JPS5512462A - Acoustic liquid level detection - Google Patents

Acoustic liquid level detection

Info

Publication number
JPS5512462A
JPS5512462A JP8550378A JP8550378A JPS5512462A JP S5512462 A JPS5512462 A JP S5512462A JP 8550378 A JP8550378 A JP 8550378A JP 8550378 A JP8550378 A JP 8550378A JP S5512462 A JPS5512462 A JP S5512462A
Authority
JP
Japan
Prior art keywords
converter
liquid level
pulses
liquid
level detection
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
JP8550378A
Other languages
Japanese (ja)
Inventor
Kiyoshi Asakawa
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP8550378A priority Critical patent/JPS5512462A/en
Publication of JPS5512462A publication Critical patent/JPS5512462A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To highly accurately detect the displacement of a liquid level by using acoustic means. CONSTITUTION:A surface wave transmitting and receiving converter 73 is disposed on the surface of a piezoelectric substrate 71. Thus, if R and F pulses are impressed upon the converter 73 from an electric input and output terminal 72, the surface waves oscillated are reflected on a liquid surface 74 to be detected so that the reflected waves 75 are received by the converter 73. At this time, the pulses of the reflected waves 75 have the delay time which is determined by the distance between the converter 73 and the liquid surface 74 with respect to the transmitting pulses. If this delay time is measured by an electronic circuit, the distance between the converter 73 and the liquid surface 74, i.e., the liquid level can be detected.
JP8550378A 1978-07-12 1978-07-12 Acoustic liquid level detection Pending JPS5512462A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8550378A JPS5512462A (en) 1978-07-12 1978-07-12 Acoustic liquid level detection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8550378A JPS5512462A (en) 1978-07-12 1978-07-12 Acoustic liquid level detection

Publications (1)

Publication Number Publication Date
JPS5512462A true JPS5512462A (en) 1980-01-29

Family

ID=13860727

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8550378A Pending JPS5512462A (en) 1978-07-12 1978-07-12 Acoustic liquid level detection

Country Status (1)

Country Link
JP (1) JPS5512462A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5788327A (en) * 1980-11-19 1982-06-02 Besutoooberu Moburii Ltd Liquid level detector
JPH01215305A (en) * 1988-02-22 1989-08-29 Mitsubishi Gas Chem Co Inc Automatic distillation testing devide for chemical product or the like
JPH02633U (en) * 1988-06-15 1990-01-05

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5788327A (en) * 1980-11-19 1982-06-02 Besutoooberu Moburii Ltd Liquid level detector
JPH01215305A (en) * 1988-02-22 1989-08-29 Mitsubishi Gas Chem Co Inc Automatic distillation testing devide for chemical product or the like
JPH02633U (en) * 1988-06-15 1990-01-05
JPH0429382Y2 (en) * 1988-06-15 1992-07-16

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