CA1126049A - Instrumentation system with electric signal transmitter - Google Patents

Instrumentation system with electric signal transmitter

Info

Publication number
CA1126049A
CA1126049A CA337,503A CA337503A CA1126049A CA 1126049 A CA1126049 A CA 1126049A CA 337503 A CA337503 A CA 337503A CA 1126049 A CA1126049 A CA 1126049A
Authority
CA
Canada
Prior art keywords
signal
current
wire
transmitter
station
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.)
Expired
Application number
CA337,503A
Other languages
English (en)
French (fr)
Inventor
David A. Richardson
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
Application granted granted Critical
Publication of CA1126049A publication Critical patent/CA1126049A/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01LMEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L1/00Measuring force or stress, in general
    • G01L1/10Measuring force or stress, in general by measuring variations of frequency of stressed vibrating elements, e.g. of stressed strings
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01FMEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/05Measuring 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
    • G01F1/34Measuring 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
    • G01F1/36Measuring 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
    • G01F1/363Measuring 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
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01LMEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L9/00Measuring 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
    • G01L9/0001Transmitting or indicating the displacement of elastically deformable gauges by electric, electro-mechanical, magnetic or electro-magnetic means
    • G01L9/0008Transmitting or indicating the displacement of elastically deformable gauges by electric, electro-mechanical, magnetic or electro-magnetic means using vibrations
    • G01L9/0013Transmitting 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)
CA337,503A 1978-10-13 1979-10-12 Instrumentation system with electric signal transmitter Expired CA1126049A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US95152078A 1978-10-13 1978-10-13
US951,520 1978-10-13

Publications (1)

Publication Number Publication Date
CA1126049A true CA1126049A (en) 1982-06-22

Family

ID=25491774

Family Applications (1)

Application Number Title Priority Date Filing Date
CA337,503A Expired CA1126049A (en) 1978-10-13 1979-10-12 Instrumentation system with electric signal transmitter

Country Status (7)

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

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4372164A (en) * 1980-06-02 1983-02-08 The Foxboro Company Industrial process control instrument employing a resonant sensor
WO2014103309A1 (ja) * 2012-12-28 2014-07-03 パナソニック株式会社 制御方法
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

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2445337C2 (de) * 1974-09-23 1986-05-15 Philips Patentverwaltung Gmbh, 2000 Hamburg Schaltungsanordnung zur Übertragung von elektrischen Meßwertsignalen
SE400385B (sv) * 1976-01-28 1978-03-20 Nordstjernan Rederi Ab Forfarande for att i ett svengande system i en metgivare avkenna systemets svengningstillstand samt anordning for genomforande av forfarandet
US4118977A (en) * 1976-10-13 1978-10-10 The Foxboro Company Electric signal transmitter for vibrating-wire sensor

Also Published As

Publication number Publication date
DE2941466A1 (de) 1980-04-24
IT7950525A0 (it) 1979-10-11
GB2034038B (en) 1983-06-15
IT1128750B (it) 1986-06-04
GB2034038A (en) 1980-05-29
FR2438828B1 (de) 1984-05-25
JPS6246916B2 (de) 1987-10-05
DE2941466C2 (de) 1985-12-12
JPS5553798A (en) 1980-04-19
FR2438828A1 (fr) 1980-05-09
NL7907407A (nl) 1980-04-15

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Legal Events

Date Code Title Description
MKEX Expiry