| 摘要 |
There is disclosed apparatus obtaining information on the content and flow rate in a fluid flow, e.g. a mixture of oil and water flowing in, for example, a pipe, comprising means for conveying (1) a flowing fluid, means for generating a differential pressure (2) in said fluid (3) passing through said means for conveying (1), and means for measuring (4, 5) said differential pressure (4). The invention is characteristic in means for measuring a capacitance (7) comprising at least one electrode (6), and that said means for generating a differential pressure (2) is arranged substantially at the same position along the pipe (1) as the at least one electrode (6) of the capacitance measuring means. Thereby the differential pressure generating means (2) effectively defines an earth electrode for said capacitance measuring means (6, 7). The apparatus also comprises means for combining a result from said means for measuring a differential pressure with a result from said means for measuring a capacitance (7) of a volume (20) of said flowing fluid (3) for thereby to obtain information on the content and flow rate in a fluid flow, said means for measuring a capacitance (7) of a volume (20) is arranged generally in a same section of the fluid conveying means (1) as said means for generating a differential pressure (2). |
