Abstract: The present disclosure concerns systems for enriching liquids with one or more additives. More particularly, the disclosure concerns systems for in-line addition of various nutrients into drinking water, the system being configured to add an accurate amount of nutrient into the water as it flows in the supply line based on the actual volume of water flowing through the line.

Abstract: A monitoring system is presented for monitoring quality of fluid in a fluid chamber. The system includes: a sensing system which comprises sensing units of different types configured to measure multiple parameters of the fluid and generate corresponding measured fluid quality data and to perform self-diagnostic of an operational condition of the sensing system and generate sensing data indicative of sensing quality, and a control system comprising a local controller configured to be responsive to data indicative of a relation between the measured fluid quality data and the sensing quality and selectively generate operational data to initiate one or more of the following: generation of alarm signal indicative of an abnormal condition of the quality of the fluid, correction of the measured fluid quality data in accordance with the sensing quality; and replacement of one or more elements of the sensing units.

Abstract: An electromechanical actuator includes a base part and an oscillation resonator having the shape of a rod. The electromechanical actuator further includes amount for mounting the oscillation resonator to the base part. The mount is configured to bear the oscillation resonator so as to be rotatable around an axis of the oscillation resonator rod relative to the base part. A driver member is mechanically coupled to the oscillation resonator. A slider or a rotator is configured to be moved by the driver member when the oscillation resonator is excited.

Abstract: An electromechanical actuator includes a base part and an oscillation resonator having the shape of a rod. The electromechanical actuator further includes amount for mounting the oscillation resonator to the base part. The mount is configured to bear the oscillation resonator so as to be rotatable around an axis of the oscillation resonator rod relative to the base part. A driver member is mechanically coupled to the oscillation resonator. A slider or a rotator is configured to be moved by the driver member when the oscillation resonator is excited.

Abstract: An electromechanical actuator includes an oscillation resonator having the shape of a rod. The oscillation resonator is divided by a dividing plane that is not parallel to the longitudinal direction of the oscillation resonator into a first resonator portion and a second resonator portion. At least the first resonator portion includes electromechanical means which, when activated, are configured to generate a 3-dimensional acoustic bulk wave are with a mode shape asymmetric with respect to the dividing plane.

Abstract: An electromechanical actuator includes an oscillation resonator having the shape of a rod. The oscillation resonator is divided by a dividing plane that is not parallel to the longitudinal direction of the oscillation resonator into a first resonator portion and a second resonator portion. At least the first resonator portion includes electromechanical means which, when activated, are configured to generate a 3-dimensional acoustic bulk wave are with a mode shape asymmetric with respect to the dividing plane.