The present invention includes: a cell holding body that holds a measurement cell housing a measurement sample and a dispersion medium; a cover attached to the cell holding body so as to cover the measurement cell; a rotation section that rotates the cell holding body and applies centrifugal force to the measurement cell; a light source that is provided on one side of a rotation passage region of the measurement cell and irradiates the cell with light; a photodetector that is provided on another side of the rotation passage region of the measurement cell and detects light transmitted through the cell; and a particle diameter distribution arithmetic section that acquires a light intensity signal from the photodetector and calculates a particle diameter distribution. The rotation passage region of the cover is located inside an optical path of light passing between the light source and the photodetector.

An automatic measurement system for Sludge settling Velocity comprises a sampling and shooting module, a data service module, data processing module, and a measurement and analysis module. The sampling and shooting module is configured to collect samples and to obtain a test images of samples. The data processing module is configured to collect and store process data. The measurement and analysis module is configured to obtain the sedimentation ratios of samples according to test images. The sludge activity is analyzed according to the sedimentation ratios. When the sludge activity is abnormal, the process data are obtained from data processing module, and the process analysis data are obtained according to the data and the sludge activity analysis results. The automatic measurement system can avoid errors caused by manual measurement and improve accuracy and efficiency of detection and can avoid the problems of untimely detection.

An automatic measurement system for Sludge settling Velocity comprises a sampling and shooting module, a data service module, data processing module, and a measurement and analysis module. The sampling and shooting module is configured to collect samples and to obtain a test images of samples. The data processing module is configured to collect and store process data. The measurement and analysis module is configured to obtain the sedimentation ratios of samples according to test images. The sludge activity is analyzed according to the sedimentation ratios. When the sludge activity is abnormal, the process data are obtained from data processing module, and the process analysis data are obtained according to the data and the sludge activity analysis results. The automatic measurement system can avoid errors caused by manual measurement and improve accuracy and efficiency of detection and can avoid the problems of untimely detection.

A method for processing particles contained in a liquid biological sample is presented. The method uses a rotatable vessel for processing particles contained in a liquid biological sample. The rotatable vessel has a longitudinal axis about which the vessel is rotatable, an upper portion comprising a top opening for receiving the liquid comprising the particles, a lower portion for holding the liquid while the rotatable vessel is resting, the lower portion comprising a bottom, and an intermediate portion located between the upper portion and the lower portion, the intermediate portion comprising a lateral collection chamber for holding the liquid while the rotatable vessel is rotating. The method employs dedicated acceleration and deceleration profiles for sedimentation and re-suspension of the particles of interest.

A high-temperature and high-pressure equipment and method for microscopic visual sulfur deposit seepage test is provided by the present disclosure, the equipment comprises an injection system, a high-temperature and high-pressure visual kettle, a pressure supply system, a data acquisition and analysis system, a fluid recovery system, and an injection branch pipe; the injection system comprises an ISCo micro-injection pump, an intermediate container, a thermostatic heating oven and a pressure meter; the intermediate container is arranged in the thermostatic heating oven, the ISCo micro-injection pump is connected to the intermediate container; the data acquisition and analysis system comprises a microscope, a high-brightness light source and a computer; the pressure supply system comprises an annular pressure tracking pump, a back pressure pump, a back pressure valve and a pressure gauge; the fluid recovery system comprises a wide neck flask with rubber stopper, a balance, a flowmeter and an exhaust gas absorber tank.

A high-temperature and high-pressure equipment and method for microscopic visual sulfur deposit seepage test is provided by the present disclosure, the equipment comprises an injection system, a high-temperature and high-pressure visual kettle, a pressure supply system, a data acquisition and analysis system, a fluid recovery system, and an injection branch pipe; the injection system comprises an ISCo micro-injection pump, an intermediate container, a thermostatic heating oven and a pressure meter; the intermediate container is arranged in the thermostatic heating oven, the ISCo micro-injection pump is connected to the intermediate container; the data acquisition and analysis system comprises a microscope, a high-brightness light source and a computer; the pressure supply system comprises an annular pressure tracking pump, a back pressure pump, a back pressure valve and a pressure gauge; the fluid recovery system comprises a wide neck flask with rubber stopper, a balance, a flowmeter and an exhaust gas absorber tank.

Sag propensity of a fluid can be determined by applying an oscillatory strain at an amplitude in excess of a linear region and below a yield strain of the drilling fluid. This may include use of medium amplitude oscillatory shear (MAOS), from which an elastic modulus of the fluid is determined. The elastic modulus may be determined over time, from which a time to reach maximum elastic modulus can be determined. The time to reach maximum elastic modulus is then converted or correlated to a drilling fluid sag propensity for the drilling fluid either in absolute terms or in relation to base or comparison fluids. Such an evaluation can be performed using a torsional resonance device in which the oscillatory strain is controllable so as to be maintained relatively constant during the measurement.

An apparatus for determining a vertical position of at least one interface between a first component and at least one second component, the components comprised as different layers in a sample container. The apparatus comprises a first sensing unit and a first light detector configured to generate a first sensing signal, a second sensing unit comprising a second light detector configured to generate a second sensing signal, a driving unit configured to move the sample container, a position sensing unit configured to output a position sensing signal indicative of a vertical position of the sample container, a vertical position determining unit configured to match the first and the second sensing signal such that first and the second sensing signal correspond to identical vertical positions, and to determine the vertical position of the at least one interface in response to the matched sensing signals and the position sensing signal.

An object of the present claimed invention is to improve cell cooling performance, keep a temperature of a dispersion medium constant, and improve measurement accuracy. The particle size distribution measuring device of this invention comprises a cell holding body 31 that holds a cell 2 housing a measurement sample and that is rotated by a motor 322, a case (C) having a housing space (S) for rotatably housing the cell holding body 31, and a cooling mechanism 8 for cooling the cell 2. The cooling mechanism 8 comprises a cooler 81, and a supply channel 82 that supplies a gas that has been cooled by the cooler 81 to the housing space (S).

The present invention relates to an apparatus for salt precipitation and scaling tests, which comprises two reagent storage tanks (2, 3), a reagent mixing module (6), induction period measurement modules (7, 12), an ultrasound-assisted precipitation module (9) and a scaling module with heat exchanger (13). From the apparatus, it is possible to carry out tests with the purpose of investigating the influence of parameters such as flow rate, temperature and concentration on salt precipitation and scaling. It is further possible to carry out tests under the action of ultrasound, since it promotes acceleration of chemical reactions.