IL44676A - Current transmitter circuitry to provide an output varying as the square root of a measured variable condition - Google Patents

Current transmitter circuitry to provide an output varying as the square root of a measured variable condition

Info

Publication number
IL44676A
IL44676A IL44676A IL4467674A IL44676A IL 44676 A IL44676 A IL 44676A IL 44676 A IL44676 A IL 44676A IL 4467674 A IL4467674 A IL 4467674A IL 44676 A IL44676 A IL 44676A
Authority
IL
Israel
Prior art keywords
signal
transmitter
input
resistance
photosensitive
Prior art date
Application number
IL44676A
Other languages
English (en)
Other versions
IL44676A0 (en
Original Assignee
Rosemount Inc
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 Rosemount Inc filed Critical Rosemount Inc
Publication of IL44676A0 publication Critical patent/IL44676A0/xx
Publication of IL44676A publication Critical patent/IL44676A/en

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C19/00—Electric signal transmission systems
    • G08C19/02—Electric signal transmission systems in which the signal transmitted is magnitude of current or voltage
    • 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
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06G—ANALOGUE COMPUTERS
    • G06G7/00—Devices in which the computing operation is performed by varying electric or magnetic quantities
    • G06G7/12—Arrangements for performing computing operations, e.g. operational amplifiers
    • G06G7/20—Arrangements for performing computing operations, e.g. operational amplifiers for evaluating powers, roots, polynomes, mean square values, standard deviation

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Computer Hardware Design (AREA)
  • Software Systems (AREA)
  • Fluid Mechanics (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Indication And Recording Devices For Special Purposes And Tariff Metering Devices (AREA)
  • Measuring Volume Flow (AREA)
  • Amplifiers (AREA)
  • Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
IL44676A 1973-04-30 1974-04-22 Current transmitter circuitry to provide an output varying as the square root of a measured variable condition IL44676A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00355816A US3854039A (en) 1973-04-30 1973-04-30 Current transmitter circuitry to provide an output varying as the square root of a measured variable condition

Publications (2)

Publication Number Publication Date
IL44676A0 IL44676A0 (en) 1975-03-13
IL44676A true IL44676A (en) 1976-07-30

Family

ID=23398956

Family Applications (1)

Application Number Title Priority Date Filing Date
IL44676A IL44676A (en) 1973-04-30 1974-04-22 Current transmitter circuitry to provide an output varying as the square root of a measured variable condition

Country Status (8)

Country Link
US (1) US3854039A (de)
JP (2) JPS5931119B2 (de)
BR (1) BR7403504D0 (de)
CA (1) CA1017012A (de)
DE (1) DE2420377C2 (de)
FR (1) FR2227583B1 (de)
GB (1) GB1454650A (de)
IL (1) IL44676A (de)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5533493Y2 (de) * 1975-03-22 1980-08-08
JPS5818678B2 (ja) * 1975-08-25 1983-04-14 横河電機株式会社 変位電気信号変換装置
US4102199A (en) * 1976-08-26 1978-07-25 Megasystems, Inc. RTD measurement system
US4250490A (en) * 1979-01-19 1981-02-10 Rosemount Inc. Two wire transmitter for converting a varying signal from a remote reactance sensor to a DC current signal
US4339750A (en) * 1980-08-20 1982-07-13 Rosemount Inc. Low power transmitter
US4331912A (en) * 1980-10-06 1982-05-25 Rosemount Inc. Circuit for converting a non-live zero current signal to a live zero DC output signal
JPS60152238U (ja) * 1984-03-21 1985-10-09 東洋電装株式会社 ピアノ型スイツチ
US4741214A (en) * 1986-09-19 1988-05-03 Combustion Engineering, Inc. Capacitive transducer with static compensation
JPS6444540U (de) * 1987-09-14 1989-03-16
US5616846A (en) * 1994-10-27 1997-04-01 Kwasnik; Joseph W. Method and apparatus for current regulation and temperature compensation
JP2005345377A (ja) * 2004-06-04 2005-12-15 Mitsubishi Electric Corp 回転情報検出装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3016197A (en) * 1958-09-15 1962-01-09 Honeywell Regulator Co Square root extracting integrator
US3043516A (en) * 1959-10-01 1962-07-10 Gen Electric Time summing device for division, multiplication, root taking and interpolation
US3328569A (en) * 1963-11-14 1967-06-27 Bailey Meter Co Square root extracting network
US3496346A (en) * 1965-10-20 1970-02-17 Fischer & Porter Co Square root extractor
US3646538A (en) * 1969-10-27 1972-02-29 Rosemount Eng Co Ltd Transducer circuitry for converting a capacitance signal to a dc current signal
US3663833A (en) * 1970-04-02 1972-05-16 Monsanto Co Square root extractor for a process control system
US3679884A (en) * 1970-04-13 1972-07-25 Coulter Electronics Mathematic root computer

Also Published As

Publication number Publication date
DE2420377C2 (de) 1986-05-15
CA1017012A (en) 1977-09-06
US3854039A (en) 1974-12-10
FR2227583A1 (de) 1974-11-22
FR2227583B1 (de) 1981-10-09
JPS58149595A (ja) 1983-09-05
IL44676A0 (en) 1975-03-13
JPS5015569A (de) 1975-02-19
AU6807574A (en) 1975-10-23
DE2420377A1 (de) 1974-11-07
GB1454650A (en) 1976-11-03
BR7403504D0 (pt) 1974-11-19
JPS5931119B2 (ja) 1984-07-31
JPS5932840B2 (ja) 1984-08-11

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