JPS55110919A - Liquid depth measuring device - Google Patents

Liquid depth measuring device

Info

Publication number
JPS55110919A
JPS55110919A JP1780779A JP1780779A JPS55110919A JP S55110919 A JPS55110919 A JP S55110919A JP 1780779 A JP1780779 A JP 1780779A JP 1780779 A JP1780779 A JP 1780779A JP S55110919 A JPS55110919 A JP S55110919A
Authority
JP
Grant status
Application
Patent type
Prior art keywords
capacitor
circuit
signal
liquid
conductor
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
JP1780779A
Inventor
Keizo Endo
Original Assignee
Tokyo Tatsuno 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

Links

Abstract

PURPOSE: To obtain precise value at any time, by amplifying signal from capacitor to be used for liquid depth detection and signal from capacitor with unit length to be used as reference alternately at the same amplification circuit by means of change-over circuit while making arithmetic operation by comparing both output values.
CONSTITUTION: In liquid tank 1, liquid of depth H is contained. Inside the tank, capacitor 3 for liquid depth detection, furnished with tublar electrode 6 which is extended from near bottom part to the upper edge of the tank and cylindrical electrode 5, and close to bottom part, capacitor 4 in unit length to be used as reference and furnished with tubular electrode 8 and cylindrical electrode 7, is provided. Conductor 9, 10 from capicitor 3, 4 are connected to change-over circuit 11 and transmits signal either from conductor 9 or conductor 10 to amplification circuit 13 and turn over switching is controlled by timing circuit 12. After being amplified 13, signal is memorized in memory circuit 15 temporarily and later is sent to arithmetic operation circuit 16 which works for getting ratio between signals from both capacitor 3, 4 being input at the same time, and sends it to indicator 17 intermittently.
COPYRIGHT: (C)1980,JPO&Japio
JP1780779A 1979-02-20 1979-02-20 Liquid depth measuring device Pending JPS55110919A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1780779A JPS55110919A (en) 1979-02-20 1979-02-20 Liquid depth measuring device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1780779A JPS55110919A (en) 1979-02-20 1979-02-20 Liquid depth measuring device

Publications (1)

Publication Number Publication Date
JPS55110919A true true JPS55110919A (en) 1980-08-27

Family

ID=11953992

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1780779A Pending JPS55110919A (en) 1979-02-20 1979-02-20 Liquid depth measuring device

Country Status (1)

Country Link
JP (1) JPS55110919A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57106851A (en) * 1980-11-06 1982-07-02 Vdo Schindling Apparatus for measuring capacity filling degree
JPS57171535U (en) * 1981-04-23 1982-10-28
JPS58186016A (en) * 1982-04-26 1983-10-29 Tokyo Tatsuno Co Ltd Electrostatic capacity type liquid quantity measuring device
US6250152B1 (en) * 1995-03-29 2001-06-26 Daimlerchrysler Ag Sensor arrangement
JP2012163508A (en) * 2011-02-09 2012-08-30 Mitsubishi Electric Corp Fuel detection apparatus

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57106851A (en) * 1980-11-06 1982-07-02 Vdo Schindling Apparatus for measuring capacity filling degree
JPH0256616B2 (en) * 1980-11-06 1990-11-30 Fuao Dee Oo Aadorufu Shintoringu Ag
JPS57171535U (en) * 1981-04-23 1982-10-28
JPS58186016A (en) * 1982-04-26 1983-10-29 Tokyo Tatsuno Co Ltd Electrostatic capacity type liquid quantity measuring device
US6250152B1 (en) * 1995-03-29 2001-06-26 Daimlerchrysler Ag Sensor arrangement
JP2012163508A (en) * 2011-02-09 2012-08-30 Mitsubishi Electric Corp Fuel detection apparatus

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