Patent ID: 9448189
Filing Date: 2016-09-20
CPC Classification: G01F,G01N

Claim Text:
1. An apparatus for determining fluid phase fraction of a multiphase fluid mixture, the apparatus comprising: an x-ray generator arranged to emit an x-ray radiation spectrum comprising a Bremsstrahlung spectrum including a low energy region and a high energy region; a pipe section through which the multiphase fluid mixture flows comprising a measurement section, said measurement section being coupled to said x-ray generator; a multichannel analyzer; a detector coupled to said measurement section and arranged to detect an x-ray radiation spectrum that has passed through said multiphase fluid mixture, the detector being coupled to the multichannel analyzer producing a measurement output comprising a low energy measurement count (LE) and a high energy measurement count (HE) and a low energy control count (LV) and a high energy control count (HV), the low energy control count (LV) and the high energy control count (HV) determined from a low energy control window and a high energy control window, wherein each control window is located along an edge of the Bremsstrahlung spectrum, respectively; and an electrical parameter control arrangement coupled to the x-ray generator and the detector, the electrical parameter control arrangement being arranged to calculate a first ratio (R