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FR2405474A1 - Colour pyrometer control circuit - has outputs from signal reduction channel controlling voltage dividers and switches in measuring channels to decrease overshoot - Google Patents

Colour pyrometer control circuit - has outputs from signal reduction channel controlling voltage dividers and switches in measuring channels to decrease overshoot

Info

Publication number
FR2405474A1
FR2405474A1 FR7730099A FR7730099A FR2405474A1 FR 2405474 A1 FR2405474 A1 FR 2405474A1 FR 7730099 A FR7730099 A FR 7730099A FR 7730099 A FR7730099 A FR 7730099A FR 2405474 A1 FR2405474 A1 FR 2405474A1
Authority
FR
France
Prior art keywords
measuring channels
switches
signal reduction
reduction channel
outputs
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
FR7730099A
Other languages
French (fr)
Other versions
FR2405474B1 (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.)
EGOROV DMITRY
Original Assignee
EGOROV DMITRY
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 EGOROV DMITRY filed Critical EGOROV DMITRY
Priority to FR7730099A priority Critical patent/FR2405474A1/en
Publication of FR2405474A1 publication Critical patent/FR2405474A1/en
Application granted granted Critical
Publication of FR2405474B1 publication Critical patent/FR2405474B1/fr
Granted 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
    • G01J5/60—Radiation pyrometry, e.g. infrared or optical thermometry using determination of colour temperature

Landscapes

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

Abstract

The colour pyrometer comprises a lens (1) which forms a narrow light beam from light emitted from an object, and a beam-splitter (5) having different colour filters which directs different spectral ranges onto photodetectors (9-11). One detector (11) forms part of a signal reduction channel including a signal watching circuit (23), a voltage divider (24, 25) and an amplifier (26). Signals above a reference level set by a reference pulse source (28) are sensed by a comparator (27) whose output controls adjustable devices (25, 17) in the voltage dividers of the signal reduction channel (14) and the measuring channels (12, 13) so that the difference sensed by the comparator (27) is nulled. The output of a delay circuit (29) connected to the comparator output is connected to switches (22) in the measuring channels which are controlled so that initial transients are not transmitted to the measuring channel outputs.
FR7730099A 1977-10-06 1977-10-06 Colour pyrometer control circuit - has outputs from signal reduction channel controlling voltage dividers and switches in measuring channels to decrease overshoot Granted FR2405474A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7730099A FR2405474A1 (en) 1977-10-06 1977-10-06 Colour pyrometer control circuit - has outputs from signal reduction channel controlling voltage dividers and switches in measuring channels to decrease overshoot

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7730099A FR2405474A1 (en) 1977-10-06 1977-10-06 Colour pyrometer control circuit - has outputs from signal reduction channel controlling voltage dividers and switches in measuring channels to decrease overshoot

Publications (2)

Publication Number Publication Date
FR2405474A1 true FR2405474A1 (en) 1979-05-04
FR2405474B1 FR2405474B1 (en) 1980-08-01

Family

ID=9196178

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7730099A Granted FR2405474A1 (en) 1977-10-06 1977-10-06 Colour pyrometer control circuit - has outputs from signal reduction channel controlling voltage dividers and switches in measuring channels to decrease overshoot

Country Status (1)

Country Link
FR (1) FR2405474A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2497572A1 (en) * 1981-01-06 1982-07-09 Egorov Dmitry Colour pyrometer for temp. determination of rolled metal - has compensation channel with adjusted time constant to provide higher operating rate

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3522739A (en) * 1968-10-28 1970-08-04 Princeton Applied Res Corp Spectrophotometer apparatus utilizing a ratio measuring circuit
US3537314A (en) * 1966-04-09 1970-11-03 Dary Yakovlevich Svet Method and apparatus for measuring true or actual temperature of bodies by radiant energy
GB1265417A (en) * 1969-08-06 1972-03-01
US3795918A (en) * 1972-01-31 1974-03-05 Capintec Inc Electronic ratio instrument for remote temperature measurement

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3537314A (en) * 1966-04-09 1970-11-03 Dary Yakovlevich Svet Method and apparatus for measuring true or actual temperature of bodies by radiant energy
US3522739A (en) * 1968-10-28 1970-08-04 Princeton Applied Res Corp Spectrophotometer apparatus utilizing a ratio measuring circuit
GB1265417A (en) * 1969-08-06 1972-03-01
US3795918A (en) * 1972-01-31 1974-03-05 Capintec Inc Electronic ratio instrument for remote temperature measurement

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
EXBK/73 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2497572A1 (en) * 1981-01-06 1982-07-09 Egorov Dmitry Colour pyrometer for temp. determination of rolled metal - has compensation channel with adjusted time constant to provide higher operating rate

Also Published As

Publication number Publication date
FR2405474B1 (en) 1980-08-01

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Legal Events

Date Code Title Description
ST Notification of lapse