JPS6468623A - Induction type liquid level detector - Google Patents
Induction type liquid level detectorInfo
- Publication number
- JPS6468623A JPS6468623A JP62225520A JP22552087A JPS6468623A JP S6468623 A JPS6468623 A JP S6468623A JP 62225520 A JP62225520 A JP 62225520A JP 22552087 A JP22552087 A JP 22552087A JP S6468623 A JPS6468623 A JP S6468623A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- test
- coil
- rss
- terminal
- 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
Links
Landscapes
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
PURPOSE:To accurately test components through easy operation by providing relay switches between a primary coil and a sending circuit, and an secondary coil and a comparing circuit, and also providing operation testing circuit to the primary and secondary coils, comparing circuit, and sending circuit respectively. CONSTITUTION:The relay switches RS16 and RS17 turn on with a test switch 21 on, and the comparing circuit 8 is switched to a terminal 20; and the induction type liquid level detecting device outputs a signal indicating that a test is in process from an interlock terminal 27 and there are input signals to AND circuits 24 and 25 as well. With a switch 22 on, RSs 13-15, and 11 and 12 are turned on through the AND circuits 24 and 25. An RS 13 is turned off and the coil 3 is disconnected from the sensing circuit; and the coil 4 is switched to test terminals 28 and 29 by RSs 11 and 12 and the output of the sending circuit 6 is applied as a test voltage to an arithmetic circuit 8 through resistances 31 and 32 an amplifiers 7a and 7b by turning on the RSs 14 and 15, so that the operation is confirmed as a terminal 20. A voltage induced across the secondary coil 4 is also confirmed at terminals 28 and 29 by using the switches 21 and 23.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62225520A JP2670053B2 (en) | 1987-09-09 | 1987-09-09 | Induction type liquid level detector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62225520A JP2670053B2 (en) | 1987-09-09 | 1987-09-09 | Induction type liquid level detector |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6468623A true JPS6468623A (en) | 1989-03-14 |
JP2670053B2 JP2670053B2 (en) | 1997-10-29 |
Family
ID=16830596
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62225520A Expired - Lifetime JP2670053B2 (en) | 1987-09-09 | 1987-09-09 | Induction type liquid level detector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2670053B2 (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5863818A (en) * | 1981-10-13 | 1983-04-15 | Toshiba Corp | Induction type fixed liquid level indicator |
JPS58191929A (en) * | 1982-05-04 | 1983-11-09 | Toshiba Corp | Induction type level gauge |
JPS62116271A (en) * | 1985-11-15 | 1987-05-27 | Fujitsu Ltd | Test circuit |
-
1987
- 1987-09-09 JP JP62225520A patent/JP2670053B2/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5863818A (en) * | 1981-10-13 | 1983-04-15 | Toshiba Corp | Induction type fixed liquid level indicator |
JPS58191929A (en) * | 1982-05-04 | 1983-11-09 | Toshiba Corp | Induction type level gauge |
JPS62116271A (en) * | 1985-11-15 | 1987-05-27 | Fujitsu Ltd | Test circuit |
Also Published As
Publication number | Publication date |
---|---|
JP2670053B2 (en) | 1997-10-29 |
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Legal Events
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EXPY | Cancellation because of completion of term | ||
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