The invention relates to a variable-area flow meter with a measuring tube in which a float provided with at least one permanent magnet and movable by a fluid flowing through the measuring tube is arranged, and with an indicating device arranged outside the measuring tube, said indicating device comprising a magnet holder rotatably mounted about a rotation axis, said magnet holder holding at least one follower magnet that follows the movement of the permanent magnet, and having an indicating element which reflects the movement of the at least one follower magnet, wherein at least one follower magnet in the magnet holder is arranged in such a manner that its magnetic axis is inclined in relation to the rotation axis by an angle () not equal to 90.

The invention relates to a variable-area flow meter with a measuring tube in which a float provided with at least one permanent magnet and movable by a fluid flowing through the measuring tube is arranged, and with an indicating device arranged outside the measuring tube, said indicating device comprising a magnet holder rotatably mounted about a rotation axis, said magnet holder holding at least one follower magnet that follows the movement of the permanent magnet, and having an indicating element which reflects the movement of the at least one follower magnet, wherein at least one follower magnet in the magnet holder is arranged in such a manner that its magnetic axis is inclined in relation to the rotation axis by an angle () not equal to 90.

A flowmeter (5) is provided having a housing (28) configured to accept a flow of a process material. A diaphragm (18) is disposed in the housing (28), and is deformable by the flow of the process material. A sensor (48) is configured to detect a deformation in the diaphragm (18), and the flowmeter (5) is configured to measure the flow of the process material.

A flowmeter (5) is provided having a housing (28) configured to accept a flow of a process material. A diaphragm (18) is disposed in the housing (28), and is deformable by the flow of the process material. A sensor (48) is configured to detect a deformation in the diaphragm (18), and the flowmeter (5) is configured to measure the flow of the process material.

A taper pipe-shaped area flow meter uses a magnetostrictive distance measurement method through which a flow rate may be accurately measured by measuring a height of a float through a magnetostrictive method. A taper pipe-shaped area flow meter using a magnetostrictive distance measurement method includes a taper pipe including an inlet at a lower portion thereof and an outlet at an upper portion thereof and formed in a taper shape having a diameter decreasing downward, a float in which a magnet is embedded and a height of the float is changed according to a flow rate in the taper pipe, a probe shaft in which a magnetrostrictive line is embedded and which is installed in the taper pipe and detects a position of the float through the magnetostrictive method, and a magnetostrictive distance measuring part, which is configured to apply a pulse to the probe shaft, receive a signal reflected by the magnet of the float, measure a position of the float, and calculate a flow rate from the position of the float. The taper pipe-shaped area flow meter using the magnetostrictive distance measurement method has a high accuracy because the magnetostrictive method is applied thereto and may inexpensively measure a flow rate by using a simple mechanical structure, and there is an advantage in that a measured value is provided as an electric signal and used in various fields such as a process control.

A taper pipe-shaped area flow meter uses a magnetostrictive distance measurement method through which a flow rate may be accurately measured by measuring a height of a float through a magnetostrictive method. A taper pipe-shaped area flow meter using a magnetostrictive distance measurement method includes a taper pipe including an inlet at a lower portion thereof and an outlet at an upper portion thereof and formed in a taper shape having a diameter decreasing downward, a float in which a magnet is embedded and a height of the float is changed according to a flow rate in the taper pipe, a probe shaft in which a magnetrostrictive line is embedded and which is installed in the taper pipe and detects a position of the float through the magnetostrictive method, and a magnetostrictive distance measuring part, which is configured to apply a pulse to the probe shaft, receive a signal reflected by the magnet of the float, measure a position of the float, and calculate a flow rate from the position of the float. The taper pipe-shaped area flow meter using the magnetostrictive distance measurement method has a high accuracy because the magnetostrictive method is applied thereto and may inexpensively measure a flow rate by using a simple mechanical structure, and there is an advantage in that a measured value is provided as an electric signal and used in various fields such as a process control.

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.

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.

A vehicle coolant flow and coolant quality sensor assembly for use in an internal combustion engine (ICE) vehicle, a hybrid vehicle, or an electric vehicle. The coolant flow sensor includes a dual coil magnetic flow meter or the like for measuring coolant flow rate and the coolant quality sensor includes a sealed hot wire anemometer or the like and an integrated temperature sensor or the like for measuring coolant quality (e.g., ability to absorb heat) and coolant temperature, respectively. The various sensors are disposed in an integrated housing through which coolant is transported.

A vehicle coolant flow and coolant quality sensor assembly for use in an internal combustion engine (ICE) vehicle, a hybrid vehicle, or an electric vehicle. The coolant flow sensor includes a dual coil magnetic flow meter or the like for measuring coolant flow rate and the coolant quality sensor includes a sealed hot wire anemometer or the like and an integrated temperature sensor or the like for measuring coolant quality (e.g., ability to absorb heat) and coolant temperature, respectively. The various sensors are disposed in an integrated housing through which coolant is transported.