JP2007051913A5 - - Google Patents

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Publication number
JP2007051913A5
JP2007051913A5 JP2005236737A JP2005236737A JP2007051913A5 JP 2007051913 A5 JP2007051913 A5 JP 2007051913A5 JP 2005236737 A JP2005236737 A JP 2005236737A JP 2005236737 A JP2005236737 A JP 2005236737A JP 2007051913 A5 JP2007051913 A5 JP 2007051913A5
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JP
Japan
Prior art keywords
flow rate
ultrasonic
correcting
kinematic viscosity
flowmeter according
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Pending
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JP2005236737A
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Japanese (ja)
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JP2007051913A (en
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Priority to JP2005236737A priority Critical patent/JP2007051913A/en
Priority claimed from JP2005236737A external-priority patent/JP2007051913A/en
Publication of JP2007051913A publication Critical patent/JP2007051913A/en
Publication of JP2007051913A5 publication Critical patent/JP2007051913A5/ja
Pending legal-status Critical Current

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Claims (5)

測定用流体が流れる管体の上流側及び下流側にそれぞれ配置した超音波送受波器により相互に超音波パルスを発信し、下流側及び上流側の前記超音波送受波器により前記超音波パルスを受信し、上流側から下流側にまた下流側から上流側に伝播する前記超音波パルスの伝播時間の差を基に前記流体の流量を測定する超音波流量計において、前記２つの伝播時間の和を基に前記流体中の超音波パルスの伝達速度である音速を演算する工程と、該音速を基に前記流体の温度を求める工程と、該温度を基に前記流体の動粘度を求める工程と、該動粘度を基に測定した前記流量を補正する工程とを備えたことを特徴とする超音波流量計の補正方法。   Ultrasonic pulses are transmitted mutually by ultrasonic transducers arranged on the upstream side and downstream side of the tubular body through which the measurement fluid flows, and the ultrasonic pulses are transmitted by the ultrasonic transducers on the downstream side and upstream side. In the ultrasonic flowmeter that receives and measures the flow rate of the fluid based on the difference in propagation time of the ultrasonic pulse that propagates from upstream to downstream and from downstream to upstream, the sum of the two propagation times Calculating the speed of sound, which is the transmission speed of ultrasonic pulses in the fluid, based on the following: determining the temperature of the fluid based on the speed of sound; determining the kinematic viscosity of the fluid based on the temperature; And a step of correcting the flow rate measured on the basis of the kinematic viscosity. 前記温度を求める工程及び前記動粘度を求める工程は、記憶した数値を用いて算出することを特徴とする請求項１に記載の超音波流量計の補正方法。   The method for correcting an ultrasonic flowmeter according to claim 1, wherein the step of obtaining the temperature and the step of obtaining the kinematic viscosity are calculated using a stored numerical value. 前記流量を補正する工程は、前記得られた動粘度を基に流速ごとに記憶した補正係数を乗じて流速を補正し、該補正した流速を基に流量を演算することを特徴とする請求項１又は２に記載の超音波流量計の補正方法。 The step of correcting the flow rate corrects the flow rate by multiplying a correction coefficient stored for each flow rate based on the obtained kinematic viscosity, and calculates the flow rate based on the corrected flow rate. The method for correcting an ultrasonic flowmeter according to 1 or 2 . 前記補正係数は予め実験により求めた値としたことを特徴とする請求項３に記載の超音波流量計の補正方法。   The method for correcting an ultrasonic flowmeter according to claim 3, wherein the correction coefficient is a value obtained by an experiment in advance. 前記各工程は１個のＣＰＵの演算により実行することを特徴とする請求項１〜４の何れか１つの請求項に記載の超音波流量計の補正方法。 5. The method of correcting an ultrasonic flowmeter according to claim 1 , wherein each of the steps is executed by calculation of one CPU.
JP2005236737A 2005-08-17 2005-08-17 Correction method for ultrasonic flowmeter Pending JP2007051913A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2005236737A JP2007051913A (en) 2005-08-17 2005-08-17 Correction method for ultrasonic flowmeter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005236737A JP2007051913A (en) 2005-08-17 2005-08-17 Correction method for ultrasonic flowmeter

Publications (2)

Publication Number Publication Date
JP2007051913A JP2007051913A (en) 2007-03-01
JP2007051913A5 true JP2007051913A5 (en) 2010-03-25

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ID=37916458

Family Applications (1)

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JP2005236737A Pending JP2007051913A (en) 2005-08-17 2005-08-17 Correction method for ultrasonic flowmeter

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Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5282955B2 (en) * 2008-12-10 2013-09-04 本多電子株式会社 Ultrasonic flow meter correction method and ultrasonic flow meter
JP2010190775A (en) * 2009-02-19 2010-09-02 Tokyo Electric Power Co Inc:The Ultrasonic flow rate measurement method and flow rate measurement apparatus
JP5608884B2 (en) * 2009-05-09 2014-10-22 本多電子株式会社 Ultrasonic flow meter and fluid supply system
JP5521137B2 (en) * 2010-10-05 2014-06-11 本多電子株式会社 Ultrasonic flow meter, flow control system, flow measurement method, flow control method
CN103808381B (en) * 2014-03-04 2016-06-15 华南理工大学 A kind of temperature influence eliminating method of transit-time ultrasonic flow meter
JP2015206593A (en) * 2014-04-17 2015-11-19 株式会社ディスコ Ultrasonic flow meter
CN114543949A (en) * 2022-02-24 2022-05-27 安徽汉威电子有限公司 Self-adaptive metering method of ultrasonic water meter

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53124486A (en) * 1977-04-07 1978-10-30 Nippon Steel Corp Temperature measuring apparatus by ultrasonic waves
JPS56140214A (en) * 1980-04-01 1981-11-02 Kawasaki Steel Corp Flow measurement using supersonic flow meter
JPS63131027A (en) * 1986-11-19 1988-06-03 Tokyo Keiki Co Ltd Ultrasonic gas flowmeter
JPH05264518A (en) * 1992-03-19 1993-10-12 Olympus Optical Co Ltd Ultrasonic measuring device
TW283763B (en) * 1992-10-06 1996-08-21 Caldon Inc
JP3103264B2 (en) * 1994-03-24 2000-10-30 株式会社オーバル Ultrasonic flow meter
JP3649028B2 (en) * 1999-03-16 2005-05-18 富士電機システムズ株式会社 Ultrasonic flow meter and measuring method thereof
JP3624743B2 (en) * 1999-05-24 2005-03-02 松下電器産業株式会社 Ultrasonic flow meter
JP2001249039A (en) * 2000-03-07 2001-09-14 Osaka Gas Co Ltd Ultrasonic gas flow-velocity measuring method
JP2005201836A (en) * 2004-01-19 2005-07-28 Tokyo Keiso Co Ltd Propagation time difference type ultrasonic flowmeter

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