Abstract: An apparatus for use in measuring a property of a fluid and a method of measuring a property of a fluid in a conduit. The apparatus is for use in measuring a property of a fluid, the apparatus comprising: a conduit comprising an inlet through which fluid can enter the conduit; a movable member retained within the conduit, the movable member configured to move in accordance with the property of the fluid in the conduit; and a magnetic field generating unit for generating one or more magnetic fields in the conduit, an interaction between the movable member and the one or more magnetic fields being detectable via the magnetic field generating unit, to measure the property.

Abstract: An electromagnetic pump (100). The electromagnetic pump (100) comprises a conduit (101) comprising an inlet (103) and an outlet (105). A first magnetic field generating unit (109) is provided for generating a first magnetic field having a first component with a first direction in the conduit. A second magnetic field generating unit (111) is provided for generating a second magnetic field having a second component with a second direction in the conduit (101), the second direction being substantially opposite to the first direction. A piston member (113) is disposed within the conduit, the piston member (113) being moveable within the conduit (101) under the influence of the first and/or second magnetic fields to pump fluid received from the inlet (103) of the conduit (101) to the outlet (105) of the conduit (101).

Abstract: An electromagnetic pump (100). The electromagnetic pump (100) comprises a conduit (101) comprising an inlet (103) and an outlet (105). A first magnetic field generating unit (109) is provided for generating a first magnetic field having a first component with a first direction in the conduit. A second magnetic field generating unit (111) is provided for generating a second magnetic field having a second component with a second direction in the conduit (101), the second direction being substantially opposite to the first direction. A piston member (113) is disposed within the conduit, the piston member (113) being movable within the conduit (101) under the influence of the first and/or second magnetic fields to pump fluid received from the inlet (103) of the conduit (101) to the outlet (105) of the conduit (101).