ES2009298A6 - Aparato de deeccion de nivel de liquido. - Google Patents

Aparato de deeccion de nivel de liquido.

Info

Publication number
ES2009298A6
ES2009298A6 ES8801991A ES8801991A ES2009298A6 ES 2009298 A6 ES2009298 A6 ES 2009298A6 ES 8801991 A ES8801991 A ES 8801991A ES 8801991 A ES8801991 A ES 8801991A ES 2009298 A6 ES2009298 A6 ES 2009298A6
Authority
ES
Spain
Prior art keywords
frequency
output
phase detector
probe
voltage
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.)
Expired
Application number
ES8801991A
Other languages
English (en)
Inventor
Ii Donald Paul Labriola
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.)
Beckman Coulter Inc
Original Assignee
Beckman Instruments Inc
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 Beckman Instruments Inc filed Critical Beckman Instruments Inc
Publication of ES2009298A6 publication Critical patent/ES2009298A6/es
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
    • G01N35/10—Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices
    • G01N35/1009—Characterised by arrangements for controlling the aspiration or dispense of liquids
    • 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
    • G01F23/26—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 variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields
    • G01F23/263—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 variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields by measuring variations in capacitance of capacitors
    • 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
    • G01F23/26—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 variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields
    • G01F23/263—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 variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields by measuring variations in capacitance of capacitors
    • G01F23/266—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 variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields by measuring variations in capacitance of capacitors measuring circuits therefor
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
    • G01N35/10—Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices
    • G01N35/1009—Characterised by arrangements for controlling the aspiration or dispense of liquids
    • G01N2035/1025—Fluid level sensing

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
  • Level Indicators Using A Float (AREA)

Abstract

APARATO DE DETECCION DE NIVEL DE LIQUIDO. SE DESCRIBE UN SISTEMA DE DETECCION DE NIVEL DE LIQUIDO QUE INCLUYE UNA SONDA Y UN ELEMENTO REACTIVO SOPORTADO POR LA SONDA. EL ELEMENTO REACTIVO FORMA PARTE DE UN CIRCUITO SINTONIZADO DE UN OSCILADOR CONTROLADO POR TENSION. LA SALIDA DEL OSCILADOR CONTROLADO POR TENSION SE COMPARA CON UNA SEÑAL DE REFERENCIA DE FRECUENCIA FIJA, Y UN DETECTOR DE FRECUENCIA/FASE GENERA UNA SEÑAL INDICATIVA DE UNA DIFERENCIA CUALQUIERA. LA SALIDA DEL DETECTOR DE FRECUENCIA/FASE SE APLICA AL OSCILADOR CONTROLADO POR TENSION PARA MANTENER LA FRECUENCIA DE SALIDA DEL OSCILADOR IGUAL A LA FRECUENCIA DE LA SEÑAL DE REFERENCIA. LA SALIDA DEL DETECTOR DE FRECUENCIA/FASE SE DIFERENCIA IGUALMENTE PARA GENERAR UN IMPULSO CUANDO LA SEÑAL DE SALIDA DEL DETECTOR DE FRECUENCIA/FASE VARIA RAPIDAMENTE, LO QUE INDICA EL CONTACTO INICIAL ENTRE LA SONDA Y LA SUPERFICIE DE UN LIQUIDO CONTENIDO EN UN RECIPIENTE.
ES8801991A 1987-06-26 1988-06-24 Aparato de deeccion de nivel de liquido. Expired ES2009298A6 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/067,183 US4912976A (en) 1987-06-26 1987-06-26 Liquid level sensing apparatus

Publications (1)

Publication Number Publication Date
ES2009298A6 true ES2009298A6 (es) 1989-09-16

Family

ID=22074259

Family Applications (1)

Application Number Title Priority Date Filing Date
ES8801991A Expired ES2009298A6 (es) 1987-06-26 1988-06-24 Aparato de deeccion de nivel de liquido.

Country Status (7)

Country Link
US (1) US4912976A (es)
EP (1) EP0319573B1 (es)
JP (1) JPH0641140Y2 (es)
AU (1) AU598693B2 (es)
DE (1) DE3871738T2 (es)
ES (1) ES2009298A6 (es)
WO (1) WO1988010412A1 (es)

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US9529009B2 (en) 2011-06-06 2016-12-27 Hitachi High-Technologies Corporation Automatic analyzer
US9261395B2 (en) 2012-02-13 2016-02-16 Goodrich Corporation Liquid level sensing system
US9574928B2 (en) 2012-02-13 2017-02-21 Goodrich Corporation Liquid level sensing systems
JP2015087329A (ja) * 2013-10-31 2015-05-07 シスメックス株式会社 吸引部の位置調整方法及び検体処理装置
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US11069678B2 (en) * 2017-08-29 2021-07-20 Qorvo Us, Inc. Logic gate cell structure
KR20210016050A (ko) 2018-06-22 2021-02-10 비쎌 인코포레이티드 표면을 청소하기 위한 장치
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Also Published As

Publication number Publication date
AU598693B2 (en) 1990-06-28
DE3871738D1 (de) 1992-07-09
JPH02500020U (es) 1990-04-26
WO1988010412A1 (en) 1988-12-29
US4912976A (en) 1990-04-03
EP0319573A1 (en) 1989-06-14
JPH0641140Y2 (ja) 1994-10-26
EP0319573B1 (en) 1992-06-03
DE3871738T2 (de) 1992-12-10
AU2132688A (en) 1989-01-19

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Legal Events

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FD1A Patent lapsed

Effective date: 20040503