GB1072231A - Improvements in or relating to thermometers - Google Patents

Improvements in or relating to thermometers

Info

Publication number
GB1072231A
GB1072231A GB3208962A GB3208962A GB1072231A GB 1072231 A GB1072231 A GB 1072231A GB 3208962 A GB3208962 A GB 3208962A GB 3208962 A GB3208962 A GB 3208962A GB 1072231 A GB1072231 A GB 1072231A
Authority
GB
United Kingdom
Prior art keywords
probe
resistors
resistor
thermistor
bridge
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
GB3208962A
Inventor
Colin Weech
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.)
DEPENDABLE RELAY Co Ltd
Original Assignee
DEPENDABLE RELAY Co 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 DEPENDABLE RELAY Co Ltd filed Critical DEPENDABLE RELAY Co Ltd
Priority to GB3208962A priority Critical patent/GB1072231A/en
Priority to GB266367A priority patent/GB1072232A/en
Publication of GB1072231A publication Critical patent/GB1072231A/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
    • G01K7/42—Circuits effecting compensation of thermal inertia; Circuits for predicting the stationary value of a temperature
    • 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
    • G01K7/24—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 in a specially-adapted circuit, e.g. bridge circuit

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Measuring Temperature Or Quantity Of Heat (AREA)

Abstract

1,072,231. Measuring temperature electrically. DEPENDABLE RELAY CO. Ltd. Nov.21, 1963 [Aug. 21, 1962; Nov. 1, 1962; Jan.24, 1963], Nos. 32089/62; 41459/62 and 3029/63. Heading G1N. A temperature measuring bridge has a thermistor 4 in one arm and resistors 2, 3 in a second arm, both arms being mounted in a probe unit A, and has resistors 5, 6 forming the other two arms mounted with a meter G in a measuring unit B, the units being connected together by plug means. The resistor 2 adjusts the calibration of the bridge, and the probe carries a further resistor 1 which adjusts sensitivity. The measuring unit B carries a D.C. supply and a Zener diode Z to stabilize the supply to the bridge, which is adjusted by a variable resistor P with reference to a standard probe held at a known temperature. A switch S applies the D.C. supply directly to the thermistor or to a further resistor to pre-heat the probe and so reduce the response time when a measurement is made. The probe A may be reverse plugged into the unit B to substitute resistors 9, 8 for resistors 2, 3 and thermistor 4, in order to monitor the battery level. The thermometer may be used in clinical applications with a range of 90‹F. to 106‹F. in 0À2‹ divisions, or the range may be extended (using resistor 1) down to 70‹F.
GB3208962A 1962-08-21 1962-08-21 Improvements in or relating to thermometers Expired GB1072231A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB3208962A GB1072231A (en) 1962-08-21 1962-08-21 Improvements in or relating to thermometers
GB266367A GB1072232A (en) 1962-08-21 1963-01-24 Improvements in or relating to thermometers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3208962A GB1072231A (en) 1962-08-21 1962-08-21 Improvements in or relating to thermometers

Publications (1)

Publication Number Publication Date
GB1072231A true GB1072231A (en) 1967-06-14

Family

ID=10333050

Family Applications (2)

Application Number Title Priority Date Filing Date
GB3208962A Expired GB1072231A (en) 1962-08-21 1962-08-21 Improvements in or relating to thermometers
GB266367A Expired GB1072232A (en) 1962-08-21 1963-01-24 Improvements in or relating to thermometers

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB266367A Expired GB1072232A (en) 1962-08-21 1963-01-24 Improvements in or relating to thermometers

Country Status (1)

Country Link
GB (2) GB1072231A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08292108A (en) * 1995-02-23 1996-11-05 Nippondenso Co Ltd Thermistor type temperature sensor

Also Published As

Publication number Publication date
GB1072232A (en) 1967-06-14

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