A system for characterizing at least one particle from a fluid sample is disclosed. The system includes a filter disposed upstream of an outlet, and a luminaire configured to illuminate the at least one particle at an oblique angle. An imaging device is configured to capture and process images of the illuminated at least one particle as it rests on the filter for characterizing the at least one particle. A system for characterizing at least one particle using bright field illumination is also disclosed. A method for characterizing particulates in a fluid sample using at least one of oblique angle and bright field illumination is also disclosed.

Data relating to an amount of contaminant in a fluid is obtained from a contaminant detection device. Aeration detection raw voltage data output and particle detection raw voltage data output from the contaminate detection device are received at an external data processing system separate and independent from the contaminate detection device. The aeration detection raw voltage data output and particle detection raw voltage data output are analyzed and cleaned to determine real time information on the amount of air bubbles and solid contaminate particles in the fluid, and then supplied to an onboard monitoring and controlling module of a machine for controlling one or more operations onboard the machine based on the determined amount of solid contaminate particles.

In an approach for controlling a multiphase flow configured to create a plurality of particles, a processor obtains images of a plurality of particles in a multiphase flow. A processor provides the images to a neural network adapted to determine a distribution of a spatial property of the plurality of particles from the provided images. A processor determines the distribution of the spatial property of the plurality of particles in the multiphase flow, based on the provided images, using the neural network. A processor controls the multiphase flow based on the determined distribution.

Means for analysis of a moving slurry of solid particles in a liquid medium that comprises: causing the slurry to flow with fully developed turbulence in a vertical pipe such that the flowing slurry fills the entire cross-section of the pipe; providing a transparent window in a wall of the pipe, said window being flush with an inside of the pipe; emitting light from a light source through the window, onto the flowing slurry inside the pipe in an examination zone; taking a plurality of individual measurements of individual solid particles in the flowing slurry by collecting light returned from the examination zone; collating the results of a statistically significant number of the individual measurements to provide a characteristic of the flowing slurry, as a whole.

A system for detecting bubbles within a liquid flowing in an interior of a pipe. The system includes a system for detecting bubbles within a liquid flowing in an interior of a pipe. The system includes a pressure sensor affixed to the interior of the pipe and a microcontroller communicating with the pressure sensor. The pressure sensor gathers pressure readings of the liquid flowing in the pipe at the location of the pressure sensor and sends the gathered pressure readings to the microprocessor. A pressure differential range over a specific period of time is selected which when exceeded, indicates the presence of bubbles in the liquid flowing in the pipe. The pressure differential range is utilized by the microcontroller to determine the presence of bubbles in the fluid flowing through the pipe. The microcontroller determines a presence of bubbles in the liquid based on an exceedance of the pressure differential range from pressure readings gathered by the pressure sensor over the selected period of time.

Embodiments herein relate to systems for detecting air bubbles in fluids. In an embodiment, a fluid system aeration detector is included having an optical air bubble sensor. The optical air bubble sensor can include a light source, a light detector, and a sensor controller. The sensor controller can be in signal communication with the light detector and can be configured to detect air bubbles based on the signals received from the light detector. The sensor controller can further be configured to estimate an amount of aeration of a fluid based on the detected air bubbles. Other embodiments are also included herein.

The present disclosure provides apparatuses, systems, and methods for performing particle analysis through flow cytometry at comparatively high event rates and for gathering high resolution images of particles.

A method for observing a sample by lensless imaging, in which a sample is positioned between a laser diode and an image sensor, the laser diode being supplied with a supply current whose intensity is less than or equal to a critical value. This critical intensity is determined during preliminary operations, during which the intensity is initially greater than a laser threshold of the diode. By observing the image formed at the image sensor, the intensity is decreased until an attenuation of the interference images on the formed image is observed, the critical intensity corresponding to the intensity at which this attenuation is optimum.

Quantifying nanobubbles in solution includes combining an indicator with a fluid comprising nanobubbles to yield a first solution, bursting the nanobubbles in the first solution to yield a second solution, and assessing a difference between the first solution and the second solution to yield a concentration of the nanobubbles in the first solution, a concentration of reactive oxygen species in the first solution or the second solution, or both.

A system includes a light source, a transparent container, a detector, and a processor. The light source emits light. Liquid flows from one end of the transparent container to another end of the transparent container. The liquid comprises a first and a component. One or more droplets containing the second component are formed within the transparent container as the liquid flows from the one end to the another end of the transparent container. The detector measures light intensities from the transparent container being illuminated. The one or more droplets cast shadows on the detector. A light intensity associated with a portion of the liquid that includes the one or more droplets is different from a second light intensity associated with another portion of the liquid that does not include the one or more droplets. The processor processes the measured light intensities to determine phase entrainment metrics associated with the liquid.