device |
| JP2021081268A (en) * | 2019-11-18 | 2021-05-27 | アズビル株式会社 | Electromagnetic flowmeter |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS645118A (en) * | 1987-06-27 | 1989-01-10 | Ricoh Kk | Successive comparison type a/d converter |
| JPH01300067A (en) * | 1988-05-25 | 1989-12-04 | Toshiba Corp | Method for measuring flow quantity in pumped storage power station |
| JP2003240616A (en) * | 2002-02-20 | 2003-08-27 | Toko Electric Corp | Flow measuring system |
| JP3571701B2 (en) * | 2002-02-27 | 2004-09-29 | 東京瓦斯株式会社 | Capacitive flow velocity detector using temperature fluctuation and capacitance flow detector using temperature fluctuation |
| JP3700937B2 (en) * | 2002-03-18 | 2005-09-28 | 東光電気株式会社 | Thermometer and thermometer installation method |
-
2004
- 2004-03-31 JP JP2004103632A patent/JP4796283B2/en not_active Expired - Lifetime
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