The present invention relates to a multiphase meter system for measuring the composition and/or salinity of a fluid flow in a pipe, comprising: • a resonance measuring means including a transmitting antenna (11) for providing varying electromagnetic field within a first frequency range in the pipe and a receiver antenna (12) for measuring the resonance characteristics of the field in said pipe and an evaluation means for determining the quality of said resonance, • a transmission measuring means including a transmitting antenna (11) for transmitting a varying electromagnetic signal within a second frequency range, at least two receiver antennas (12, 13) being positioned at different distances from said transmitter antenna, and a time measuring means for determining the phase difference and difference in measured damping between the receipt of the transmitted signal at said two receiver antennas, and • a control means comparing the resonance quality with a predetermined threshold value and when said resonance quality is above said threshold calculating the composition and/or salinity from said resonance characteristics or when said resonance quality is below said threshold calculating said composition and/or salinity from said transmission phase difference and damping.