KR920016821A - 진동식 레벨 검출장치 - Google Patents

진동식 레벨 검출장치 Download PDF

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Publication number
KR920016821A
KR920016821A KR1019920002196A KR920002196A KR920016821A KR 920016821 A KR920016821 A KR 920016821A KR 1019920002196 A KR1019920002196 A KR 1019920002196A KR 920002196 A KR920002196 A KR 920002196A KR 920016821 A KR920016821 A KR 920016821A
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South Korea
Prior art keywords
detection
detecting
fixed
vibration
vibrating
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KR1019920002196A
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English (en)
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KR960015076B1 (ko
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타카유키 우메자와
다카오 가와키타
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나가시마 히로시
노오켄 고오교오 가부시끼가이샤
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Publication of KR920016821A publication Critical patent/KR920016821A/ko
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Publication of KR960015076B1 publication Critical patent/KR960015076B1/ko

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    • 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
    • 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
    • G01F23/20—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 measurement of weight, e.g. to determine the level of stored liquefied gas
    • 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
    • G01F23/296—Acoustic waves
    • G01F23/2966—Acoustic waves making use of acoustical resonance or standing waves
    • G01F23/2967—Acoustic waves making use of acoustical resonance or standing waves for discrete levels

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  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Acoustics & Sound (AREA)
  • Electromagnetism (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)

Abstract

내용 없음

Description

진동식 레벨 검출장치
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명의 1실시예에 따른 진동식 레벨검출장치의 일부를 파단한 측면도, 제2도는 제1도에서 나타낸 진동식 레벨검출장치의 확대 단면도, 제3도는 제1도에서 나타낸 진동식 레벨검출장치의 내부 진동판을 나타낸 측면도.

Claims (6)

  1. 그의 한쪽 끝단이 고정단으로서 기부(基部) (1)에 고정되며, 다른쪽 끝단은 자유단을 구성하는 끝단마개(13)에 의하여 폐쇄되는 검출 파이프부(14)와, 상기 검출파이프부(14)내에 배열설치되며, 한쪽 끝단이 상기 끝단마개(13)에 고착되고 다른쪽 끝단은 자유단인 직사각형 막대형상의 내부 진동부재(12)와, 상기 내부진동부재(12)에 고착되며, 상기 내부진동부재(12)를 여진시켜 상기 검출파이프부(14)와 상기 끝단마개(13)및 상기 내부진동부재(12)로 구성되는 접힌 캔틸레버유니트(30)가 접힌 캔틸레버 진동모우드로 진동하도록 하는 가진(加振)수단(16), 및 상기 끝단마개(13)내에 고착되며, 접힌 캔틸레버유니트(30)의 진동의 변화를 검출하는 감지수단(10)으로 구성되는 진동식 레벨검출장치.
  2. 제1항에 있어서, 상기 감지수단(10)은, 상기 끝단마개(13)의 가속도를 감지하기 위한 가속도감지소자(10)를 포함하여 구성되는 진동식 레벨검출장치.
  3. 제1항 또는 제2항에 있어서. 상기 가진수단은, 상기 감지수단과, 상기 가진수단(16)에 증폭신호를 공급하기 위하여 상기 감지수단(10)으로 부터의 검출신호를 증폭하는 증폭회로(17)로 구성되는 자려(自勵)회로를 포함하여 구성되는 진동식 레벨검출장치.
  4. 제3항에 있어서, 상기 감지수단은 출력단자가 검출회로(18)의 입력 단자에 접속되며, 상기 검출회로(18)의 출력을 비교하고, 상기 검출회로(18)의 출력이 미리 정해진 기준신호 보다 작을 때, 검출신호를 출력하는 비교기를 더욱 포함하여 구성되는 진동식 레벨검출장치.
  5. 제3항에 있어서, 상기 가진수단(16)은, 상기 내부진동부재(12)를 진동시키기 위한 압전진동소자인 진동식 레벨검출장치.
  6. 제3항에 있어서, 기부(1)상에 마련되며, 상기 검출파이프(140)의 축방향에 직각으로 설치되는 박막면(20a)을 가지는 박막판 유니트(20)를 더욱 포함하여 구성되는 진동식 레벨검출장치.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019920002196A 1991-02-14 1992-02-14 진동식 레벨검출장치 KR960015076B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP3106964A JP3008991B2 (ja) 1991-02-14 1991-02-14 振動式レベル検出装置
JP91-106964 1991-02-14

Publications (2)

Publication Number Publication Date
KR920016821A true KR920016821A (ko) 1992-09-25
KR960015076B1 KR960015076B1 (ko) 1996-10-24

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Application Number Title Priority Date Filing Date
KR1019920002196A KR960015076B1 (ko) 1991-02-14 1992-02-14 진동식 레벨검출장치

Country Status (7)

Country Link
US (1) US5247832A (ko)
EP (1) EP0499265B1 (ko)
JP (1) JP3008991B2 (ko)
KR (1) KR960015076B1 (ko)
CA (1) CA2060908C (ko)
DE (1) DE69202354T2 (ko)
FI (1) FI102012B1 (ko)

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CN104634419B (zh) * 2015-02-03 2017-12-26 深圳计为自动化技术有限公司 振动式物料开关的质量块、振动装置及谐振频率调试方法
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KR100781199B1 (ko) * 2001-08-27 2007-11-30 칸사이 오토메이숀 가부시키가이샤 진동식 레벨 센서

Also Published As

Publication number Publication date
JPH04259823A (ja) 1992-09-16
FI102012B (fi) 1998-09-30
US5247832A (en) 1993-09-28
EP0499265A2 (en) 1992-08-19
KR960015076B1 (ko) 1996-10-24
JP3008991B2 (ja) 2000-02-14
DE69202354T2 (de) 1995-09-14
FI102012B1 (fi) 1998-09-30
CA2060908A1 (en) 1992-08-15
FI920606A (fi) 1992-08-15
DE69202354D1 (de) 1995-06-14
CA2060908C (en) 1996-09-17
EP0499265B1 (en) 1995-05-10
FI920606A0 (fi) 1992-02-13
EP0499265A3 (en) 1993-05-05

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