GB867402A - Improvements in or relating to thermocouple systems - Google Patents

Improvements in or relating to thermocouple systems

Info

Publication number
GB867402A
GB867402A GB1177158A GB1177158A GB867402A GB 867402 A GB867402 A GB 867402A GB 1177158 A GB1177158 A GB 1177158A GB 1177158 A GB1177158 A GB 1177158A GB 867402 A GB867402 A GB 867402A
Authority
GB
United Kingdom
Prior art keywords
resistors
temperature
thermocouple
enclosure
output
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
GB1177158A
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.)
MALDWYN EDWARD PEPLOW
Central Electricity Generating Board
Original Assignee
MALDWYN EDWARD PEPLOW
Central Electricity Generating Board
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 MALDWYN EDWARD PEPLOW, Central Electricity Generating Board filed Critical MALDWYN EDWARD PEPLOW
Priority to GB1177158A priority Critical patent/GB867402A/en
Publication of GB867402A publication Critical patent/GB867402A/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
    • G01K7/02—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
    • G01K7/10—Arrangements for compensating for auxiliary variables, e.g. length of lead
    • G01K7/12—Arrangements with respect to the cold junction, e.g. preventing influence of temperature of surrounding air
    • G01K7/13—Circuits for cold-junction compensation

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Thermally Actuated Switches (AREA)

Abstract

867,402. Thermocouple systems. CENTRAL ELECTRICITY GENERATING BOARD, LUCAS, D. H., and PEPLOW, M. E. July 6, 1959 [April 14, 1958], No. 11771/58. Class 40(1). The output of a thermocouple is compensated for variations in temperature at the cold junction by locating this junction in an enclosure together with a resistance network incorporating temperature-sensitive resistors, the network being adjusted to produce a compensating signal which is added to the thermocouple signal to provide a correct indication of temperature. As shown, two thermocouples 12, 13 connected in series have their cold junctions in an enclosure 11 located near to the point whose temperature is to be measured, together with temperaturesensitive resistors 14, 15, e.g. of nickel, associated with other resistors 16-22 which have a low temperature coefficient. Resistors 15, 16+ 17, 19 and 20 form a bridge network, with resistor 14 shunted across 15 and 16, balanceable by potentiometer 18, and energized by a batten 23 through resistors 21, 22. Resistor 21 and potentiometer 18 are adjusted empirically to produce a bridge output signal which is added to the thermocouple output to compensate for variations in temperature in enclosure 11. The enclosure 11 may be of copper, filled with an epoxy resin, and thermally insulated externally.
GB1177158A 1958-04-14 1958-04-14 Improvements in or relating to thermocouple systems Expired GB867402A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1177158A GB867402A (en) 1958-04-14 1958-04-14 Improvements in or relating to thermocouple systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1177158A GB867402A (en) 1958-04-14 1958-04-14 Improvements in or relating to thermocouple systems

Publications (1)

Publication Number Publication Date
GB867402A true GB867402A (en) 1961-05-10

Family

ID=9992409

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1177158A Expired GB867402A (en) 1958-04-14 1958-04-14 Improvements in or relating to thermocouple systems

Country Status (1)

Country Link
GB (1) GB867402A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1498713A1 (en) * 2003-07-17 2005-01-19 Siemens Aktiengesellschaft Method for temperature measuring and a device for carrying out the method
CN113267265A (en) * 2021-05-21 2021-08-17 中国联合重型燃气轮机技术有限公司 Gas turbine gas temperature measurement system, gas turbine, and temperature measurement method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1498713A1 (en) * 2003-07-17 2005-01-19 Siemens Aktiengesellschaft Method for temperature measuring and a device for carrying out the method
CN113267265A (en) * 2021-05-21 2021-08-17 中国联合重型燃气轮机技术有限公司 Gas turbine gas temperature measurement system, gas turbine, and temperature measurement method

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