  The acoustelectric current for composite fermions in a two-dimensional
electron gas (2DEG) close to the half-filled Landau level is calculated in the
random phase approximation. The Boltzmann equation is used to find the
nonequilibrium distribution of composite fermions to second order in the
acoustic field.It is shown that the oscillating Chern-Simons field created by
the induced density fluctuations in the 2DEG is important for the
acoustoelectric current. This leads to a violation of the Weinreich relation
between the acoustoelectric current and acoustic intensity. The deviations from
the Weinreich relation can be detected by measuring the angle between the
longitudinal and the Hall components of the acoustoelectric current. This
departure from the Weinreich relation gives additional information on the
properties of the compostite fermion fluid.
