GB647025A - Electric measuring apparatus - Google Patents

Electric measuring apparatus

Info

Publication number
GB647025A
GB647025A GB15696/48A GB1569648A GB647025A GB 647025 A GB647025 A GB 647025A GB 15696/48 A GB15696/48 A GB 15696/48A GB 1569648 A GB1569648 A GB 1569648A GB 647025 A GB647025 A GB 647025A
Authority
GB
United Kingdom
Prior art keywords
arm
variable
bridge
resistance
balanced
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
GB15696/48A
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 GB647025A publication Critical patent/GB647025A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/16—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R17/00—Measuring arrangements involving comparison with a reference value, e.g. bridge
    • G01R17/02—Arrangements in which the value to be measured is automatically compared with a reference value

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Resistance Or Impedance (AREA)
  • Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)

Abstract

647,025. Resistance measurements. FOXBORO CO. July 24, 1944, No. 15696. Convention date, July 28, 1943. Divided out of 646,981. Drawings to Specification. [Class 37] [Also in Group XXXVIII] A resistance responsive to a variable such as temperature, pressure, flow, strain, &c. is connected in one arm of an A.C.-fed network automatically balanced by adjustment of a variable condenser in another arm. The network may be a single bridge network or the condenser may form an arm of one bridge, the output of which is balanced against that of a second bridge having the resistance in one arm. The outputs of a plurality of bridges having such a variable resistance arm may be balanced successively against the output of the bridge having the capacity adjusting arm, e.g. to measure successively the value of a variable such as strain at various positions in a structure. The detailed description is identical with part of that of Specification 646,981.
GB15696/48A 1943-07-28 1944-07-24 Electric measuring apparatus Expired GB647025A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US647025XA 1943-07-28 1943-07-28

Publications (1)

Publication Number Publication Date
GB647025A true GB647025A (en) 1950-12-06

Family

ID=22057738

Family Applications (1)

Application Number Title Priority Date Filing Date
GB15696/48A Expired GB647025A (en) 1943-07-28 1944-07-24 Electric measuring apparatus

Country Status (1)

Country Link
GB (1) GB647025A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1265432B (en) * 1958-03-14 1968-04-04 Pierre Buisson Electrical multiple measuring arrangement for successive measurement and simultaneous display of several physical quantities

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1265432B (en) * 1958-03-14 1968-04-04 Pierre Buisson Electrical multiple measuring arrangement for successive measurement and simultaneous display of several physical quantities

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