GB971893A - Improvements in the electrical measurement of physical quantities - Google Patents

Improvements in the electrical measurement of physical quantities

Info

Publication number
GB971893A
GB971893A GB164260A GB164260A GB971893A GB 971893 A GB971893 A GB 971893A GB 164260 A GB164260 A GB 164260A GB 164260 A GB164260 A GB 164260A GB 971893 A GB971893 A GB 971893A
Authority
GB
United Kingdom
Prior art keywords
resistance
bridge
circuits
resistors
ratio arms
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
GB164260A
Inventor
William Henderson Pater Leslie
Joseph Johnston Hunter
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.)
Council of Scientific and Industrial Research CSIR
Original Assignee
Council of Scientific and Industrial Research CSIR
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 Council of Scientific and Industrial Research CSIR filed Critical Council of Scientific and Industrial Research CSIR
Priority to GB164260A priority Critical patent/GB971893A/en
Priority to GB397964A priority patent/GB971894A/en
Publication of GB971893A publication Critical patent/GB971893A/en
Expired 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
    • G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
    • G01L1/22—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
    • G01L1/225—Measuring circuits therefor
    • 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
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L1/00—Measuring force or stress, in general
    • G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
    • 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

Landscapes

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

Abstract

971, 893. Measuring temperature electrically. COUNCIL FOR SCIENTIFIC & INDUSTRIAL RESEARCH. Jan. 31, 1961 [Jan. 15, 1960], No. 1642/60. Heading G1N. [Also in Division H1] A resistance thermometer comprises two resistors having different temperature co-efficients of resistivity each resistor being wound on a support of the same material as the wire of the corresponding resistor, (see Division H1). The two elements are connected in A.C. bridge or differential circuits the circuits being adapted to avoid errors due to the resistance of the connecting leads, and having transformer ratio arms. Fig. 2 shows one embodiment in which the current supply to the measuring resistors X and Y is via transformer S while the remainder of the bridge circuit comprising transformer ratio arms t and nt and detector can be located remote from the measuring resistors X and Y, the high impedance of the transformer ratio arms preventing the resistance of the connecting leads having much effect on the measurement. Other bridge circuits suitable for use with the elements according to this invention are described in Specification 971, 894.
GB164260A 1960-01-15 1960-01-15 Improvements in the electrical measurement of physical quantities Expired GB971893A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB164260A GB971893A (en) 1960-01-15 1960-01-15 Improvements in the electrical measurement of physical quantities
GB397964A GB971894A (en) 1960-01-15 1960-01-15 Improvements in electrical instruments for the measurement of physical quantities

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB164260A GB971893A (en) 1960-01-15 1960-01-15 Improvements in the electrical measurement of physical quantities

Publications (1)

Publication Number Publication Date
GB971893A true GB971893A (en) 1964-10-07

Family

ID=9725482

Family Applications (2)

Application Number Title Priority Date Filing Date
GB164260A Expired GB971893A (en) 1960-01-15 1960-01-15 Improvements in the electrical measurement of physical quantities
GB397964A Expired GB971894A (en) 1960-01-15 1960-01-15 Improvements in electrical instruments for the measurement of physical quantities

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB397964A Expired GB971894A (en) 1960-01-15 1960-01-15 Improvements in electrical instruments for the measurement of physical quantities

Country Status (1)

Country Link
GB (2) GB971893A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2277377A (en) * 1993-04-20 1994-10-26 Hong Chin Chen Temperature measuring device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2277377A (en) * 1993-04-20 1994-10-26 Hong Chin Chen Temperature measuring device

Also Published As

Publication number Publication date
GB971894A (en) 1964-10-07

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