Patent ID: 7940038

Claim:
An arrangement for the two-dimensional measurement of different components in the cross section of a multiphase flow, comprising a grid sensor ( 1 ) whose grid is constructed from transmitting electrodes ( 3 a ) and receiver electrodes ( 3 b ) which are in the form of wires or rods and are arranged on two coplanar levels at a distance of a few millimeters, the electrodes within each level being arranged parallel to one another and electrodes on different levels being arranged at an angle of approximately 90° with respect to one another, associated measurement electronics ( 2 ) comprising at least one sine- wave generator ( 5 ) for generating an AC voltage signal as well as current-voltage converters ( 7 ) and vector voltmeters ( 8 ) for measuring the complex voltage ratio U a /U e of the current-voltage converter output voltage and AC voltage signal, characterized in that at least one sine-wave generator ( 5 ) which applies an AC voltage to the transmitting electrodes ( 3 a ) is connected upstream of the transmitting electrodes ( 3 a ) on an excitation level, current-voltage converters ( 7 ) which amplify the alternating current flowing through the multiphase flow from at least one excitation electrode ( 3 a ) to the receiver electrodes ( 3 b ) and convert it into a voltage signal are connected downstream of the receiver electrodes ( 3 b ), filter groups ( 10 , 11 , 16 ) and vector voltmeters ( 8 ) which are used to metrologically detect the complex signal ratio U a /U e are connected downstream of the current-voltage converter ( 7 ).