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    • 5. 发明申请
    • ELECTROMAGNETIC MONITORING UNIT FOR A LIQUID SUBSTANCE
    • 液体物质电磁监测装置
    • WO2012105897A1
    • 2012-08-09
    • PCT/SE2012/050094
    • 2012-01-31
    • DELAVAL HOLDING ABLIVSHITS, David
    • LIVSHITS, David
    • G01N27/02G01N33/04
    • G01N27/023G01N33/04
    • A monitoring unit (100) determines an attribute (P) of a liquid substance (L) flowing (F) through a non-magnetic conduit (110). To this aim, a helical coil (125) encircles the non-magnetic conduit (110). The helical coil (125) imposes an electromagnetic field (B) on the liquid substance (L) and registers fluctuations in the electromagnetic field (B) caused by the liquid substance (L). Said fluctuations are indicative of at least one electromagnetic property (z) of the liquid substance (L), and based on the at least one electromagnetic property (z), in turn, a processor (170) derives the attribute (P). For enhanced efficiency and reduced interference, a magnetic shield (150) is arranged around the helical coil (120), which magnetic shield (150) concentrates the electromagnetic field (B) towards the non-magnetic conduit (110) inside the helical coil (125).
    • 监测单元(100)通过非磁性导管(110)确定流过(F)的液体物质(L)的属性(P)。 为此目的,螺旋线圈(125)围绕非磁性导管(110)。 螺旋线圈(125)在液体物质(L)上施加电磁场(B)并记录由液体物质(L)引起的电磁场(B)的波动。 所述波动表示液体物质(L)的至少一个电磁特性(z),并且基于所述至少一个电磁特性(z),处理器(170)依次得出属性(P)。 为了提高效率和减少的干扰,围绕螺旋线圈(120)布置有磁屏蔽(150),该磁屏蔽(150)将电磁场(B)集中在螺旋线圈内的非磁性导管(110) 125)。