DETERMINING LEVEL OF CONCRETE IN A CONCRETE MIXER BY LIQUID CRYSTAL THERMOGRAPHIC STRIP APPLIED TO DRUM EXTERIOR

The present invention relates to a method for determining the level of concrete in a concrete mixer comprising the steps of contacting the exterior of concrete mixing drum with a strip of thermal color sensitive material and observing the interface on the color sensitive material produced by the tem...

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Bibliographische Detailangaben
1. Verfasser:	DE MARS, JOHN OWEN
Format:	Patent
Sprache:	eng
Schlagworte:	MEASURING MEASURING QUANTITY OF HEAT MEASURING TEMPERATURE MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUIDLEVEL METERING BY VOLUME MIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PHYSICS TESTING THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR TRANSPORTING
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Beschreibung
Zusammenfassung:	The present invention relates to a method for determining the level of concrete in a concrete mixer comprising the steps of contacting the exterior of concrete mixing drum with a strip of thermal color sensitive material and observing the interface on the color sensitive material produced by the temperature differential between the concrete and the air above. This level can then be lined up horizontally with a graduated volume indicator, to yield the concrete volume in the truck.