GB1003322A - Improvements in or relating to radiation pyrometers - Google Patents

Improvements in or relating to radiation pyrometers

Info

Publication number
GB1003322A
GB1003322A GB1323462A GB1323462A GB1003322A GB 1003322 A GB1003322 A GB 1003322A GB 1323462 A GB1323462 A GB 1323462A GB 1323462 A GB1323462 A GB 1323462A GB 1003322 A GB1003322 A GB 1003322A
Authority
GB
United Kingdom
Prior art keywords
resistor
thermopile
thermistor
temperature
resistance
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
GB1323462A
Inventor
Thomas Land
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.)
Land Pyrometers Ltd
Original Assignee
Land Pyrometers 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 Land Pyrometers Ltd filed Critical Land Pyrometers Ltd
Priority to GB1323462A priority Critical patent/GB1003322A/en
Publication of GB1003322A publication Critical patent/GB1003322A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
    • G01J5/10—Radiation pyrometry, e.g. infrared or optical thermometry using electric radiation detectors
    • G01J5/12—Radiation pyrometry, e.g. infrared or optical thermometry using electric radiation detectors using thermoelectric elements, e.g. thermocouples

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Radiation Pyrometers (AREA)

Abstract

1,003,322. Radiation pyrometers. LAND PYROMETERS Ltd. May 30 1963 [April 6,1962], No.13234/62. Heading G1A. Zero drift due to temperature variations of a pyrometer head A are compensated by connecting in series with the pyrometer thermopile 2a thermistor 4, and a metallic resistor, 5, the resistance of the thermistor at 20‹C. being from 10 to 15 times that of resistor 5. Radiation from the source being investigated is focussed on the thermopile 2 which is shunted by a nickel resistor to compensate for changes in cold function temperature. The resistance values of thermistor 4 and resistance 5 are so chosen that the change in potential drop across the combination with temperature exactly balances the change in e.m.f. produced by the thermopile. The head output is connected by copper leads 1 to a bridge circuit B including a self balancing potentiometer 7, 8 the motor 9 of which driving a temperature recorder. Correction for non- unity emissivity of the source is effected by resistor R 5 . In a modified circuit, Fig. 2 (not shown) the potential divider R 7 R 8 is eliminated.
GB1323462A 1962-04-06 1962-04-06 Improvements in or relating to radiation pyrometers Expired GB1003322A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1323462A GB1003322A (en) 1962-04-06 1962-04-06 Improvements in or relating to radiation pyrometers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1323462A GB1003322A (en) 1962-04-06 1962-04-06 Improvements in or relating to radiation pyrometers

Publications (1)

Publication Number Publication Date
GB1003322A true GB1003322A (en) 1965-09-02

Family

ID=10019278

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1323462A Expired GB1003322A (en) 1962-04-06 1962-04-06 Improvements in or relating to radiation pyrometers

Country Status (1)

Country Link
GB (1) GB1003322A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117824771A (en) * 2024-03-06 2024-04-05 成都睿宝电子科技有限公司 Automatic temperature compensation circuit and compensation method for thermal flowmeter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117824771A (en) * 2024-03-06 2024-04-05 成都睿宝电子科技有限公司 Automatic temperature compensation circuit and compensation method for thermal flowmeter
CN117824771B (en) * 2024-03-06 2024-06-04 成都睿宝电子科技有限公司 Automatic temperature compensation circuit and compensation method for thermal flowmeter

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