Abstract: A falling piston viscometer which includes a measuring bushing and a piston configured to be slidably receivable inside the measuring bushing is provided herein. More specifically, the circumferential edge of first section of the piston in the described falling piston assembly is modified to allow for decreased friction and sensitivity. A lifting mechanism, in communication with the piston and piston rod, raises the piston to an upper piston position within the measuring bushing, upon instruction from a controller. Upon the piston being lifted, fluid is drawn into the measuring bushing. The controller is configured to maintain the piston in a raised position for a pre-programmed time, after which, the controller allows the piston to fall, by the force of gravity.
Abstract: An instrument for use with fluid which includes a mixing element, and a container to hold the fluid to be mixed, characterised in that the mixing element includes a sensor that assists to measure a parameter of fluid.
Abstract: A novel configuration for a falling body viscometer using an electromagnetic induction sensor, wherein the time at which a falling body passes through the electromagnetic induction sensor can be specified with enhanced accuracy. This enables the falling speed of the falling body and in turn the viscosity of a fluid to be measured with increased accuracy. A falling body viscometer is provided with a first pair of coils located at the outer periphery of a measuring container so as to be separated from each other in the vertical direction, and also with a second pair of coils located at the outer periphery of the measuring container so as to be separated from each other in the vertical direction and to be located below the first coil pair, a specified distance away therefrom.
Abstract: The present invention is directed to mixers for viscometers and methods of using the same. Such inventions are applicable, for example, to industrial processes such as printing. One embodiment of the invention is directed to a viscosity control system including a viscosity sensor, a mixing element, a shaft fixedly attached to the mixing element, and an actuator interfacing with the viscosity sensor and the shaft. The annular mixing element is oscillatable about an axis lying in a plane tangent to a point on a wall of the mixing element. The shaft is centered about the axis. The actuator receives a signal from the viscosity sensor and rotates the shaft and the mixing element in an oscillating manner about the axis. In some embodiments, the shaft rotates through an angle of less than 360 degrees.
Abstract: A system for determining acceptability of torsional dampers for service in a machine system includes a fixture, an ultrasonic scanner and an indicating device configured to indicate at least one of acceptability and unacceptability of a torsional damper based upon receipt of a signal from the scanner. A nondestructive testing method for a torsional vibration damper includes scanning a torsional vibration damper with ultrasonic energy, and determining a test value for the damper indicative of a viscosity of fluid sealed within a housing of the damper based on receiving transmitted ultrasonic energy. Receipt of ultrasonic energy may be used to determine the flow rate of fluid within the damper by indicating a time for fluid to flow to fill a void within the damper. The system and method may be implemented in a remanufacturing or salvaging process for torsional vibration dampers.
July 3, 2007
Date of Patent:
July 6, 2010
Linxiao Yu, Douglas A. Rebinsky, Dong Fei
Abstract: An apparatus and process for visual observation and measurement of aggregated, granular and floating or suspended particles samples, which are gravitationally separated is disclosed. The first part of apparatus is the horizontally focused binocular microscope with vertical positioning. The second part of the apparatus is the revolving test tube holder with vertical positioning and rubber ring for soft tube position fixing. The process is consisting in horizontal focusing on the visual sample analyzing it in liquid. The difference from conventional process of sample analyzing is that in vertical position the gravitationally separated fractions of the sample will be not disturbed during the analysis and study of the sample. This will make possible both to study the micro-granulometry samples under horizontally focused binocular microscope and to use different liquids for gravitational separation of particles and granules without contaminating the environments and degrading working conditions.
Abstract: A liquid measurement apparatus is configured to measure an amount of liquid flowing from a measured object. The apparatus includes a passage member having a measurement passage being connected to the measured object at one end. The measurement passage is filled with liquid. The apparatus further includes a closed vessel, which is connected to an other end of the measurement passage and filled with saturated vapor of the liquid. The apparatus further includes an analyzer. The liquid filled in the measurement passage contains a bubble, which is movable in accordance with change in amount of the liquid in the measurement passage. The analyzer is configured to calculate a travel distance of the bubble and configured to measure the amount of the liquid flowing from the measured object based on the calculated travel distance.
Abstract: An apparatus and method is described for measuring properties of bubbles from which certain physical characteristics of the liquid in which the bubbles are generated can be determined. The evolution of a bubble includes (1) formation and growth at a nozzle disposed within the liquid through which a gas is flowed, or formation and growth as a result of cavitation in the liquid from the application of focused acoustic energy to a location within the liquid; (2) detachment and resonance; and (3) rise towards terminal velocity. Measurements of the resonance frequency, the shape oscillation frequency and the terminal velocity of the bubble allow the determination of the density and surface tension of the liquid and the radius of the bubble.
Abstract: An apparatus and method for determining viscosity of a low viscous fluid. A narrow tube samples a fluid sample. The apparatus or capillary viscometer determines viscosity within average relative deviation of less than 2% over a range of viscosity greater than two decades by mass flow rate. The apparatus includes a glass capillary viscometer with thermal jacket, balance with serial interface, and software for computer interface.
Abstract: A viscosity sensor operates by measuring the time taken for a piston to fall within the measuring chamber of a calibrated tube immersed in a bath, and an apparatus comprising the sensor is used for the continuous control of a quenching bath. A cam or an equivalent mechanism is used to lift a mobile assembly having a sensor in its upper part and a piston in its lower part. The sensor detects the passage of a pair of shoulders and passes the data on to a regulator for further processing.