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GB2018434A - Measuring temperature - Google Patents

Measuring temperature

Info

Publication number
GB2018434A
GB2018434A GB7911176A GB7911176A GB2018434A GB 2018434 A GB2018434 A GB 2018434A GB 7911176 A GB7911176 A GB 7911176A GB 7911176 A GB7911176 A GB 7911176A GB 2018434 A GB2018434 A GB 2018434A
Authority
GB
United Kingdom
Prior art keywords
switch control
positive
reference voltage
processing unit
thermocouple
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.)
Granted
Application number
GB7911176A
Other versions
GB2018434B (en
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.)
Babcock Partner No 6 Ltd
Original Assignee
Hawker Siddeley Dynamics Engineering 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 Hawker Siddeley Dynamics Engineering Ltd filed Critical Hawker Siddeley Dynamics Engineering Ltd
Priority to GB7911176A priority Critical patent/GB2018434B/en
Publication of GB2018434A publication Critical patent/GB2018434A/en
Application granted granted Critical
Publication of GB2018434B publication Critical patent/GB2018434B/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
    • G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
    • G01K1/02—Means for indicating or recording specially adapted for thermometers
    • G01K1/024—Means for indicating or recording specially adapted for thermometers for remote indication
    • 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
    • G01K7/02—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using thermoelectric elements, e.g. thermocouples
    • G01K7/021—Particular circuit arrangements

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Investigating Or Analyzing Materials Using Thermal Means (AREA)

Abstract

In a temperature measurement system, a thermocouple 1 and a reference voltage source 2 in turn supply voltages via solid state switches 4 to the centre-tapped primary winding of a transformer 6. The output voltages of the transformer secondary winding are applied via an analogue-to digital converter 10 to a crystal-clock-regulated digital processing unit 11 that obtains the difference of positive and negative voltages derived from the thermocouple signal, and positive and negative voltages derived from the reference voltage, for subsequent ratiometric processing. The switches 4 are operated by a switch control unit 3 that responds to signals arriving via electrically-isolating transducers 5 from switch control latches 8 that receive switch control outputs from the digital processing unit 11. <IMAGE>
GB7911176A 1978-04-05 1979-03-30 Measuring temperature Expired GB2018434B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7911176A GB2018434B (en) 1978-04-05 1979-03-30 Measuring temperature

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1326078 1978-04-05
GB7911176A GB2018434B (en) 1978-04-05 1979-03-30 Measuring temperature

Publications (2)

Publication Number Publication Date
GB2018434A true GB2018434A (en) 1979-10-17
GB2018434B GB2018434B (en) 1982-07-28

Family

ID=26249659

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7911176A Expired GB2018434B (en) 1978-04-05 1979-03-30 Measuring temperature

Country Status (1)

Country Link
GB (1) GB2018434B (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4663710A (en) * 1981-05-15 1987-05-05 The Frymaster Corporation Intelligent cooking appliance
US4755958A (en) * 1985-07-17 1988-07-05 Mitsubishi Denki Kabushiki Kaisha Temperature measuring apparatus
EP0352837A2 (en) * 1988-07-29 1990-01-31 POMINI S.p.A. Device for measuring the temperature of the material contained in a closed apparatus
GB2256927A (en) * 1991-06-21 1992-12-23 Crystal Semiconductor Corp Ratiometric a/d converter with non-ratiometric offset error correction
EP1072876A1 (en) * 1999-07-22 2001-01-31 Webasto Thermosysteme International GmbH Circuit for evaluating thermocouple measurement signals

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4663710A (en) * 1981-05-15 1987-05-05 The Frymaster Corporation Intelligent cooking appliance
US4755958A (en) * 1985-07-17 1988-07-05 Mitsubishi Denki Kabushiki Kaisha Temperature measuring apparatus
EP0352837A2 (en) * 1988-07-29 1990-01-31 POMINI S.p.A. Device for measuring the temperature of the material contained in a closed apparatus
EP0352837A3 (en) * 1988-07-29 1990-10-17 POMINI S.p.A. Device for measuring the temperature of the material contained in a closed apparatus
GB2256927A (en) * 1991-06-21 1992-12-23 Crystal Semiconductor Corp Ratiometric a/d converter with non-ratiometric offset error correction
GB2256927B (en) * 1991-06-21 1995-03-22 Crystal Semiconductor Corp Ratiometric A/D converter with non-ratiometric error offset
EP1072876A1 (en) * 1999-07-22 2001-01-31 Webasto Thermosysteme International GmbH Circuit for evaluating thermocouple measurement signals

Also Published As

Publication number Publication date
GB2018434B (en) 1982-07-28

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee