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
Priority claimed from PCT/EP1993/001357external-prioritypatent/WO1993024812A1/en
Application filed by Shell Int ResearchfiledCriticalShell Int Research
Publication of NO944522D0publicationCriticalpatent/NO944522D0/en
Publication of NO944522LpublicationCriticalpatent/NO944522L/en
En overføringsledning som er åpen ved den ende, benyttes til å bestemme nivået av eventuelt vann ved bunnen av produktlagringstanker. Endringer i kapasitans som skriver seg fra grenseflaten, overføres ved hjelp av passende tilpas- ning til mye større spenningsendringer på ledningens inngang. Spenningsmåling- ene omformes til nivå ved hjelp av en mikroprosessor.A transfer line open at that end is used to determine the level of any water at the bottom of product storage tanks. Changes in capacitance resulting from the interface are transmitted by means of appropriate adaptation to much larger voltage changes at the line input. The voltage measurements are converted to level by means of a microprocessor.
NO944522A1992-05-281994-11-25
Device for measuring water bottom in a product tank and for providing water bottom information
NO944522L
(en)
Automatic shut-off system for liquid transfer operations - is operated by main valve controlled by double acting membrane with secondary valve operated by level float