KR20100035138A - 유량계에 있어서의 온도계측회로 - Google Patents
유량계에 있어서의 온도계측회로 Download PDFInfo
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- KR20100035138A KR20100035138A KR1020097012779A KR20097012779A KR20100035138A KR 20100035138 A KR20100035138 A KR 20100035138A KR 1020097012779 A KR1020097012779 A KR 1020097012779A KR 20097012779 A KR20097012779 A KR 20097012779A KR 20100035138 A KR20100035138 A KR 20100035138A
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- Prior art keywords
- resistance
- wire
- line
- electric wire
- voltage
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- 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
- G01F1/76—Devices for measuring mass flow of a fluid or a fluent solid material
- G01F1/78—Direct mass flowmeters
- G01F1/80—Direct mass flowmeters operating by measuring pressure, force, momentum, or frequency of a fluid flow to which a rotational movement has been imparted
- G01F1/84—Coriolis or gyroscopic mass flowmeters
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/02—Compensating or correcting for variations in pressure, density or temperature
- G01F15/022—Compensating or correcting for variations in pressure, density or temperature using electrical means
- G01F15/024—Compensating or correcting for variations in pressure, density or temperature using electrical means involving digital counting
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- 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
- G01F1/76—Devices for measuring mass flow of a fluid or a fluent solid material
- G01F1/78—Direct mass flowmeters
- G01F1/80—Direct mass flowmeters operating by measuring pressure, force, momentum, or frequency of a fluid flow to which a rotational movement has been imparted
- G01F1/84—Coriolis or gyroscopic mass flowmeters
- G01F1/8409—Coriolis or gyroscopic mass flowmeters constructional details
- G01F1/8431—Coriolis or gyroscopic mass flowmeters constructional details electronic circuits
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- 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
- G01F1/76—Devices for measuring mass flow of a fluid or a fluent solid material
- G01F1/78—Direct mass flowmeters
- G01F1/80—Direct mass flowmeters operating by measuring pressure, force, momentum, or frequency of a fluid flow to which a rotational movement has been imparted
- G01F1/84—Coriolis or gyroscopic mass flowmeters
- G01F1/8409—Coriolis or gyroscopic mass flowmeters constructional details
- G01F1/8436—Coriolis or gyroscopic mass flowmeters constructional details signal processing
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- 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
- G01F1/76—Devices for measuring mass flow of a fluid or a fluent solid material
- G01F1/86—Indirect mass flowmeters, e.g. measuring volume flow and density, temperature or pressure
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F25/00—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/02—Means for indicating or recording specially adapted for thermometers
- G01K1/026—Means for indicating or recording specially adapted for thermometers arrangements for monitoring a plurality of temperatures, e.g. by multiplexing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
- G01K13/02—Thermometers specially adapted for specific purposes for measuring temperature of moving fluids or granular materials capable of flow
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
- G01K7/18—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a linear resistance, e.g. platinum resistance thermometer
- G01K7/20—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a linear resistance, e.g. platinum resistance thermometer in a specially-adapted circuit, e.g. bridge circuit
- G01K7/206—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a linear resistance, e.g. platinum resistance thermometer in a specially-adapted circuit, e.g. bridge circuit in a potentiometer circuit
Abstract
Description
Claims (2)
- 유량계에 있어서의 제1 및 제2 계측 위치에 설치되는 동시에 각 일단끼리를 접속하는 것에 의해 직렬인 접속 상태가 되는 제1 및 제2 저항형 온도 센서와,선간 저항을 가지며 상기 제1 저항형 온도 센서의 타단에 접속되는 제1 전선과,전원 저항을 사이에 두고 상기 제1 전선에 접속되는 전압 기준과,선간 저항을 가지며 상기 제1 및 제2 저항형 온도 센서의 각 일단에 접속되는 제2 전선과,선간 저항을 가지며 상기 제2 저항형 온도 센서의 타단에 접속되는 제3 전선과,상기 제3 전선에 일단이 접속되고 타단측이 접지되는 기준 저항과,상기 제2 전선 및 상기 제3 전선에 걸쳐 접속되고, 이들을 도통 상태 또는 비도통 상태로 하는 스위칭 디바이스와,상기 제1 전선, 상기 제2 전선, 상기 제3 전선, 및 상기 기준 저항의 접지측중의 어느 하나를 선택하는 멀티 플렉서와,상기 멀티 플렉서에 의해 선택된 각 분압 전압을 A/D변환하는 A/D컨버터와,상기 스위칭 디바이스를 제어하는 동시에 상기 A/D컨버터로부터의 신호가 입력되는 연산·제어장치를 구비하고,상기 연산·제어장치는, 상기 제2 전선 및 상기 제3 전선 사이가 도통 상태 에서의 상기 분압 전압에 기초한 전압비와 상기 기준 저항과의 곱으로 구해지는 저항치로부터, 비도통 상태에서의 상기 분압 전압에 기초한 전압비와 상기 기준 저항과의 곱으로 구해지는 저항치를 감산하는 것에 의해 상기 선간 저항을 구하는 것을 특징으로 하는 유량계에 있어서의 온도계측회로.
- 제 1 항에 있어서,상기 구해진 선간 저항을 상기 제2 저항형 온도 센서에 관한 쌍곡선 근사식으로 보정함으로써 보정후의 선간 저항을 구하는 것을 특징으로 하는 유량계에 있어서의 온도계측회로.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JPJP-P-2008-193343 | 2008-07-28 | ||
JP2008193343A JP4274385B1 (ja) | 2008-07-28 | 2008-07-28 | 流量計における温度計測回路 |
PCT/JP2008/069078 WO2010013360A1 (ja) | 2008-07-28 | 2008-10-15 | 流量計における温度計測回路 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20100035138A true KR20100035138A (ko) | 2010-04-02 |
KR101057555B1 KR101057555B1 (ko) | 2011-08-17 |
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Application Number | Title | Priority Date | Filing Date |
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KR1020097012779A KR101057555B1 (ko) | 2008-07-28 | 2008-10-15 | 유량계에 있어서의 온도계측회로 |
Country Status (7)
Country | Link |
---|---|
US (1) | US8051708B2 (ko) |
EP (1) | EP2306168B1 (ko) |
JP (1) | JP4274385B1 (ko) |
KR (1) | KR101057555B1 (ko) |
CN (1) | CN101828100B (ko) |
TW (1) | TWI382163B (ko) |
WO (1) | WO2010013360A1 (ko) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
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CN102497193B (zh) * | 2011-11-23 | 2013-07-31 | 中国人民解放军海军工程大学 | 一种高精度的模拟乘法器零漂补偿电路 |
JP5888499B2 (ja) * | 2012-02-01 | 2016-03-22 | 横河電機株式会社 | 温度伝送器 |
JP5981319B2 (ja) * | 2012-11-22 | 2016-08-31 | 日立オートモティブシステムズ株式会社 | 吸気温度センサ装置および流量測定装置 |
CN107764350B (zh) * | 2016-08-18 | 2020-05-08 | 高准有限公司 | 质量流量测量方法和质量流量计 |
WO2018121930A1 (de) | 2016-12-29 | 2018-07-05 | Endress+Hauser Flowtec Ag | VIBRONISCHES MEßSYSTEM ZUM MESSEN EINER MASSENDURCHFLUßRATE |
US10928233B2 (en) * | 2016-12-29 | 2021-02-23 | Endress+Hauser Flowtec Ag | Vibronic measuring system for measuring a mass flow rate |
DE102018102379B4 (de) * | 2018-02-02 | 2023-02-02 | Endress + Hauser Flowtec Ag | Coriolis-Messaufnehmer eines Coriolis-Messgeräts mit einer in Schwingungserreger bzw. Schwingungssensor integrierten Temperaturmessvorrichtung und ein solches Coriolis-Messgerät |
Family Cites Families (10)
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JPS63132328U (ko) * | 1987-02-20 | 1988-08-30 | ||
JPH01291133A (ja) * | 1988-05-17 | 1989-11-22 | Yokogawa Electric Corp | 測温抵抗体温度変換装置 |
US5264341A (en) | 1989-08-30 | 1993-11-23 | Eli Lilly And Company | Selective cloning for high monoclonal antibody secreting hybridomas |
US5317520A (en) * | 1991-07-01 | 1994-05-31 | Moore Industries International Inc. | Computerized remote resistance measurement system with fault detection |
US5379649A (en) | 1991-12-23 | 1995-01-10 | Micro Motion, Inc. | Coriolis effect meter using optical fiber sensors |
JP3075072B2 (ja) * | 1994-04-20 | 2000-08-07 | 株式会社日立製作所 | 温度変換器 |
US5929344A (en) * | 1997-07-28 | 1999-07-27 | Micro Motion, Inc. | Circuitry for reducing the number of conductors for multiple resistive sensors on a coriolis effect mass flowmeter |
AU2003256591A1 (en) * | 2002-07-19 | 2004-02-09 | Celerity Group Inc. | Variable resistance sensor with common reference leg |
JP2004157024A (ja) * | 2002-11-07 | 2004-06-03 | Omron Corp | 温度検出装置 |
JP4359705B2 (ja) * | 2003-12-08 | 2009-11-04 | 株式会社日立製作所 | 発熱抵抗式流量測定装置 |
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2008
- 2008-07-28 JP JP2008193343A patent/JP4274385B1/ja active Active
- 2008-10-15 US US12/520,249 patent/US8051708B2/en active Active
- 2008-10-15 EP EP08876658.9A patent/EP2306168B1/en active Active
- 2008-10-15 CN CN200880003297XA patent/CN101828100B/zh active Active
- 2008-10-15 KR KR1020097012779A patent/KR101057555B1/ko active IP Right Grant
- 2008-10-15 WO PCT/JP2008/069078 patent/WO2010013360A1/ja active Application Filing
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2009
- 2009-03-16 TW TW098108451A patent/TWI382163B/zh active
Also Published As
Publication number | Publication date |
---|---|
CN101828100B (zh) | 2012-05-30 |
US20100326185A1 (en) | 2010-12-30 |
TWI382163B (zh) | 2013-01-11 |
EP2306168A1 (en) | 2011-04-06 |
JP4274385B1 (ja) | 2009-06-03 |
KR101057555B1 (ko) | 2011-08-17 |
WO2010013360A1 (ja) | 2010-02-04 |
TW201005272A (en) | 2010-02-01 |
EP2306168B1 (en) | 2017-12-06 |
EP2306168A4 (en) | 2016-02-24 |
CN101828100A (zh) | 2010-09-08 |
JP2010032299A (ja) | 2010-02-12 |
US8051708B2 (en) | 2011-11-08 |
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