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JPH0227522U - - Google Patents

Info

Publication number
JPH0227522U
JPH0227522U JP10140688U JP10140688U JPH0227522U JP H0227522 U JPH0227522 U JP H0227522U JP 10140688 U JP10140688 U JP 10140688U JP 10140688 U JP10140688 U JP 10140688U JP H0227522 U JPH0227522 U JP H0227522U
Authority
JP
Japan
Prior art keywords
electrodes
applying
pair
voltage
water level
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
Application number
JP10140688U
Other languages
Japanese (ja)
Other versions
JP2552881Y2 (en
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 filed Critical
Priority to JP1988101406U priority Critical patent/JP2552881Y2/en
Publication of JPH0227522U publication Critical patent/JPH0227522U/ja
Application granted granted Critical
Publication of JP2552881Y2 publication Critical patent/JP2552881Y2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１〜３図は本考案の一実施例としての水位検
出装置を示すもので、第１図はその模式的回路図
、第２図はそのフローチヤート、第３図はその印
加電圧波形図であり、第４〜６図は従来の水位検
出装置を示すもので、第４図はその原理図、第５
図はその回路図、第６図はその印加電圧波形図で
ある。 １，２……電極、３……ウオーターレベルセン
サ、４……コントロールユニツト、５……警報ラ
ンプ、６……負荷抵抗。 Figures 1 to 3 show a water level detection device as an embodiment of the present invention. Figure 1 is its schematic circuit diagram, Figure 2 is its flowchart, and Figure 3 is its applied voltage waveform diagram. Yes, Figures 4 to 6 show the conventional water level detection device, Figure 4 is its principle diagram, and Figure 5
The figure is its circuit diagram, and FIG. 6 is its applied voltage waveform diagram. 1, 2... Electrode, 3... Water level sensor, 4... Control unit, 5... Warning lamp, 6... Load resistance.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 水中で導通しうる一対の電極をそなえたウオー
ターレベルセンサと、上記一対の電極へ常時は第
１の時間間隔で交流電圧を印加する電圧印加手段
と、この電圧印加手段による上記一対の電極への
電圧印加に伴い同一対の電極間の水中での導通を
検知する導通検知手段と、上記導通検知手段から
の検知信号が途絶えた際に上記電圧印加手段に上
記第１の時間間隔よりも短い第２の時間間隔で上
記一対の電極へ交流電圧を印加させる制御手段と
、上記第２の時間間隔での交流電圧印加に際して
も上記導通検知手段からの検知信号が途絶えたま
まの場合に警報を発生する警報手段とで構成され
たことを特徴とする、水位検出装置。 a water level sensor comprising a pair of electrodes that can be electrically conductive underwater; a voltage applying means for always applying an alternating current voltage to the pair of electrodes at a first time interval; continuity detection means for detecting continuity between the same pair of electrodes in water as a voltage is applied; control means for applying an alternating current voltage to the pair of electrodes at a second time interval; and generating an alarm if the detection signal from the continuity detection means remains interrupted even when applying the alternating voltage at the second time interval. 1. A water level detection device comprising: a warning means for detecting a water level;
JP1988101406U 1988-07-30 1988-07-30 Water level detector Expired - Fee Related JP2552881Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1988101406U JP2552881Y2 (en) 1988-07-30 1988-07-30 Water level detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1988101406U JP2552881Y2 (en) 1988-07-30 1988-07-30 Water level detector

Publications (2)

Publication Number Publication Date
JPH0227522U true JPH0227522U (en) 1990-02-22
JP2552881Y2 JP2552881Y2 (en) 1997-10-29

Family

ID=31330369

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1988101406U Expired - Fee Related JP2552881Y2 (en) 1988-07-30 1988-07-30 Water level detector

Country Status (1)

Country Link
JP (1) JP2552881Y2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011247806A (en) * 2010-05-28 2011-12-08 Aisin Seiki Co Ltd Level detection device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5713596A (en) * 1980-06-27 1982-01-23 Nippon Electric Co Independent start-type radio telemeter transmitter
JPS57182620A (en) * 1981-05-06 1982-11-10 Matsushita Electric Ind Co Ltd Water detecting circuit
JPS57211694A (en) * 1981-06-23 1982-12-25 Tokyo Shibaura Electric Co Cyclic digital telemeter unit
JPS58139023A (en) * 1982-02-13 1983-08-18 Zojirushi Vacuum Bottle Co Device for displaying liquid amount of container
JPS619798A (en) * 1984-06-23 1986-01-17 日本無線株式会社 Automatic transmission type observer
JPS62185124A (en) * 1986-02-10 1987-08-13 Konishiroku Photo Ind Co Ltd Liquid surface detection circuit with inhibited surface contamination

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5713596A (en) * 1980-06-27 1982-01-23 Nippon Electric Co Independent start-type radio telemeter transmitter
JPS57182620A (en) * 1981-05-06 1982-11-10 Matsushita Electric Ind Co Ltd Water detecting circuit
JPS57211694A (en) * 1981-06-23 1982-12-25 Tokyo Shibaura Electric Co Cyclic digital telemeter unit
JPS58139023A (en) * 1982-02-13 1983-08-18 Zojirushi Vacuum Bottle Co Device for displaying liquid amount of container
JPS619798A (en) * 1984-06-23 1986-01-17 日本無線株式会社 Automatic transmission type observer
JPS62185124A (en) * 1986-02-10 1987-08-13 Konishiroku Photo Ind Co Ltd Liquid surface detection circuit with inhibited surface contamination

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011247806A (en) * 2010-05-28 2011-12-08 Aisin Seiki Co Ltd Level detection device

Also Published As

Publication number Publication date
JP2552881Y2 (en) 1997-10-29

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees