304 results about "Densitometer" patented technology

A measurement device is provided that determines fluid properties from vibration frequencies of a sample cavity. In one embodiment, the measurement device includes a sample flow tube, vibration source and detector mounted on the tube, and a measurement module. The sample flow tube receives a flow of sample fluid for characterization. The measurement module employs the vibration sources to generate vibrations in the tube. The measurement module combines the signals from the vibration detector on the tube to determine properties of the sample fluid, such as density, viscosity, compressibility, water fraction, and bubble size. The measurement module may further detect certain flow patterns such as slug flow, for example. To measure the sample fluid density, the measurement module determines the resonant frequency of the sample flow tube. The density can then be calculated according to a formula that compensates for the temperature and pressure of the system.

Devices, methods and systems for determining one or more properties of at least one fluid sample. A tube configured to receive the at least one fluid sample wherein the tube is placed in a pressure housing. Further, an excitation source configured to generate vibration of the tube whereby a circulation of an electrical current along a portion of the tube is subjected to at least one magnetic field produced by at least one magnet. Further still, at least one vibration sensor that converts vibrations of the tube into a measurement signal. Finally, a processor that receives the measurement signal determines a resonant frequency from the measurement signal using a frequency measuring device to determine a property of the one or more properties of the at least one sample fluid.

A printing system is linearized automatically using measurements made with a simple optical sensor, such as a line sensor, that is onboard the system. The printing system itself is for forming images on plural printing media. Because the optical sensor is not a calorimeter or even a true densitometer, the sensor requires calibration, preferably based upon measurements using real inks. In the past it has been considered a requirement that such calibration be performed separately using each of the print media that was to be used for printing images. Linearization according to the invention, however, refers to a single calibration of the sensor, that calibration being used in common for essentially all media—even though the single calibration is performed with respect to exclusively a single one of the plural media.

A fuel delivery system uses a volumetric flow sensor and a densiometer to measure a mass flow rate of the fuel. A densiometer may be a coriolis mass flow sensor etched into a small circuit chip. As fuel flows past the densiometer a density of the fuel and characteristic slope as a function of temperature is determined. At least one temperature sensor is also located on the circuit chip to provide accurate temperature of the fuel to correspond to the fuel density reading. Piezoelectric crystals in the volumetric flow sensor generate and receive a sound wave. By analyzing the sound wave signals the volumetric flow rate of fluid through the volumetric flow sensor can be calculated. At least one temperature sensor is also placed on the volumetric flow sensor to correct for any thermal expansion of an inner diameter of the volumetric flow sensor and for final mass flow calculation. The density and temperature information from the densiometer and the volumetric flow and temperature information from the volumetric flow sensor are used to determine the density of the fuel at the volumetric flow sensor. By using the density calculated at the volumetric flow sensor and using the volumetric flow information an accurate mass flow rate of the fuel at the volumetric flow sensor can be calculated.

A picture color tone controlling method and apparatus for a printing press is disclosed which can readily and rapidly eliminate a positional displacement between a plate making image and an actual machine image and can appropriately perform color tone control in which an IRGB densitometer is used. A plate making picture position obtained from plate making data is moved so that a positional displacement between the plate making picture position and an actual picture position obtained from a result of actual printing. A target color mixture halftone density for each ink supplying unit width when a printing picture is divided with an ink supplying unit width of an ink supplying apparatus is set. An IRGB densitometer is used to measure the actual color mixture halftone density for each ink supplying unit width of an actually printed sheet obtained by printing. The color mixture halftone densities are individually converted into halftone dot area ratios and further into monochromatic halftone densities. Then, the Yule-Nielsen expression or the like is used to determine a solid density deviation corresponding to a deviation between the target monochromatic halftone density and the actual monochromatic halftone density, and the ink supplying amount is adjusted for each ink supplying unit width in response to the solid density deviation.

A sensor apparatus for providing two sensing operations within a thermal printer includes a densitometer with at least one light source that discriminates color and that is positioned in a first position for sensing donor patches within the thermal printer; the densitometer while in a second position provides signals from printed receiver media for internal color calibration of the thermal printer. At least one reflector directs light from the light source to the densitometer through a donor web when the densitometer is in the first position; and a switchable device repositions the densitometer from either the first position or the second position.

The invention discloses a non-destructive identification method for a material of an integral coil of a distribution transformer. The non-destructive identification method based on the difference of attenuation coefficients of copper, steel and aluminum to X rays includes photographing the distribution transformer in a integral state by the X rays; measuring blackness of photographed negative films of the rays by a black and white densitometer; inputting measured blackness values into a computer; and computing X-ray attenuation coefficient and transillumination thickness curves, which are stored in the computer, of the copper, the steel and the aluminum corresponding to different X-ray tubes and comparing the X-ray attenuation coefficient and transillumination thickness curves with a characteristic curve of the industrial ray films, and judging whether the winding coil of the distribution transformer is made of the aluminum or the copper.

Methods and system are described for monitoring the composition of a cement slurry or wellbore service fluid, including one or more feeder units for solid particulate material; one or more mixing or blending units adapted to receive material from the feeder units; one or more outlet tubes to direct the cement slurry or wellbore service fluid to a storage facility or into a wellbore; and a control unit connected to at least one densitometer to monitor the density of the cement slurry or wellbore service fluid; wherein the densitometer comprises a generator free of radioactive material and capable of generating high-energy photons based on accelerating or decelerating electrons.

A method and apparatus are provided for determining the gas flow rate of a gas-liquid mixture which has a gas volume fraction (GVF) of at least 85% and which is conveyed along a conduit. The conduit is fitted with a differential pressure flow meter and a fluid densitometer. The method comprises: measuring the pressure difference across the differential pressure flow meter and measuring the density of the mixture using the densitometer; estimating the GVF of the mixture from the measured density; and calculating the gas flow rate from the measured pressure difference and measured is used in the calculation to correct the gas flow rate for the high GVF value of the mixture.

The invention discloses a system for automatically and quickly distributing drilling liquid. The system comprises a programmable logic controller (PLC) automatic control system, an air source system, a storage system, a dry mixing system and a slurry mixing system; the air source system comprises an air storage tank, a large-scale air compressor, a dry cooling machine, a small-scale air compressor and an air supply pipeline which are uniformly distributed on a forced draught fan package; the storage system comprises a raw material storage tank, an additive storage tank, a dust removal tank, weighing sensors which are arranged at bottoms of the raw material storage tank and the additive storage tank, a raw material gas conveying pipeline and a dust removal pipeline; the dry mixing system comprises a primary mixing tank and a batch mixing tank which are arranged on a dry mixing package, weighing sensors which are arranged at bottoms of the primary mixing tank and the batch mixing tank, a primary mixing pipeline, a batch mixing pipeline, and a primary mixing tank and batch mixing tank mixing circulation pipeline; and the slurry mixing system comprises a stirring pool, a stirrer which is arranged on the middle part of the stirring pool, a diffusion groove which is formed on one side of the stirrer, a high-energy mixer which is arranged on the upper part of the diffusion groove, a slurry mixing pipeline, a slurry conveying pipeline and a densitometer which is arranged on the slurry conveying pipeline; and all the systems are matched to realize automatic slurry distribution.

The present invention provides a etching solution blending device which is used in a semiconductor manufacturing works or flat-panel display manufacturing works and is capable of constantly blending nitric acid concentration, moisture concentration, phosphoric acid concentration and acetic acid concentration of the etching solution. The device comprises: an electric conductivity meter for detecting the electric conductivity of the dilution formed by adding pure water into etching solution in a blending tank or an absorption spectrophotometer for detecting the nitric acid concentration of the etching solution, an absorption spectrophotometer for detecting the moisture concentration of the etching solution, an absorption spectrophotometer or a densitometer for detecting the phosphoric acid concentration of the nitric acid, a component concentration operation mechanism for operating the component concentration of the etching solution by multi-component operation method according to the electric conductivity value of the nitric acid concentration conductivity meter, the absorbency value of the moisture concentration absorption spectrophotometer, and the absorbency value of the phosphoric acid concentration absorption spectrophotometer or the density value of the densitometer, and a replenishing mechanism for replenishing at least one of acid original solution, mixed acid original solution and pure water into the blending tank.

A sensor for measuring a density of a fluid is provided. The sensor (200) includes a flow tube (104) for receiving the fluid and a vibration driver (102) coupled to the flow tube, the vibration driver configured to drive the flow tube to vibrate. The sensor also includes a vibration detector (106) coupled to the flow tube, the vibration detector detecting characteristics related to the vibrating flow tube, and a distributed temperature sensor (202) coupled to the flow tube, the distributed temperature sensor measuring a temperature of the flow tube as the flow tube vibrates. The sensor further includes measurement circuitry (110) coupled to the vibration detector and the distributed temperature sensor, the measurement circuitry determining a density of the fluid from the detected characteristics related to the vibrating flow tube and the measured temperature of the flow tube.

Methods for automated uniformity assessment and modification of image non-uniformities using an image measurement device capable of determining image reflectance and/or transmitter as a function of position, such as a spectrophotometer, a calorimeter, and/or a densitometer. One or more of these devices scan an image on a substrate, such as a sheet, thereby generating data representing image characteristics, such as, for example, image non-uniformity. The sheet may contain a reference/test pattern including one column, strip or patch intended to have a uniform density. This data generated by the device after the scan of the substrate is analyzed with signal processing algorithms for image characteristics assessment, including image spatial uniformity and compared to reference image characteristics including image spatial uniformity. An image modification profile may be generated to be applied to a marking system to thereby alter subsequent image data and improve image spatial uniformity of the marking system.

An instrument for determining fluid properties is provided. The instrument (300) includes a tube (304) receiving the fluid, a single magnet (302) attached to the tube, and a single coil (306) wound around the single magnet. The single coil is coupled to a pulse current source (312) and receives a pulse current that creates a magnetic field in the single coil, the created magnetic field interacting with the single magnet to drive the tube to vibrate. The instrument further includes a detector (306) coupled to the tube, wherein the detector is coupled to measurement circuitry (310) and detects properties of the tube as it vibrates, and the measurement circuitry determines the fluid properties based on the detected properties. The instrument also includes a housing (314) enclosing the tube, the single magnet, and the single coil wound around the single magnet.

A calibration for a scanner, which is used as a densitometer, is carried out always with high accuracy. More specifically, an image processing method of generating a conversion condition for a scanner which is used for reading an image and generating image data, is provided. The method including the steps of: obtaining a reading property of an object scanner based on image data obtained by that the object scanner reads a chart, and generating the conversion condition for the object scanner based on the reading property of the object scanner, a previously prepared reading property of a standard scanner and a previously prepared brightness-density conversion condition for the standard scanner.

The invention provides a full-automatic well cementation cement slurry quality controlling method and a mixing system. The method comprises the following steps: the density value is determined according to the well cementation required cement slurry; and a control system automatically controls the inlet amount of cement plaster and clean water through a cement plaster proportional control valve and a clean water proportional control valve respectively according to the determined density value. The mixing system comprises a controller, wherein the controller is connected with a control panel, a densitometer, a clean water flow meter, a piston pump flow meter, the cement plaster proportional control valve and the clean water proportional control valve; the cement plaster proportional control valve is connected with a cement plaster adjusting valve; the clean water proportional control valve is connected with a clean water adjusting valve; and the densitometer feeds a collected cement plaster density signal back to the controller, and the cement plaster proportional control valve and the clean water proportional control valve are controlled by the controller. The full-automatic well cementation cement slurry quality controlling method can realize full automatic control on a slurry mixing process in the well cementation operation, so the slurry mixing efficiency and the well cementation cement slurry quality can be improved.