JPS57139631A - Thermocouple temperature measuring device - Google Patents

Thermocouple temperature measuring device

Info

Publication number
JPS57139631A
JPS57139631A JP2503981A JP2503981A JPS57139631A JP S57139631 A JPS57139631 A JP S57139631A JP 2503981 A JP2503981 A JP 2503981A JP 2503981 A JP2503981 A JP 2503981A JP S57139631 A JPS57139631 A JP S57139631A
Authority
JP
Japan
Prior art keywords
thermocouple
output
measurement
curve
characteristic
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
JP2503981A
Other languages
Japanese (ja)
Other versions
JPS6156930B2 (en
Inventor
Mitsuhisa Okamoto
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.)
NIHON DENSHI KAGAKU KK
Nippon Denshi Kagaku Co Ltd
Original Assignee
NIHON DENSHI KAGAKU KK
Nippon Denshi Kagaku 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 NIHON DENSHI KAGAKU KK, Nippon Denshi Kagaku Co Ltd filed Critical NIHON DENSHI KAGAKU KK
Priority to JP2503981A priority Critical patent/JPS57139631A/en
Publication of JPS57139631A publication Critical patent/JPS57139631A/en
Publication of JPS6156930B2 publication Critical patent/JPS6156930B2/ja
Granted 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
    • G01K7/14—Arrangements for modifying the output characteristic, e.g. linearising

Abstract

PURPOSE:To make it possible to conduct high-accuracy measurement by eliminating error even at the time when characteristic curve of thermocouple is non- rectilinear, by compensating thermoelectromotive pressure from the thermocouple by a compensating circui containing a coefficient device and a memory device. CONSTITUTION:Output of an operating amplifier 3, which gives thermoelectromotive pressure of a thermocouple, is put into a coefficient device 4 which, when characteristic of the thermocouple is a curve C, draws a straight line L sufficiently close to the curve and uses the inclination K as a coefficient value. And, output of the operating amplifier 3 is digitalized by a converter 5 and given to a memory device 6 as address data, and output thereof is analogized by a converter 7 and added to output of the coefficient device 4, and thus obtained figure is given as feedback voltage to the operating amplifier 3 to obtain a value of the measurement. As it is possible, by doing so, to compensate error occurring when the characteristic is non-rectilinear, measurement can be executed at high accuracy.
JP2503981A 1981-02-23 1981-02-23 Thermocouple temperature measuring device Granted JPS57139631A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2503981A JPS57139631A (en) 1981-02-23 1981-02-23 Thermocouple temperature measuring device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2503981A JPS57139631A (en) 1981-02-23 1981-02-23 Thermocouple temperature measuring device

Publications (2)

Publication Number Publication Date
JPS57139631A true JPS57139631A (en) 1982-08-28
JPS6156930B2 JPS6156930B2 (en) 1986-12-04

Family

ID=12154760

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2503981A Granted JPS57139631A (en) 1981-02-23 1981-02-23 Thermocouple temperature measuring device

Country Status (1)

Country Link
JP (1) JPS57139631A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6024697A (en) * 1983-07-20 1985-02-07 日新電機株式会社 Analog value measuring circuit
JPS60176199A (en) * 1984-02-02 1985-09-10 ハネウエル・インコーポレーテツド Digital correction method and apparatus for output of process variable sensor

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01157633U (en) * 1988-04-19 1989-10-31

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6024697A (en) * 1983-07-20 1985-02-07 日新電機株式会社 Analog value measuring circuit
JPS60176199A (en) * 1984-02-02 1985-09-10 ハネウエル・インコーポレーテツド Digital correction method and apparatus for output of process variable sensor

Also Published As

Publication number Publication date
JPS6156930B2 (en) 1986-12-04

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