FIELD: physics.SUBSTANCE: invention relates to rheometer for determination and/or control of fluid properties of viscous fluids, particularly polymer melts and solutions, having housing (1), in which between inlet opening (2) and outlet (3) there is at least one, in fact , rectilinear channel (4), wherein this channel (4) has rectangular cross-section, and also having devices (6) for pressure measurement arranged along channel (4), wherein channel (4) along its length is equipped with cyclically tapering (6) and expanding (7) cross section.EFFECT: technical result is simple interpretation of measurement data and corresponding processes, possibility of studying properties of liquid in tension.10 cl, 8 dwg
