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JPS573019A - Burn-out detector for resistance thermometer - Google Patents

Burn-out detector for resistance thermometer

Info

Publication number
JPS573019A
JPS573019A JP7668480A JP7668480A JPS573019A JP S573019 A JPS573019 A JP S573019A JP 7668480 A JP7668480 A JP 7668480A JP 7668480 A JP7668480 A JP 7668480A JP S573019 A JPS573019 A JP S573019A
Authority
JP
Japan
Prior art keywords
burn
operational amplifier
resistance
output
temperature measuring
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
JP7668480A
Other languages
Japanese (ja)
Other versions
JPS6143650B2 (en
Inventor
Fushiaki Haruhara
Yoshihiro Obata
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.)
Chino Corp
Original Assignee
Chino Works 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 Chino Works Ltd filed Critical Chino Works Ltd
Priority to JP7668480A priority Critical patent/JPS573019A/en
Publication of JPS573019A publication Critical patent/JPS573019A/en
Publication of JPS6143650B2 publication Critical patent/JPS6143650B2/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
    • G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)

Abstract

PURPOSE:To indicate occurrence of burn-out accurately by applying burn-out voltage to an operational amplifier for measurement when one of conductors of a three- wire temperature measuring resistance is burnt out, and making the output to a saturated state. CONSTITUTION:A temperature measuring resistance, a constant-voltage electric power supply and a resistance are connected in series, and both ends of the resistance are connected to the input terminals of an operational amplifier exclusively used for detecting burn-out. It is so made that by the action of this operational amplifier, burn-out voltage is applied to an operational amplifier for measurement at the time of burn-out and the output is saturated. For instance, a Zener diode 1 is connected in series with a resistance and a temperature measuring resistance R(t) and the output of an operational amplifier IC3 is so adjusted that it makes a field transistor T off in a normal state, and makes on to apply burn-out voltage (+)V to (-) input terminal of an operational amplifier IC2 at the time of burn-out. Thus, the output is saturated and accordingly, the occurrence of burn-out can be detected accurately.
JP7668480A 1980-06-09 1980-06-09 Burn-out detector for resistance thermometer Granted JPS573019A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7668480A JPS573019A (en) 1980-06-09 1980-06-09 Burn-out detector for resistance thermometer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7668480A JPS573019A (en) 1980-06-09 1980-06-09 Burn-out detector for resistance thermometer

Publications (2)

Publication Number Publication Date
JPS573019A true JPS573019A (en) 1982-01-08
JPS6143650B2 JPS6143650B2 (en) 1986-09-29

Family

ID=13612259

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7668480A Granted JPS573019A (en) 1980-06-09 1980-06-09 Burn-out detector for resistance thermometer

Country Status (1)

Country Link
JP (1) JPS573019A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5163754A (en) * 1989-08-08 1992-11-17 The United States Of America As Represented By The United States Department Of Energy Isolated thermocouple amplifier system for stirred fixed-bed gasifier
US11254185B2 (en) 2018-12-12 2022-02-22 Honda Motor Co., Ltd. Air-conditioning control system for vehicle, air-conditioning control method for vehicle, and recording medium

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5163754A (en) * 1989-08-08 1992-11-17 The United States Of America As Represented By The United States Department Of Energy Isolated thermocouple amplifier system for stirred fixed-bed gasifier
US11254185B2 (en) 2018-12-12 2022-02-22 Honda Motor Co., Ltd. Air-conditioning control system for vehicle, air-conditioning control method for vehicle, and recording medium

Also Published As

Publication number Publication date
JPS6143650B2 (en) 1986-09-29

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