JPS6454221A - Liquid level detector - Google Patents
Liquid level detectorInfo
- Publication number
- JPS6454221A JPS6454221A JP21194387A JP21194387A JPS6454221A JP S6454221 A JPS6454221 A JP S6454221A JP 21194387 A JP21194387 A JP 21194387A JP 21194387 A JP21194387 A JP 21194387A JP S6454221 A JPS6454221 A JP S6454221A
- Authority
- JP
- Japan
- Prior art keywords
- output electrodes
- common input
- input electrode
- liquid level
- output
- 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
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
PURPOSE:To enable detection of a different liquid level, by selecting several output electrodes, set vertically at a specified interval, sequentially one at a time, to detect continuity to a common input electrode set therebelow. CONSTITUTION:When a liquid is at a height between output electrodes T2 and T2, the output electrodes T1 and T2 submerge in the liquid while output electrodes T3 and T4 are located in the air. When a switching transistor S1 is turned ON, the output electrode T1 and a common input electrode T0 conduct through resistances R1, r1 and r0 to allow detection of a rise in the potential of the common input electrode T0. Likewise, when the switching transistor S2 is turned ON, a rise in the potential of the common input electrode T0 is detected. Then, a detection circuit 4 outputs a voice signal corresponding to a set height of the highest of the output electrodes T1 and T2, namely, the output electrode T2 detected for conduction as liquid level signal from a buzzer 6.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP21194387A JPS6454221A (en) | 1987-08-25 | 1987-08-25 | Liquid level detector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP21194387A JPS6454221A (en) | 1987-08-25 | 1987-08-25 | Liquid level detector |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6454221A true JPS6454221A (en) | 1989-03-01 |
Family
ID=16614261
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP21194387A Pending JPS6454221A (en) | 1987-08-25 | 1987-08-25 | Liquid level detector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6454221A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04102432U (en) * | 1991-01-23 | 1992-09-03 | グラフテツク株式会社 | Liquid level detection device |
US5408227A (en) * | 1990-05-21 | 1995-04-18 | Nippondenso Co., Ltd. | Multiplex transmission system for vehicle |
JP2003056871A (en) * | 2001-08-10 | 2003-02-26 | Sanyo Electric Co Ltd | Humidifier |
JP2009165755A (en) * | 2008-01-18 | 2009-07-30 | Hitachi Koki Co Ltd | Dust collector |
CN110269510A (en) * | 2019-07-18 | 2019-09-24 | 陈毅强 | A kind of electric kettle with water level detecting function |
-
1987
- 1987-08-25 JP JP21194387A patent/JPS6454221A/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5408227A (en) * | 1990-05-21 | 1995-04-18 | Nippondenso Co., Ltd. | Multiplex transmission system for vehicle |
JPH04102432U (en) * | 1991-01-23 | 1992-09-03 | グラフテツク株式会社 | Liquid level detection device |
JP2003056871A (en) * | 2001-08-10 | 2003-02-26 | Sanyo Electric Co Ltd | Humidifier |
JP2009165755A (en) * | 2008-01-18 | 2009-07-30 | Hitachi Koki Co Ltd | Dust collector |
CN110269510A (en) * | 2019-07-18 | 2019-09-24 | 陈毅强 | A kind of electric kettle with water level detecting function |
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