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Publication of AT176248BpublicationCriticalpatent/AT176248B/de
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
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
G01F23/284—Electromagnetic waves
G01F23/292—Light, e.g. infrared or ultraviolet
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Physics & Mathematics
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Electromagnetism
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General Physics & Mathematics
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Thermal Sciences
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Fluid Mechanics
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Engineering & Computer Science
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Automation & Control Theory
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AT176248D1950-10-111950-11-29Anordnung zur Überwachung von Flüssigkeitsständen, insbesondere bei Hochdruckgefäßen
AT176248B
(de)
Einrichtung zur Überwachung des Druckes in zwei oder mehr unter gleichem Druck stehenden Behältern, insbesondere in Zwillingsreifen von Lastkraftwagen.