Some embodiments provide an irrigation flow sensor system, comprising: a housing forming a fluid channel to cooperate with conduits of an irrigation system; a paddle wheel device with at least a first blade of a set of the blades comprises a magnetic element; the paddle wheel device is positioned with at least a portion of the blades extends into the fluid channel as the blades rotate about an axis; a magnetic sensor proximate a pathway of the magnetic element as it rotates configured to provide a sensor output every time the magnetic element passes the magnetic sensor; a switch coupled to the magnetic sensor and a current loop, wherein the switch in an activate state is configured to temporarily change the current in the current loop in response to the sensor output, with a rate of change in current corresponding to a flow rate of the fluid flowing.

A cartridge hydraulic flow sensor includes an exterior, interior, head, base, a circuit board, and first and second ports. The first and second ports permit fluid to flow into and out of the interior. A Hall Effect Sensor in the interior detects the number of revolutions of an impeller. An electric coupler interfaces with the sensor and a transmitter for communication of the revolutions of the impeller to a controller. The controller determines the rate of fluid flow in a conduit. The controller automatically issues a command signal to a component of a hydraulic system to alter the rate of fluid flow in the conduit. The cartridge hydraulic flow sensor is easily and releasably engaged to a cavity of a hydraulic circuit manifold.

A fluid metering device including a housing, an isolated fluid conduit, a metering assembly, an electronics assembly, and a power assembly. An electronic device can be wirelessly connected to the metering device so as to quantify the fluid that is passing through the isolated fluid conduit. Portable spraying apparatuses are also disclosed and can include the fluid metering device. In example embodiments, other data can be captured and/or calculated such as location of spray, type of fluid sprayed, images of the intended-to-be-sprayed subject, and/or other information pertinent as desired. In some example embodiments, the electronic device D in combination with the fluid metering device can predict the chances of volatilization of the fluid based on specific environmental conditions and the fluid temperature.

A flow meter includes a rotating structure, a sensing element and a processing circuit. The rotating structure has a shaft, a rotating element, and a magnetic element. The rotating element can be driven by a fluid in a pipeline to rotate around the shaft. The magnetic element is arranged on the rotating element with two magnetic poles parallel to a tangent line of rotating circle of the rotating element. The sensing element is separated from the rotating structure by a distance, and includes a first sensing unit and a second sensing unit, respectively sensing a magnetic field of the magnetic element in different directions to generate a first component signal and a second magnetic field component signal. The processing circuit is connected to the sensing element, and generates an angle of the rotating structure according to the first magnetic field component signal and the second magnetic field component signal.

A cartridge-style flow sensor for sensing fluid flow within a manifold. The sensor includes an exterior, interior, a circuit board, and first and second ports. The first and second ports permit fluid to flow into and out of the interior. A Hall Effect Sensor in the interior detects the number of revolutions of an impeller. An electric coupler interfaces with the sensor and a transmitter for communication of the revolutions of the impeller to a controller. The controller determines the rate of fluid flow in a conduit. The controller automatically issues a command signal to a component of a hydraulic system to alter the rate of fluid flow in the conduit. The cartridge hydraulic flow sensor is easily and releasably engaged to a cavity of a hydraulic circuit manifold.

A flowmeter that achieves both high reliability and a low cost is provided. The flowmeter includes an impeller that is rotatably supported in a flow path, a magnetic sensor that detects a magnetic change associated with a rotation of the impeller, and a magnet that applies a magnetic field to the magnetic sensor, wherein the impeller is formed of a magnetic material that is not magnetized, and the magnetic sensor and the magnet are arranged outside the flow path.

A sensor unit that is configured to improve the non-contact, magnetic interface on a gas meter. The configurations may include a pair of magnets that co-rotate in response to a magnet internal to the gas meter. At least one of the magnets may also move longitudinally in proximity to the internal magnet. This feature aligns the magnets with one another to ensure proper magnetic coupling with the internal magnet.

Some embodiments provide an irrigation flow sensor system, comprising: a housing forming a fluid channel to cooperate with conduits of an irrigation system; a paddle wheel device with at least a first blade of a set of the blades comprises a magnetic element; the paddle wheel device is positioned with at least a portion of the blades extends into the fluid channel as the blades rotate about an axis; a magnetic sensor proximate a pathway of the magnetic element as it rotates configured to provide a sensor output every time the magnetic element passes the magnetic sensor; a switch coupled to the magnetic sensor and a current loop, wherein the switch in an activate state is configured to temporarily change the current in the current loop in response to the sensor output, with a rate of change in current corresponding to a flow rate of the fluid flowing.

A fluid metering device including a housing, an isolated fluid conduit, a metering assembly, an electronics assembly, and a power assembly. An electronic device can be wirelessly connected to the metering device so as to quantify the fluid that is passing through the isolated fluid conduit. Portable spraying apparatuses are also disclosed and can include the fluid metering device. In example embodiments, other data can be captured and/or calculated such as location of spray, type of fluid sprayed, images of the intended-to-be-sprayed subject, and/or other information pertinent as desired. In some example embodiments, the electronic device D in combination with the fluid metering device can predict the chances of volatilization of the fluid based on specific environmental conditions and the fluid temperature.

A fluid metering device including a housing, an isolated fluid conduit, a metering assembly, an electronics assembly, and a power assembly. An electronic device can be wirelessly connected to the metering device so as to quantify the fluid that is passing through the isolated fluid conduit. Alternatively, this can be performed by the electronics assembly and then transmitted to the electronic device. Portable spraying apparatuses are also disclosed and can include the fluid metering device. In example embodiments, other data can be captured and/or calculated such as sprayer locations, sprayed locations, type of fluid sprayed, images of the intended-to-be-sprayed subject, and/or other information pertinent as desired. In some example embodiments, the electronic device in combination with the fluid metering device can predict the chances of volatilization of the fluid based on specific environmental conditions and the fluid temperature. Finally, the sprayer and sprayed locations can be overlayed onto a map.