JPS5670416A - Switching device for detecting level of liquid - Google Patents
Switching device for detecting level of liquidInfo
- Publication number
- JPS5670416A JPS5670416A JP14799579A JP14799579A JPS5670416A JP S5670416 A JPS5670416 A JP S5670416A JP 14799579 A JP14799579 A JP 14799579A JP 14799579 A JP14799579 A JP 14799579A JP S5670416 A JPS5670416 A JP S5670416A
- Authority
- JP
- Japan
- Prior art keywords
- liquid
- electrode
- level
- turned
- time constant
- 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 increase usability and reliability of the device by giving a time constant to the action of a relay for monitoring and controlling the level of liquid in the liquid-level control and by performing the control with electrodes for detecting the level of liquid and a means of photocoupler.
CONSTITUTION: An electrode circuit is formed on the secondary side of an AC transformer Tr in such a manner that a closed loop is formed between electrode A and C and through electrode A and B out of the long electrode A, the medium electrode B and the short electrode C for detecting the level of liquid. And, when a power source is put on while the level of liquid rises and reaches the electrode B, a transistor T1 turns on and next T2 turns conductive after the time constant of a resistance R5 a capacitor C1. During this time constant, a base current flows to T3 through the intermediary of the relay RY for monitoring and controlling the level of liquid to turn T3 on, and the resistance of PC is turned small by the photocoupler of LED-PC, whereby the circuit between electrodes B and C is short- circuited, T1 is turned off, T2 and RY are turned off and T3 continues to be ON. As the result, the sounding of a hot-water alarm which is unnecessary at the time of water supply can be prevented.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14799579A JPS5916205B2 (en) | 1979-11-15 | 1979-11-15 | Liquid level detection switch device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14799579A JPS5916205B2 (en) | 1979-11-15 | 1979-11-15 | Liquid level detection switch device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5670416A true JPS5670416A (en) | 1981-06-12 |
JPS5916205B2 JPS5916205B2 (en) | 1984-04-13 |
Family
ID=15442761
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14799579A Expired JPS5916205B2 (en) | 1979-11-15 | 1979-11-15 | Liquid level detection switch device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5916205B2 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS584030U (en) * | 1981-06-30 | 1983-01-11 | 松下電工株式会社 | Liquid level display relay device |
JPS62201323A (en) * | 1986-02-28 | 1987-09-05 | Kawamoto Seisakusho:Kk | Liquid level detector |
JPH01191018A (en) * | 1988-01-26 | 1989-08-01 | Matsushita Electric Works Ltd | Liquid level detector |
WO2008074247A1 (en) * | 2006-12-20 | 2008-06-26 | Print-Rite Technology Development Co., Ltd Of Zhuhai | A detecting circuit and an ink cartridge |
CN115224458A (en) * | 2022-08-16 | 2022-10-21 | 江苏快乐电源(涟水)有限公司 | Acid injection device for lead storage battery |
-
1979
- 1979-11-15 JP JP14799579A patent/JPS5916205B2/en not_active Expired
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS584030U (en) * | 1981-06-30 | 1983-01-11 | 松下電工株式会社 | Liquid level display relay device |
JPS62201323A (en) * | 1986-02-28 | 1987-09-05 | Kawamoto Seisakusho:Kk | Liquid level detector |
JPH01191018A (en) * | 1988-01-26 | 1989-08-01 | Matsushita Electric Works Ltd | Liquid level detector |
WO2008074247A1 (en) * | 2006-12-20 | 2008-06-26 | Print-Rite Technology Development Co., Ltd Of Zhuhai | A detecting circuit and an ink cartridge |
CN115224458A (en) * | 2022-08-16 | 2022-10-21 | 江苏快乐电源(涟水)有限公司 | Acid injection device for lead storage battery |
CN115224458B (en) * | 2022-08-16 | 2023-10-13 | 江苏快乐电源(涟水)有限公司 | Acid injection device for lead storage battery |
Also Published As
Publication number | Publication date |
---|---|
JPS5916205B2 (en) | 1984-04-13 |
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