JPS55117932A - Thermocouple disconnection detection unit - Google Patents
Thermocouple disconnection detection unitInfo
- 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
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
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0358740U (en) * | 1989-10-03 | 1991-06-07 |
Citations (2)
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 |
-
1979
- 1979-03-07 JP JP2566279A patent/JPS55117932A/en active Pending
Patent Citations (2)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0358740U (en) * | 1989-10-03 | 1991-06-07 |
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