JPS55117932A - Thermocouple disconnection detection unit - Google Patents

Thermocouple disconnection detection unit

Info

Publication number
JPS55117932A
JPS55117932A JP2566279A JP2566279A JPS55117932A JP S55117932 A JPS55117932 A JP S55117932A JP 2566279 A JP2566279 A JP 2566279A JP 2566279 A JP2566279 A JP 2566279A JP S55117932 A JPS55117932 A JP S55117932A
Authority
JP
Japan
Prior art keywords
disconnection
processing part
terminal
thermocouple
disconnection detection
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.)
Pending
Application number
JP2566279A
Other languages
Japanese (ja)
Inventor
Takahisa Sato
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP2566279A priority Critical patent/JPS55117932A/en
Publication of JPS55117932A publication Critical patent/JPS55117932A/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To make it possible to detect disconnection logically without error at a high speed by switching elements, a switching control part, and a disconnection detection signal processing part.
CONSTITUTION: If thermocouple 1 and compensation conductor 2 are not disconnected when switching elements 34A and 34B are turned off, the circuit of terminal t2→compensation conductor 2→thermocouple 1→compensation conductor 2→terminal t2'→contact S2 of switching element 34B→disconnection detection signal processing part 35 is constituted for the disconnection detecting applied power supply, and the disconnection detecting applied power is applied to terminal t4 of data processing part 31 through diode D of disconnection detection signal processing part 35. If the thermocouple and the compensation conductor side are disconnected, the disconnection detecting applied power is not applied to terminal t4 of data processing part 31. Consequently, disconnection test mode signal 100 is transmitted to switching control part 34 by data processing part 31, and the logical signal applied to terminal t4 is inputted, so that it can be decided whether they are disconnected or not.
COPYRIGHT: (C)1980,JPO&Japio
JP2566279A 1979-03-07 1979-03-07 Thermocouple disconnection detection unit Pending JPS55117932A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2566279A JPS55117932A (en) 1979-03-07 1979-03-07 Thermocouple disconnection detection unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2566279A JPS55117932A (en) 1979-03-07 1979-03-07 Thermocouple disconnection detection unit

Publications (1)

Publication Number Publication Date
JPS55117932A true JPS55117932A (en) 1980-09-10

Family

ID=12172004

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2566279A Pending JPS55117932A (en) 1979-03-07 1979-03-07 Thermocouple disconnection detection unit

Country Status (1)

Country Link
JP (1) JPS55117932A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0358740U (en) * 1989-10-03 1991-06-07

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4884672A (en) * 1972-02-09 1973-11-10
JPS5280189A (en) * 1975-12-26 1977-07-05 Toshiba Corp Thermocouple disconnection detector

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4884672A (en) * 1972-02-09 1973-11-10
JPS5280189A (en) * 1975-12-26 1977-07-05 Toshiba Corp Thermocouple disconnection detector

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0358740U (en) * 1989-10-03 1991-06-07

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