FR2438828A1 - Appareil de mesure avec emetteur de signal electrique, notamment pour la surveillance a distance de processus industriels - Google Patents

Appareil de mesure avec emetteur de signal electrique, notamment pour la surveillance a distance de processus industriels

Info

Publication number
FR2438828A1
FR2438828A1 FR7925185A FR7925185A FR2438828A1 FR 2438828 A1 FR2438828 A1 FR 2438828A1 FR 7925185 A FR7925185 A FR 7925185A FR 7925185 A FR7925185 A FR 7925185A FR 2438828 A1 FR2438828 A1 FR 2438828A1
Authority
FR
France
Prior art keywords
electric signal
measuring apparatus
signal transmitter
remote monitoring
industrial processes
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
Application number
FR7925185A
Other languages
English (en)
Other versions
FR2438828B1 (fr
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schneider Electric Systems USA Inc
Original Assignee
Foxboro Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Foxboro Co filed Critical Foxboro Co
Publication of FR2438828A1 publication Critical patent/FR2438828A1/fr
Application granted granted Critical
Publication of FR2438828B1 publication Critical patent/FR2438828B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L1/00—Measuring force or stress, in general
    • G01L1/10—Measuring force or stress, in general by measuring variations of frequency of stressed vibrating elements, e.g. of stressed strings
    • 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
    • G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
    • G01F1/34—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure
    • G01F1/36—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure the pressure or differential pressure being created by the use of flow constriction
    • G01F1/363—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure the pressure or differential pressure being created by the use of flow constriction with electrical or electro-mechanical indication
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
    • G01L9/0001—Transmitting or indicating the displacement of elastically deformable gauges by electric, electro-mechanical, magnetic or electro-magnetic means
    • G01L9/0008—Transmitting or indicating the displacement of elastically deformable gauges by electric, electro-mechanical, magnetic or electro-magnetic means using vibrations
    • G01L9/0013—Transmitting or indicating the displacement of elastically deformable gauges by electric, electro-mechanical, magnetic or electro-magnetic means using vibrations of a string

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)

Abstract

L'INVENTION CONCERNE UN APPAREIL DE MESURE AVEC UN EMETTEUR DE SIGNAL ELECTRIQUE. IL COMPORTE UN CAPTEUR 10 QUI PRODUIT UN SIGNAL ELECTRIQUE DONT LA FREQUENCE REPRESENTE UNE VARIABLE ET QUI EST EMIS PAR UNE LIGNE BIFILAIRE 14 VERS UN POSTE CENTRAL 16 DANS LEQUEL IL EST TRAITE DE MANIERE A PRODUIRE UNE TENSION CONTINUE QUI VARIE LENTEMENT EN FONCTION DE LA VALEUR DE LA VARIABLE MESUREE. CETTE TENSION CONTINUE EST RETOURNEE PAR LA LIGNE BIFILAIRE 14 VERS LE CAPTEUR 10 OU ELLE PEUT ETRE VISUALISEE PAR UN APPAREIL DE MESURE 18. L'INVENTION S'APPLIQUE NOTAMMENT A LA MESURE D'UNE PRESSION DIFFERENTIELLE DANS UN PROCESSUS INDUSTRIEL.
FR7925185A 1978-10-13 1979-10-10 Appareil de mesure avec emetteur de signal electrique, notamment pour la surveillance a distance de processus industriels Granted FR2438828A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US95152078A 1978-10-13 1978-10-13

Publications (2)

Publication Number Publication Date
FR2438828A1 true FR2438828A1 (fr) 1980-05-09
FR2438828B1 FR2438828B1 (fr) 1984-05-25

Family

ID=25491774

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7925185A Granted FR2438828A1 (fr) 1978-10-13 1979-10-10 Appareil de mesure avec emetteur de signal electrique, notamment pour la surveillance a distance de processus industriels

Country Status (7)

Country Link
JP (1) JPS5553798A (fr)
CA (1) CA1126049A (fr)
DE (1) DE2941466C2 (fr)
FR (1) FR2438828A1 (fr)
GB (1) GB2034038B (fr)
IT (1) IT1128750B (fr)
NL (1) NL7907407A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2483613A1 (fr) * 1980-06-02 1981-12-04 Foxboro Co Appareil de mesure de processus industriel utilisant un capteur a resonance

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014103309A1 (fr) * 2012-12-28 2014-07-03 パナソニック株式会社 Méthode de commande
CN117433623A (zh) * 2023-12-21 2024-01-23 福建省计量科学研究院（福建省眼镜质量检验站） 一种基于瞬间抑制的高精准测读仪校准装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2285667A1 (fr) * 1974-09-23 1976-04-16 Philips Nv Circuit de transmission de signaux de valeurs mesurees
FR2339904A1 (fr) * 1976-01-28 1977-08-26 Nordstjernan Rederi Ab Procede pour detecter l'etat oscillant d'un systeme oscillant dans un transmetteur et dispositif pour la mise en oeuvre de ce procede
FR2366539A1 (fr) * 1976-10-13 1978-04-28 Foxboro Co Emetteur de signal electrique pour un detecteur a fil vibrant

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2285667A1 (fr) * 1974-09-23 1976-04-16 Philips Nv Circuit de transmission de signaux de valeurs mesurees
FR2339904A1 (fr) * 1976-01-28 1977-08-26 Nordstjernan Rederi Ab Procede pour detecter l'etat oscillant d'un systeme oscillant dans un transmetteur et dispositif pour la mise en oeuvre de ce procede
FR2366539A1 (fr) * 1976-10-13 1978-04-28 Foxboro Co Emetteur de signal electrique pour un detecteur a fil vibrant
US4118977A (en) * 1976-10-13 1978-10-10 The Foxboro Company Electric signal transmitter for vibrating-wire sensor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2483613A1 (fr) * 1980-06-02 1981-12-04 Foxboro Co Appareil de mesure de processus industriel utilisant un capteur a resonance

Also Published As

Publication number Publication date
NL7907407A (nl) 1980-04-15
IT7950525A0 (it) 1979-10-11
IT1128750B (it) 1986-06-04
DE2941466C2 (de) 1985-12-12
GB2034038A (en) 1980-05-29
DE2941466A1 (de) 1980-04-24
JPS6246916B2 (fr) 1987-10-05
CA1126049A (fr) 1982-06-22
FR2438828B1 (fr) 1984-05-25
GB2034038B (en) 1983-06-15
JPS5553798A (en) 1980-04-19

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Legal Events

Date Code Title Description
ST Notification of lapse