GB930746A - Electrical measurements through vessel walls - Google Patents

Electrical measurements through vessel walls

Info

Publication number
GB930746A
GB930746A GB914662A GB914662A GB930746A GB 930746 A GB930746 A GB 930746A GB 914662 A GB914662 A GB 914662A GB 914662 A GB914662 A GB 914662A GB 930746 A GB930746 A GB 930746A
Authority
GB
United Kingdom
Prior art keywords
bridge
output
detector
frequency
transformer
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
GB914662A
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.)
AUTOMATIC ENERGY OF CANADA Ltd
Original Assignee
AUTOMATIC ENERGY OF CANADA Ltd
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 AUTOMATIC ENERGY OF CANADA Ltd filed Critical AUTOMATIC ENERGY OF CANADA Ltd
Publication of GB930746A publication Critical patent/GB930746A/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
    • G01K7/203—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 in an oscillator circuit
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
    • G01K1/14—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Abstract

930,746. Measuring electrically. ATOMIC ENERGY OF CANADA Ltd. March 9, 1962 [April 13, 1961], No. 9146/62. Class 40 (1). [Also in Group XXXV] Apparatus for electrically measuring a property of a substance, situated so as to prohibit direct electrical connection between it and an observing station, comprises a frequencysensitive A.C. bridge adjacent the substance, the bridge being of the type whose output is a minimum for one value of input frequency, at least one element in the bridge being variable in accordance with the property to alter the frequency at which the output is a minimum, and at least one transformer between the bridge and the observing station, constructed to permit relative movement between its primary and secondary windings. A Wien bridge including temperature-sensitive resistors 10, 11 is adjusted to minimise the inductive effect of the resistors by adjusting potentiometer 7 before sealing it inside tube 6, e.g. a nuclear fuel rod. As the temperature varies the frequency at which null output occurs is determined and is a measure of the temperature. Wall 5 is preferably non- magnetic e.g. zircalloy II or stainless steel, but may be of thin ferromagnetic material if lower frequencies are used. Tables are given of suitable transformer dimensions and electrical properties. Detector 25 may be an oscilloscope or a phase-sensitive detector. A single E-type transformer may be used for input and output if harmonics are generated from the output by feeding it through a rectifier. Tube 6 and the elements inside it may move relative to the external elements, and either the source or the detector may be enclosed with the bridge for certain applications.
GB914662A 1961-04-13 1962-03-09 Electrical measurements through vessel walls Expired GB930746A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US10286661A 1961-04-13 1961-04-13

Publications (1)

Publication Number Publication Date
GB930746A true GB930746A (en) 1963-07-10

Family

ID=22292071

Family Applications (1)

Application Number Title Priority Date Filing Date
GB914662A Expired GB930746A (en) 1961-04-13 1962-03-09 Electrical measurements through vessel walls

Country Status (2)

Country Link
GB (1) GB930746A (en)
SE (1) SE300259B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2061547A1 (en) * 1969-06-03 1971-06-25 Fr
US11359979B2 (en) * 2018-06-01 2022-06-14 Analog Devices International Unlimited Company Hybrid temperature sensor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2061547A1 (en) * 1969-06-03 1971-06-25 Fr
US11359979B2 (en) * 2018-06-01 2022-06-14 Analog Devices International Unlimited Company Hybrid temperature sensor

Also Published As

Publication number Publication date
SE300259B (en) 1968-04-22

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