GB1065412A - Temperature detector - Google Patents

Temperature detector

Info

Publication number
GB1065412A
GB1065412A GB1268564A GB1268564A GB1065412A GB 1065412 A GB1065412 A GB 1065412A GB 1268564 A GB1268564 A GB 1268564A GB 1268564 A GB1268564 A GB 1268564A GB 1065412 A GB1065412 A GB 1065412A
Authority
GB
United Kingdom
Prior art keywords
temperature
series
resistor
indicating
resistors
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
GB1268564A
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Publication of GB1065412A publication Critical patent/GB1065412A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/04—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having negative temperature coefficient
    • 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
    • G01D3/00—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups
    • G01D3/028—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups mitigating undesired influences, e.g. temperature, pressure
    • 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
    • G01D3/00—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups
    • G01D3/08—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups with provision for safeguarding the apparatus, e.g. against abnormal operation, against breakdown
    • 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
    • G01K7/22—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 non-linear resistance, e.g. thermistor
    • G—PHYSICS
    • G12—INSTRUMENT DETAILS
    • G12B—CONSTRUCTIONAL DETAILS OF INSTRUMENTS, OR COMPARABLE DETAILS OF OTHER APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G12B7/00—Compensating for the effects of temperature

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Nonlinear Science (AREA)
  • Electromagnetism (AREA)
  • Thermistors And Varistors (AREA)
  • Emergency Alarm Devices (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
  • Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)

Abstract

1,065,412. Temperature sensitive resistors. HITACHI SEISAKUSHO KABUSHIKI KAISHA. March 25, 1964 [March 29, 1963], No. 12685/64. Heading H1K. A resistor consisting of a mixture of vanadium pentoxide and at least one basic or acidic oxide and having a resistance which decreases abruptly at a predetermined temperature is connected in series with a resistor across a power source. The voltage applied by the source is equal to the maximum voltage value of the currentvoltage characteristic of the resistor at an ambient temperature corresponding to said predetermined temperature so that the current increases abruptly to a new stable value when this temperature is exceeded. The change in currentoperates a relay or an alarm or indicating device. Several parallel connected resistors mounted in different locations may be connected in series with a common power source and a device indicating when the ambient temperature of any device exceeds the predetermined value, pilot lamps in series with the individual resistors indicating where the temperature is exceeded.
GB1268564A 1963-03-29 1964-03-25 Temperature detector Expired GB1065412A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1413863 1963-03-29

Publications (1)

Publication Number Publication Date
GB1065412A true GB1065412A (en) 1967-04-12

Family

ID=11852770

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1268564A Expired GB1065412A (en) 1963-03-29 1964-03-25 Temperature detector

Country Status (2)

Country Link
DE (1) DE1473282B2 (en)
GB (1) GB1065412A (en)

Also Published As

Publication number Publication date
DE1473282A1 (en) 1968-11-28
DE1473282B2 (en) 1970-10-08

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