[en] The results of calculating the dectromagnetic transducer signal used for investigating the hydrodynamics of liquid metal coolants in nuclear reactor model fuel assemblies are presented. The calculations are carried out for channels of triangular, square and hexahedral configurations as well as for cells of infinite fuel element lattices and for eccen tric annular channels. The problem of the channel configuration effect on the proportionality coefficient K between the transducer signal and the coolant velocity is investigated. Dimensions of the transducer magnet are chosen in such a way that K does not depend on the pitch of the infinite fuel element lattice. The transducer signals in infinite fuel element lattices are calculated for turbulent and laminar coolant flows. Calculations for other channels are performed for turbulent coolant flow with two values of the Reynolds number. It has been elucidated that the proportionality coefficients K averaged over angle are equal for the investigated channels of triangular and square configurations, eccentric rings and for hexahedral channel. K is in dependent of the transducer orientation angle (with 10% accuracy) for all channels under investigation