In this paper we present a sensor set-up based on magnetic liquids and
provided for devices designed to measurement and control of physical
parameters as: slope, displacement, acceleration, vibration parameters
, value and direction of a magnetic field, etc. The sensor is under th
e influence of two crossed magnetic fields. one is a continuous field
and the other is an alternative field. The electromotive force induced
in the pickup coils depends of the position of the magnetic liquid in
to the sensor. (C) 1997 Elsevier Science S.A.