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)
Japanese (ja)
Other versions
JPH0338656Y2 (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
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)
  • Electromechanical Clocks (AREA)
  • Golf Clubs (AREA)
  • Manufacturing Of Printed Circuit Boards (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
JP1990105302U 1983-12-23 1990-10-08 Expired JPH0338656Y2 (en])

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 (en]) 1991-06-04
JPH0338656Y2 JPH0338656Y2 (en]) 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 (en]) 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 (en])
JP (2) JPS60135824A (en])
AT (1) ATE40204T1 (en])
CA (1) CA1222395A (en])
DE (1) DE3476262D1 (en])
MX (1) MX157492A (en])
ZA (1) ZA847889B (en])

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0435773Y2 (en]) * 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
DE3476262D1 (en) 1989-02-23
EP0147038A1 (en) 1985-07-03
ZA847889B (en) 1985-07-31
MX157492A (es) 1988-11-25
EP0147038B1 (en) 1989-01-18
ATE40204T1 (de) 1989-02-15
JPH0338656Y2 (en]) 1991-08-15
JPS60135824A (ja) 1985-07-19

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