FR1173364A - Appareil électronique indicateur de niveau - Google Patents

Appareil électronique indicateur de niveau

Info

Publication number
FR1173364A
FR1173364A FR1173364DA FR1173364A FR 1173364 A FR1173364 A FR 1173364A FR 1173364D A FR1173364D A FR 1173364DA FR 1173364 A FR1173364 A FR 1173364A
Authority
FR
France
Prior art keywords
level indicator
electronic level
electronic
indicator
level
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
Other languages
English (en)
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.)
Gilbarco Inc
Original Assignee
Gilbert and Barker Manufacturing Co 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 Gilbert and Barker Manufacturing Co Inc filed Critical Gilbert and Barker Manufacturing Co Inc
Application granted granted Critical
Publication of FR1173364A publication Critical patent/FR1173364A/fr
Expired legal-status Critical Current

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
    • G01F23/28—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
    • 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
    • G01F23/245—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 with a probe moved by an auxiliary power, e.g. meter, to follow automatically the level
    • 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)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Acoustics & Sound (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
FR1173364D 1956-04-10 1957-03-26 Appareil électronique indicateur de niveau Expired FR1173364A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US1173364XA 1956-04-10 1956-04-10

Publications (1)

Publication Number Publication Date
FR1173364A true FR1173364A (fr) 1959-02-24

Family

ID=22372334

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1173364D Expired FR1173364A (fr) 1956-04-10 1957-03-26 Appareil électronique indicateur de niveau

Country Status (1)

Country Link
FR (1) FR1173364A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0355038A1 (fr) * 1988-07-20 1990-02-21 B.V. Optische Industrie "De Oude Delft" Dispositif de mesure du niveau de l'interface entre un premier et un deuxième milieu dans un réservoir

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0355038A1 (fr) * 1988-07-20 1990-02-21 B.V. Optische Industrie "De Oude Delft" Dispositif de mesure du niveau de l'interface entre un premier et un deuxième milieu dans un réservoir
US5043912A (en) * 1988-07-20 1991-08-27 B.V. Enraf-Nonius Delft Apparatus for measuring the level of the interface between a first and a second medium in a reservoir

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