JPH0357633U - - Google Patents

Info

Publication number
JPH0357633U
JPH0357633U JP1990105302U JP10530290U JPH0357633U JP H0357633 U JPH0357633 U JP H0357633U JP 1990105302 U JP1990105302 U JP 1990105302U JP 10530290 U JP10530290 U JP 10530290U JP H0357633 U JPH0357633 U JP H0357633U
Authority
JP
Japan
Prior art keywords
failure
detection
detection circuit
abnormality
circuit
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
JP1990105302U
Other languages
English (en)
Other versions
JPH0338656Y2 (ja
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
Publication of JPH0357633U publication Critical patent/JPH0357633U/ja
Application granted granted Critical
Publication of JPH0338656Y2 publication Critical patent/JPH0338656Y2/ja
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
    • G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
    • G01F23/284—Electromagnetic waves
    • G01F23/292—Light, e.g. infrared or ultraviolet
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/02—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by gauge glasses or other apparatus involving a window or transparent tube for directly observing the level to be measured or the level of a liquid column in free communication with the main body of the liquid

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Thermal Sciences (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
  • Level Indicators Using A Float (AREA)
  • Golf Clubs (AREA)
  • Electromechanical Clocks (AREA)
  • Manufacturing Of Printed Circuit Boards (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Description

【図面の簡単な説明】
第１図は本考案の一実施例を示す近接スイツチ
の概略的斜視構成図、第２図は同上近接スイツチ
のブロツク構成図、第３図は従来技術による近接
スイツチの概略的斜視構成図、第４図は近接スイ
ツチの検出回路の構成例を示すブロツク構成図、
第５図は近接スイツチの検出回路の別の構成例を
示すブロツク構成図である。 １……近接スイツチ、２……第１の検出回路、
３……第２の検出回路、４……ケース、５……故
障検知回路、６……切換回路。

Claims (1)

    【実用新案登録請求の範囲】
  1. 物体の有無の検出や位置センサなどに用いられ
    る近接スイツチであつて、夫々個別に作動される
    複数の検出回路を同一のケース内に備えると共に
    、上記複数の検出回路のうち作動中の検出回路の
    異常や故障を検知し故障検知信号を発信する故障
    検知回路と、上記故障検知回路からの故障検知信
    号に基づいて上記作動中の検出回路から正常な検
    出回路へ検出回路を切り換える切換回路とを備え
    、検出動作を行なつていた検出回路の異常や故障
    が上記故障検知回路によつて検知された時には、
    上記切換回路によつて異常や故障が発生した検出
    回路から正常な検出回路に順次検出回路が切り換
    わり、全ての検出回路に異常や故障が発生するま
    で、順次正常な検出回路によつて検出動作が継続
    されるように構成したことを特徴とする近接スイ
    ツチ。
JP1990105302U 1983-12-23 1990-10-08 Expired JPH0338656Y2 (ja)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US56494183A 1983-12-23 1983-12-23

Publications (2)

Publication Number Publication Date
JPH0357633U true JPH0357633U (ja) 1991-06-04
JPH0338656Y2 JPH0338656Y2 (ja) 1991-08-15

Family

ID=24256530

Family Applications (2)

Application Number Title Priority Date Filing Date
JP59210630A Pending JPS60135824A (ja) 1983-12-23 1984-10-09 光伝送型レベル指示装置
JP1990105302U Expired JPH0338656Y2 (ja) 1983-12-23 1990-10-08

Family Applications Before (1)

Application Number Title Priority Date Filing Date
JP59210630A Pending JPS60135824A (ja) 1983-12-23 1984-10-09 光伝送型レベル指示装置

Country Status (7)

Country Link
EP (1) EP0147038B1 (ja)
JP (2) JPS60135824A (ja)
AT (1) ATE40204T1 (ja)
CA (1) CA1222395A (ja)
DE (1) DE3476262D1 (ja)
MX (1) MX157492A (ja)
ZA (1) ZA847889B (ja)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0435773Y2 (ja) * 1987-11-13 1992-08-25
ES2555327B1 (es) * 2013-04-30 2016-11-16 Acciona Agua, S.A. Dispositivo de control del nivel de lodos en decantadores de lamelas

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3713338A (en) * 1971-01-18 1973-01-30 Gen Motors Corp Fiber optic liquid level indicator
DE2920199A1 (de) * 1978-05-31 1979-12-06 Eaton Sa Monaco Fluessigkeitsniveau-anzeigevorrichtung
US4217778A (en) * 1978-10-23 1980-08-19 The Babcock & Wilcox Company Liquid level gauge illuminating system
US4387594A (en) * 1981-03-23 1983-06-14 The Babcock & Wilcox Company Water level indicator having a remote and a local readout display

Also Published As

Publication number Publication date
CA1222395A (en) 1987-06-02
ZA847889B (en) 1985-07-31
MX157492A (es) 1988-11-25
ATE40204T1 (de) 1989-02-15
JPH0338656Y2 (ja) 1991-08-15
EP0147038B1 (en) 1989-01-18
JPS60135824A (ja) 1985-07-19
DE3476262D1 (en) 1989-02-23
EP0147038A1 (en) 1985-07-03

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