DE3737204C2 - - Google Patents

Info

Publication number
DE3737204C2
DE3737204C2 DE19873737204 DE3737204A DE3737204C2 DE 3737204 C2 DE3737204 C2 DE 3737204C2 DE 19873737204 DE19873737204 DE 19873737204 DE 3737204 A DE3737204 A DE 3737204A DE 3737204 C2 DE3737204 C2 DE 3737204C2
Authority
DE
Germany
Prior art keywords
pipette
signal
liquid
holder
amplifier
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 - Fee Related
Application number
DE19873737204
Other languages
German (de)
English (en)
Other versions
DE3737204A1 (de
Inventor
Rolf Dipl.-Ing. Amelung
Ernst-Aug. Brakemeier
Helmut 4920 Lemgo De Becker
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.)
Heinrich Amelung 4920 Lemgo De GmbH
Original Assignee
Heinrich Amelung 4920 Lemgo De GmbH
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 Heinrich Amelung 4920 Lemgo De GmbH filed Critical Heinrich Amelung 4920 Lemgo De GmbH
Priority to DE19873737204 priority Critical patent/DE3737204A1/de
Publication of DE3737204A1 publication Critical patent/DE3737204A1/de
Application granted granted Critical
Publication of DE3737204C2 publication Critical patent/DE3737204C2/de
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
    • B01L3/02—Burettes; Pipettes
    • B01L3/021—Pipettes, i.e. with only one conduit for withdrawing and redistributing liquids
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F11/00—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it
    • G01F11/28—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with stationary measuring chambers having constant volume during measurement
    • G01F11/284—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with stationary measuring chambers having constant volume during measurement combined with electric level detecting means
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Electromagnetism (AREA)
  • Thermal Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Clinical Laboratory Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Automatic Analysis And Handling Materials Therefor (AREA)
  • Sampling And Sample Adjustment (AREA)
DE19873737204 1987-11-03 1987-11-03 Vorrichtung zum dosierten umfuellen von fluessigkeiten Granted DE3737204A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19873737204 DE3737204A1 (de) 1987-11-03 1987-11-03 Vorrichtung zum dosierten umfuellen von fluessigkeiten

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19873737204 DE3737204A1 (de) 1987-11-03 1987-11-03 Vorrichtung zum dosierten umfuellen von fluessigkeiten

Publications (2)

Publication Number Publication Date
DE3737204A1 DE3737204A1 (de) 1989-05-24
DE3737204C2 true DE3737204C2 (enExample) 1990-08-30

Family

ID=6339642

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19873737204 Granted DE3737204A1 (de) 1987-11-03 1987-11-03 Vorrichtung zum dosierten umfuellen von fluessigkeiten

Country Status (1)

Country Link
DE (1) DE3737204A1 (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19830442A1 (de) * 1998-07-08 2000-01-13 Rossendorf Forschzent Anordnung zur akustischen Volumenbestimmung

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2136630A1 (en) * 1992-06-08 1993-12-23 John E. Waylet, Jr. Liquid dispensing system
DE59309797D1 (de) * 1992-12-19 1999-10-28 Roche Diagnostics Gmbh Vorrichtung zur Detektion einer Flüssigkeitphasengrenze in einem lichtdurchlässigen Messrohr
DE19649880B4 (de) * 1996-12-02 2004-07-15 Pfeiffer, Wolfdietrich Verfahren und Vorrichtung zur Charakterisierung und Steuerung, chromatographischer Trennungen
EP1975629A1 (en) 2007-03-30 2008-10-01 F.Hoffmann-La Roche Ag Method and apparatus for detecting contact of a pipetting needle with a liquid in a vessel
GB2563192B (en) * 2017-03-16 2021-02-24 Rosemount Measurement Ltd Improvements in or relating to vibrating element apparatus

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1250147B (de) * 1964-01-20 1967-09-14 Philips Patentverwaltung Fuellstandsmesseinrichtung fuer Fluessigkeiten
CH550998A (de) * 1973-04-30 1974-06-28 Schoenenberger Peter Verfahren und vorrichtung zur fuellstandskontrolle von behaeltern.
JPH04279Y2 (enExample) * 1981-05-21 1992-01-07
JPS5822946A (ja) * 1981-08-03 1983-02-10 Olympus Optical Co Ltd 境界面検出装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19830442A1 (de) * 1998-07-08 2000-01-13 Rossendorf Forschzent Anordnung zur akustischen Volumenbestimmung
DE19830442B4 (de) * 1998-07-08 2004-04-29 Forschungszentrum Rossendorf E.V. Anordnung zur akustischen Volumenbestimmung

Also Published As

Publication number Publication date
DE3737204A1 (de) 1989-05-24

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
D2 Grant after examination
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee