JPS57122320A - Liquid level detector - Google Patents

Liquid level detector

Info

Publication number
JPS57122320A
JPS57122320A JP873881A JP873881A JPS57122320A JP S57122320 A JPS57122320 A JP S57122320A JP 873881 A JP873881 A JP 873881A JP 873881 A JP873881 A JP 873881A JP S57122320 A JPS57122320 A JP S57122320A
Authority
JP
Japan
Prior art keywords
light receiving
light
insulator
luminous
reflecting surface
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
Application number
JP873881A
Other languages
Japanese (ja)
Inventor
Kazuo Aoki
Takashi Kamiyama
Masami Tadenuma
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tokyo Sanyo Electric Co Ltd
Sanyo Electric Co Ltd
Sanyo Denki Co Ltd
Original Assignee
Tokyo Sanyo Electric Co Ltd
Sanyo Electric Co Ltd
Sanyo Denki Co Ltd
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 by Tokyo Sanyo Electric Co Ltd, Sanyo Electric Co Ltd, Sanyo Denki Co Ltd filed Critical Tokyo Sanyo Electric Co Ltd
Priority to JP873881A priority Critical patent/JPS57122320A/en
Publication of JPS57122320A publication Critical patent/JPS57122320A/en
Pending 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

Abstract

PURPOSE:To eliminate erroneous movement of an float, and make it small in size and give it high reliance by forming a prismatic reflection surface that reflects light from a luminous body to the light receiving body on the outer face of an insulator that is positioned opposite to the luminous body and the light receiving body. CONSTITUTION:A prismatic reflecting surface 4 of conical shape or triangular column shape is formed on the outer face of an insulator 2 that is opposite to a luminiscent body 3a' and a light receiving body 3b' to reflect the light from the luminous body 3a' to the light receiving body 3b' when the fuel 7 is not existing. The tip of a pair of sensitive electrodes 6 embedded in the insulator 2 is positioned beneath the reflecting surface 4 in order to sense water mixed in a fuel tank 1. When the level of the fuel 7 goes down to expose the reflecting surface 4, the light from a luminous element 3a is reflected on the surface 4 and reaches a light receiving element 3b to actuate an indication control circuit, informing emptiness of the fuel tank 1 by lighting an indication element such as LED, etc.
JP873881A 1981-01-22 1981-01-22 Liquid level detector Pending JPS57122320A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP873881A JPS57122320A (en) 1981-01-22 1981-01-22 Liquid level detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP873881A JPS57122320A (en) 1981-01-22 1981-01-22 Liquid level detector

Publications (1)

Publication Number Publication Date
JPS57122320A true JPS57122320A (en) 1982-07-30

Family

ID=11701283

Family Applications (1)

Application Number Title Priority Date Filing Date
JP873881A Pending JPS57122320A (en) 1981-01-22 1981-01-22 Liquid level detector

Country Status (1)

Country Link
JP (1) JPS57122320A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59115319U (en) * 1983-01-25 1984-08-03 錘興電器株式会社 Liquid level detection element
JPS6053024U (en) * 1983-09-21 1985-04-13 新日本無線株式会社 Liquid level indicator
JPH0230019U (en) * 1988-08-18 1990-02-26
JPH02131628U (en) * 1989-04-05 1990-11-01
JPH0313828A (en) * 1989-06-05 1991-01-22 Casco Prod Corp Level measuring device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59115319U (en) * 1983-01-25 1984-08-03 錘興電器株式会社 Liquid level detection element
JPS6053024U (en) * 1983-09-21 1985-04-13 新日本無線株式会社 Liquid level indicator
JPH0230019U (en) * 1988-08-18 1990-02-26
JPH02131628U (en) * 1989-04-05 1990-11-01
JPH0313828A (en) * 1989-06-05 1991-01-22 Casco Prod Corp Level measuring device

Similar Documents

Publication Publication Date Title
EP0121848B1 (en) Apparatus for detecting bubbles in a liquid
US4445238A (en) Swimming pool water level control apparatus
ES243641U (en) Liquid level indicator. (Machine-translation by Google Translate, not legally binding)
CA2100603A1 (en) Liquid level monitor
EP0345727A3 (en) Illuminated indicator gauge
JPS57122320A (en) Liquid level detector
GB1473012A (en) Refractometer for measuring the refractive index of a liquid
US3054291A (en) Illuminated liquid gauge
ES481062A1 (en) Liquid level detector.
JPS5789725A (en) Display device
JPS57178949A (en) Monitoring device of car head lamp
EP0039187B1 (en) Liquid level indicator
JPS5635022A (en) Optical fiber liquid level indicator
IT8221495V0 (en) ELECTRIC SIGNAL TRANSMITTER DEVICE INDICATIVE OF THE LEVEL OF THE LIQUID IN TANK FUEL TANKS.
JPS56118623A (en) Detecting method for transparent substance
JPS55129730A (en) Measurement unit for fluid refractive index
GB1114965A (en) Electric pressing iron water level gauge
GB977900A (en) Improvements in liquid-level gauges
JPS57122349A (en) Liquid recognizing sensor
JPS54158266A (en) Liquid level detector
GB1146752A (en) Improvements relating to liquid meters
JPS57203914A (en) Photo-electric displacement meter
JPS5774620A (en) Liquid surface level detector
JPS608696Y2 (en) electric float
JPS57163849A (en) Optical bubble detector