Device and procedure for determining the level and the density of a liquid in a tub, by means of a single bubble plunger tube

The device has a reference channel (16) which opens in the tank (12) above the liquid and a single bubble (22) channel immersed below the liquid surface. At the lower end of this channel is an enlarged section (22a), the lower end of which is at a known height (Hd) above the tank bottom. A method fo...

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Bibliographische Detailangaben
Hauptverfasser:	DRAIN, FRANCOIS, GAGNIERE, JACQUES
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS,e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES,DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS CONVEYING DECONTAMINATION ARRANGEMENTS THEREFOR HANDLING THIN OR FILAMENTARY MATERIAL INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUIDLEVEL METERING BY VOLUME NUCLEAR ENGINEERING NUCLEAR PHYSICS PACKAGES PACKAGING ELEMENTS PACKING PERFORMING OPERATIONS PHYSICS PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULARRADIATION OR PARTICLE BOMBARDMENT STORING TESTING TRANSPORTING TREATING RADIOACTIVELY CONTAMINATED MATERIAL
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Beschreibung
Zusammenfassung:	The device has a reference channel (16) which opens in the tank (12) above the liquid and a single bubble (22) channel immersed below the liquid surface. At the lower end of this channel is an enlarged section (22a), the lower end of which is at a known height (Hd) above the tank bottom. A method for injection of air (20,26) into the reference (16) and bubble (22) channel is provided as well as a valve (30) for opening and closing a communication channel between the two transmitter (32) for measuring pressure difference between the two channels. The two channels are initially connected, then the valve (30) is shut and the air in the bubble channel slowly forces the liquid out of the enlarged section. The transmitter (32) follows the pressure as a function of time and the slope changes when the level reaches the top (A) and then the bottom (B) of the enlarged section. The pressure values at these two levels permit the liquid density and then its level to be determined.