JPS57160017A - Liquid-level detection system - Google Patents

Liquid-level detection system

Info

Publication number
JPS57160017A
JPS57160017A JP56045048A JP4504881A JPS57160017A JP S57160017 A JPS57160017 A JP S57160017A JP 56045048 A JP56045048 A JP 56045048A JP 4504881 A JP4504881 A JP 4504881A JP S57160017 A JPS57160017 A JP S57160017A
Authority
JP
Japan
Prior art keywords
liquid
ultrasonic transducer
reflecting plate
signal
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.)
Pending
Application number
JP56045048A
Other languages
Japanese (ja)
Inventor
Takahisa Sato
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP56045048A priority Critical patent/JPS57160017A/en
Publication of JPS57160017A publication Critical patent/JPS57160017A/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

Abstract

PURPOSE:To perform the highly reliable detection of a liquid-level by arranging an ultrasonic transducer and a reflecting plate inside of a measuring container to detect echo time. CONSTITUTION:A liquid 3 is accomodated by a measuring container. The space on the liquid 3 is filled with a gas 2. An ultrasonic transducer 5 and a reflecting plate 6 are attached to a supporting frame 4 at a fixed interval. A timing control unit 11 is actuated to change over a switch 20 to the oscillation side while the transmitting unit 12 is started. From the ultrasonic transducer 5 an ultrasonic pulse is emitted, and an echo reflected from the reflecting plate 6 is detected by the ultrasonic transducer 5. Said signal is put in through the switch 20 changed over by the signal from the timing control unit 11 to the reception signal decision unit 13 and the time is measured until the echo signal reaches the fixed threshold value to permit a decision as to whether or not the liquid is on the measured level. As the direct measuring method is applied, the highly reliable liquid-level detection is performed.
JP56045048A 1981-03-27 1981-03-27 Liquid-level detection system Pending JPS57160017A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56045048A JPS57160017A (en) 1981-03-27 1981-03-27 Liquid-level detection system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56045048A JPS57160017A (en) 1981-03-27 1981-03-27 Liquid-level detection system

Publications (1)

Publication Number Publication Date
JPS57160017A true JPS57160017A (en) 1982-10-02

Family

ID=12708474

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56045048A Pending JPS57160017A (en) 1981-03-27 1981-03-27 Liquid-level detection system

Country Status (1)

Country Link
JP (1) JPS57160017A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04120476U (en) * 1991-04-11 1992-10-28 宰一 林 Rubber tube for securing floats

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04120476U (en) * 1991-04-11 1992-10-28 宰一 林 Rubber tube for securing floats

Similar Documents

Publication Publication Date Title
RU98100234A (en) LEVEL TRANSMITTER
CA2142740C (en) Arrangement for measuring the level of contents in a container
JPS6468627A (en) Acoustic high temperature measuring apparatus and method
CA2187844A1 (en) Device for Monitoring a Predetermined Level of a Liquid in a Container
JPS5750653A (en) Test piece for ultrasonic flaw detection
GB1377054A (en) Vehicle fuel level indicating systems
GB1092531A (en) Liquid presence detector
JPS57160017A (en) Liquid-level detection system
GB2126342A (en) Liquid level detector
US4186371A (en) Echo sounders
ES484972A1 (en) Means for detecting liquid levels in a container
JPS57199918A (en) Liquid level detector
GB2225113A (en) "State of fill-determining apparatus using a sonic pulse transducer and an additional sensor"
GB2017915A (en) Liquid level indicators
JPS56153268A (en) Distance measuring device
JPS573041A (en) Ultrasonic flaw detector
JPS5661619A (en) Ultrasonic level gauge
JPS57175442A (en) Obstacle indicator for vehicle
JPS5847218A (en) Measurement of tank content capacity
JPS577519A (en) Liquid level gauge
JPS57124211A (en) Ultrasonic measuring device
JPS54108599A (en) Detecting method for kind of vehicle using microprocessor
JPH069330Y2 (en) Liquid container water level detector
JPH0323360U (en)
JPS574568A (en) Device for detecting obstacle for automobile