DK167714B1 - Indretning til maaling af et medieniveau - Google Patents

Indretning til maaling af et medieniveau Download PDF

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Publication number
DK167714B1
DK167714B1 DK514289A DK514289A DK167714B1 DK 167714 B1 DK167714 B1 DK 167714B1 DK 514289 A DK514289 A DK 514289A DK 514289 A DK514289 A DK 514289A DK 167714 B1 DK167714 B1 DK 167714B1
Authority
DK
Denmark
Prior art keywords
distance
time
sensor
reference reflector
media
Prior art date
Application number
DK514289A
Other languages
Danish (da)
English (en)
Other versions
DK514289D0 (da
DK514289A (da
Inventor
Cai Risskov Nielsen
Poul Boerge Juul Nielsen
Original Assignee
Danfoss As
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 Danfoss As filed Critical Danfoss As
Publication of DK514289D0 publication Critical patent/DK514289D0/da
Publication of DK514289A publication Critical patent/DK514289A/da
Application granted granted Critical
Publication of DK167714B1 publication Critical patent/DK167714B1/da

Links

Classifications

    • 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
    • G01F23/24—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 resistance of resistors due to contact with conductor fluid
    • G01F23/241—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 resistance of resistors due to contact with conductor fluid for discrete levels
    • G01F23/243—Schematic arrangements of probes combined with measuring circuits
    • G01F23/244—Schematic arrangements of probes combined with measuring circuits comprising oscillating circuits
    • 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
    • G01F23/24—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 resistance of resistors due to contact with conductor fluid
    • G01F23/241—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 resistance of resistors due to contact with conductor fluid for discrete levels
    • G01F23/242—Mounting arrangements for electrodes
    • 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
    • G01F23/2962—Measuring transit time of reflected waves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/88—Sonar systems specially adapted for specific applications
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D9/00—Level control, e.g. controlling quantity of material stored in vessel
    • G05D9/12—Level control, e.g. controlling quantity of material stored in vessel characterised by the use of electric means

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Acoustics & Sound (AREA)
  • Automation & Control Theory (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Electromagnetism (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
  • Control Of Non-Electrical Variables (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
DK514289A 1988-10-18 1989-10-17 Indretning til maaling af et medieniveau DK167714B1 (da)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3835406 1988-10-18
DE19883835406 DE3835406A1 (de) 1988-10-18 1988-10-18 Vorrichtung zum messen eines fuellstandes

Publications (3)

Publication Number Publication Date
DK514289D0 DK514289D0 (da) 1989-10-17
DK514289A DK514289A (da) 1990-04-19
DK167714B1 true DK167714B1 (da) 1993-12-06

Family

ID=6365349

Family Applications (1)

Application Number Title Priority Date Filing Date
DK514289A DK167714B1 (da) 1988-10-18 1989-10-17 Indretning til maaling af et medieniveau

Country Status (4)

Country Link
JP (1) JPH0674995B2 (ja)
DE (1) DE3835406A1 (ja)
DK (1) DK167714B1 (ja)
GB (1) GB2225113B (ja)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4405238C2 (de) 1994-02-18 1998-07-09 Endress Hauser Gmbh Co Anordnung zur Messung des Füllstands in einem Behälter
DE4416038A1 (de) * 1994-05-06 1995-11-09 Sigmund Birle Regenwassernutzungsanlage
US5672975A (en) 1995-06-07 1997-09-30 Rosemount Inc. Two-wire level transmitter
IT1310723B1 (it) 1999-09-16 2002-02-22 Elbi Int Spa Dispositivo per rilevare le condizioni di funzionamento di almenouna girante di spruzzatura di una macchina lavastoviglie
DE10014887B4 (de) * 2000-03-24 2011-08-11 Volkswagen AG, 38440 Vorrichtung zur Bestimmung der Füllstandshöhe eines Füllmediums in einem Tank, insbesondere einem Tank eines Kraftfahrzeugs
US7017408B2 (en) * 2004-02-13 2006-03-28 Be Intellectual Property, Inc. Electro-optic liquid level sensing system for aircraft beverage brewing

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE790291A (fr) * 1971-10-23 1973-02-15 Licentia Gmbh Dispositif de determination du niveau d'un liquide electriquement conducteur, notamment pour des machines a laver le linge et la vaisselle
DE2743409C3 (de) * 1977-09-27 1980-09-04 Endress U. Hauser Gmbh U. Co, 7867 Maulburg Ve rstärkeranordnung für einen nach dem Echoprinzip arbeitenden Ultraschall-Füllstandgrenzschalter
DE3339984A1 (de) * 1983-11-04 1985-05-23 Endress U. Hauser Gmbh U. Co, 7867 Maulburg Schall- bzw. ultraschall-entfernungsmessgeraet
GB2198535B (en) * 1986-11-01 1991-06-05 Parke Davis & Co Ltd Apparatus and method for determining the amount of substance in a vessel

Also Published As

Publication number Publication date
GB8923413D0 (en) 1989-12-06
GB2225113B (en) 1992-10-07
DE3835406A1 (de) 1990-04-19
DK514289D0 (da) 1989-10-17
JPH0674995B2 (ja) 1994-09-21
JPH02159522A (ja) 1990-06-19
GB2225113A (en) 1990-05-23
DE3835406C2 (ja) 1991-07-04
DK514289A (da) 1990-04-19

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Legal Events

Date Code Title Description
B1 Patent granted (law 1993)
PBP Patent lapsed