A sprayer control system includes a plurality of smart nozzles each having at least one control valve with a valve operator, an electronic control unit for the valve operator, and one or more spray nozzles. The at least one control valve and the ECU control a flow rate of liquid agricultural product through the nozzles. A duty cycle modulator is in communication with the ECU and generates an applied duty cycle for the at least one control valve. The duty cycle modulator includes a specified duty cycle input having a specified duty cycle and a pressure monitor associated with the at least one control valve. A pressure comparator compares the valve pressure determined with the pressure monitor with a system pressure and generates a pressure error. An applied duty cycle generator generates the applied duty cycle based on the specified duty cycle modified by the pressure error.

A work machine can include a frame; a spray system couple to the frame and including a spray bar having a plurality of nozzles; a pressure sensor to detect a pressure of a liquid within the spray bar; and a controller to determine whether the detected pressure of the liquid within the spray bar has exceeded a pre-determined pressure threshold.

A nozzle include a first portion, a second portion joined to the first portion, and a third portion joined to the second portion. The first portion includes a first inner wall surface and a first flow channel including a first inlet and a first outlet. The second portion includes a second inner wall surface and a second flow channel including a second inlet having an inner diameter less than an inner diameter of the first outlet and a second outlet. The third portion includes a third inner wall surface and a third flow channel including a third inlet having an inner diameter greater than the inner diameter of the second outlet and a third outlet. The third flow channel includes a diameter-decreasing section having an inner diameter that gradually decreases and a straight section having an inner diameter less than the inner diameter of the second outlet and constant.

A system for generating and dispensing plural component materials includes a controller operatively connected to dispense valves and return valves. The return valves are in respective open states to allow constituent materials to circulate back to a source and are in respective closed states to block circulation. The dispense valves are in respective open states to allow mixing of the constituent materials to form the plural component material and in respective closed states to prevent generation and dispense. The controller implements a delay between closing the return valves and opening the dispense valves to build pressure in the system prior to generating and dispensing the plural component material.

Provided is a sample pretreatment device configured to apply, to the surface of a sample, a solution in which a predetermined substance is dissolved or dispersed. In order to properly and efficiently unclog a nozzle due to the deposition of the crystal of a matrix substance, the device includes a spray unit (3) including a solution tube (32) for the solution to pass through, a gas tube (33) for a spray gas to pass through, and a nozzle part (30) configured to spray the solution arriving at the terminal end of the solution tube by ejection of the spray gas through the gas tube, as well as a cleaning liquid supplier (4, 41) configured to put a cleaning liquid on an opening of the nozzle part from outside the spray unit.

A spraying system including a boom having a first end, a middle, and a second end; a plurality of nozzles disposed on the boom; a plurality of cameras (70) disposed on the boom and positioned to each view a subset of the plurality of nozzles; a plurality of lights disposed on the boom and positioned to each illuminate a subset of the plurality of nozzles.

A bead flow sensor module includes a housing, a beam, and a sensor. The beam extends into a flow channel of the housing through which a flow of beads and compressed air flows. The sensor outputs a signal indicative of bead impacts on the beam. A system incorporating the bead flow sensor module includes a compressed air source, a bead hopper, and a bead dispenser. The compressed air source delivers a flow of compressed air to the bead hopper. A flow of beads carried by the compressed air discharges from the bead hopper along a flow pathway connecting the bead hopper to the bead dispenser. The bead flow sensor module positioned along the flow pathway outputs the signal from which a bead flow volume through the bead dispenser is determined.

In one embodiment, a remote monitoring system for a fluid applicator system is disclosed. The fluid applicator system is disposed to heat and pump spray fluid, and to transmit reports including sensed temperatures, pressures, and other operational parameters of the fluid applicator system via a wireless network. The remote monitoring system comprises a data storage server, and an end user interface. The data storage server is configured to receive and archive the reports. The end user interface is configured to provide a graphical user interface based on the reports. The graphical user interface illustrates a status of the fluid handling system, sensed and commanded temperatures of the fluid handling system, sensed and commanded pressures of the fluid handling system, and usage statistics of the fluid handling system.

Various embodiments of a spray measurement system having a jig device that allows measuring spray output of one or more spray nozzles and determine spray distribution patterns of the spray nozzles are disclosed.

A dispenser includes: a plunger; a dispensing portion configured to dispense and suction liquid in response to an advance and a retraction of a distal end surface of the plunger along an axial line. The dispensing portion includes: a surrounding portion surrounding the distal end surface of the plunger about the axial line to define an accommodation chamber for accommodate the liquid to be dispensed; and an end portion facing the distal end surface of the plunger. The surrounding portion includes an inlet opening into the accommodation chamber to receive the liquid into the accommodation chamber. A distance from the inlet to the end portion is less than or equal to half of a maximum stroke of the distal end surface of the plunger.