Class / Patent application number | Description | Number of patent applications / Date published |
073640530 | By vibration | 52 |
20090044608 | Method And Apparatus For Measuring Particle Characteristics through Mass Detection - Method for measuring a target particle property. A suspended microchannel resonator is calibrated to determine the relationship between a detected mass and a resonance frequency shift of the resonator. The target particle is suspended in a fluid and introduced into the resonator, and the resonator frequency shift due to the particle is measured. Target particle mass is calculated from the resonator frequency shift, the target particle density, and the fluid density. A target particle property such as size or volume is determined from the calculated target particle mass. | 02-19-2009 |
20090100914 | CARTRIDGE FOR A FLUID SAMPLE ANALYSER - A cartridge for apparatus for analysing a sample comprising a fluid as a flow cell for receiving the sample. The cell is formed from a substantially rigid support surface ( | 04-23-2009 |
20090120171 | VIBRATING WIRE VISCOSITY SENSOR - A method and apparatus for providing, e.g., identifying or determining, at least one parameter of a fluid moving through a fluid channel using a vibrating wire in contact with the fluid moving through the fluid channel that is clamped under tension. The vibrating wire is actuated by an actuating device capable of displacing the vibrating wire from an initial position. An interpretation element further is utilized to provide a parameter of the fluid moving through the fluid channel based upon data from the vibrating wire following actuation by the actuation element. | 05-14-2009 |
20090205411 | Device for Determining and/or Monitoring a Process Variable of a Medium - An apparatus for determining and/or monitoring at least one process variable of a medium. The apparatus includes: at least one mechanically oscillatable unit; a driving/receiving unit, which, starting with an electric, excitation signal, excites the mechanically oscillatable unit to execute mechanical oscillations, and which receives the mechanical oscillations of the mechanically oscillatable unit and converts them into an electric, received signal; and an electronics unit, which, starting with the electric, received signal, generates the electric, excitation signal and sends it to the driving/receiving unit. The electronics unit is embodied in such a way that it generates the excitation signal, such that a predeterminable phase difference exists between the excitation signal and the received signal. Present in the electronics unit is at least one all-pass filter for tuning the phase difference. | 08-20-2009 |
20090211347 | Method and Apparatus for Ascertaining and/or Monitoring a Process Variable - A method for ascertaining and/or monitoring a process variable, wherein a time-limited, exciting signal, which is described by at least one desired quantity, or by a desired signal form, is applied to a first piezoelectric element, or to a first polarized zone of a piezoelectric element. The response signal, which is described by at least one actual quantity, or actual signal form, corresponding, respectively, to the desired quantity, or desired signal form, is registered by a second piezoelectric element, or by a second polarized zone of the piezoelectric element, wherein the actual quantity, or the actual signal form, of the response signal and the desired quantity, or the designed signal form, of the response signal are compared with one another, wherein, in the case of a deviation of the actual quantity, or actual signal form, of the response signal from the desired quantity, or desired signal form, of the response signal, the exciting signal is so modified, that the actual quantity, or actual signal form, transmitted from the first piezoelectric element, or from the first zone of the piezoelectric element, is at least approximately equal to the desired quantity, or desired signal form, of the response signal. On the basis of the ultrasonic measuring signal, which is describable by the defined desired quantity, or the defined, desired signal form, the process variable is ascertained via a sound-entrainment method or via an echo method. | 08-27-2009 |
20090282902 | BIO SURFACE ACOUSTIC WAVE (SAW) RESONATOR AMPLIFICATION FOR DETECTION OF A TARGET ANALYTE - The present invention relates generally to a signal amplification method for a SAW resonator microsensor for analyzing test samples, containing target analyte including proteins and nucleic acids. The invention relates to at least one surface acoustic wave resonator unit comprising a plurality of three-dimensional interdigital transducer electrode (IDTE) and reflector micro channels located on a piezoelectric substrate surface. The invention further relates to a change of solid/liquid volume ratio in said three-dimensional micro channels; said changes of the liquid/solid volume ratio can be directed correlated to the target analyte concentration in a test sample. | 11-19-2009 |
20090301176 | Microelectromechanical System Comprising a Deformable Portion and a Stress Sensor - A microelectromechanical system comprises a deformable portion and at least one stress sensor fixedly attached to the deformable portion. The sensor itself comprises a base portion and a shunt portion juxtaposed on the deformable portion, and connections arranged to detect a change of a distribution of an electric current in the base and shunt portions. Such a system is suitable for many applications, in particular for forming a portion of an arm of an atomic force microscope or for entering into the constitution of a bio sensor. | 12-10-2009 |
20090320574 | IN-LIQUID-SUBSTANCE DETECTION SENSOR - An in-liquid-substance detection sensor that achieves size reduction and detection accuracy improvement includes a piezoelectric substrate, at least two SAW devices provided on one major surface of the piezoelectric substrate and each having at least one IDT electrode defining a sensing portion, outer electrodes provided on the other major surface of the piezoelectric substrate and electrically connected to the SAW devices through vias extending through the piezoelectric substrate, a channel-defining member provided on the one major surface of the piezoelectric substrate so as to surround the SAW devices and a region connecting the SAW devices to each other, thereby defining sidewalls of a channel, and a protective member bonded to the one major surface of the piezoelectric substrate with the channel-defining member interposed therebetween, thereby sealing the channel, the protective member having at least two through holes communicating with the channel. | 12-31-2009 |
20100011845 | METHODS AND SYSTEMS FOR MODULATING ACOUSTIC ENERGY DELIVERY - The present invention provides systems, methods, and devices for using acoustic energy. In some embodiments, a fluid bath may be provided in the system where the fluid bath quality may be monitored using acoustic energy. An assessment of fluid bath quality can be determined through a comparison that is made of an initial power signal of the acoustic energy with a reflected power signal of the acoustic energy. | 01-21-2010 |
20100095750 | Concentration Sensor and Concentration Detector - In a concentration sensor using a piezoelectric piece, for instance, a quartz piece in which the natural frequency is varied by adsorption of a sensing target, the object of the present invention is to make the concentration sensor applicable to various fluids to be measured different in viscosity while restricting consumption of the oscillation energy due to interelectrode capacitance, and to be able to cope with plural types of concentration sensors while using a common oscillation circuit. | 04-22-2010 |
20100095751 | SENSING DEVICE - An object of the present invention is to provide a sensing device capable of easily and collectively displaying, based on pieces of time-series data of frequencies of piezoelectric resonators obtained for each concentration of a substance to be absorbed in solutions, pieces of variation data of the frequencies for each concentration caused by an absorption of the substance to be absorbed, in a state of aligning absorption start points. | 04-22-2010 |
20100132438 | SYSTEM AND METHOD FOR THE AUTOMATED PROCESSING OF FLUIDS, METHOD FOR DETERMINING THE MATCHING OF OBJECTS - A system and method for the automated processing of fluids according to a process operation plan involving the use of preloaded objects, which are to be present in target object positions, are disclosed. The system includes: a processing area in which objects to be used for the processing of fluids are located; at least one ultrasonic sensor for determining the presence of objects by acoustical waves; a positioning device to which the ultrasonic sensor is fixed and which moves the ultrasonic sensor in at least one direction relative to the processing area; a control computer determining the presence of objects and determining if objects are present in target object positions in the processing area as defined by the process operation plan; a pipetting device for pipetting of fluids between cavities located in the processing area; and an analytical or pre-analytical processing device for processing of fluids located in the processing area. | 06-03-2010 |
20100132439 | SYSTEM AND METHOD FOR DETERMINING ATOMIZATION CHARACTERISTICS OF SPRAY LIQUIDS - A system and method for determining the atomization characteristics of fluids is disclosed. In one embodiment, a fluid is emitted through a nozzle at controlled conditions. Vibrations occurring within the nozzle are sensed while the fluid is being emitted. An atomization characteristic of the fluid is predicted using the sensed vibrations. In one embodiment, the sensed vibrations are converted into a spectral density that is used to calculate a vibration power spectrum. In one embodiment, the atomization characteristic is the droplet size of the fluid with respect to the controlled conditions, and the droplet size is predicted based on a relationship between a descriptive attribute of the fluid and the vibration power spectrum of the fluid. In one embodiment, the descriptive attribute is the volume median diameter of the fluid. | 06-03-2010 |
20100180673 | LIQUID ANALYSIS USING CAPACITATIVE MICROMACHINED ULTRASOUND TRANSDUCERS - A method for analyzing liquid samples may comprise applying a liquid to a cMUT device having a plurality of sensors, drying the plurality of sensors, electronically detecting an agent bound to each of the plurality of sensors, wherein the electrical circuit provides a sensor output responsive to a mechanical resonance frequency of the sensor, wherein the mechanical resonance frequency of the sensor is responsive to the binding of an agent to the functionalized membrane, and determining the mass of the agent bound to each of the plurality of sensors. | 07-22-2010 |
20100263437 | Quartz sensor and sensing device - To provide a quartz sensor capable of detecting a sensing target with high sensitivity also in measurement in a liquid phase in which a difference in Q values at the time of measurement in the liquid phase and in a vapor phase is small. In a quartz sensor | 10-21-2010 |
20100313636 | Sensing device and sensing method - To provide a sensing device and a sensing method that, by a simple method of liquid supply to first and second excitation electrodes, makes it possible to make a first oscillation area adsorb an adsorption substance that adsorbs a substance to be sensed in a sample solution and a blocking substance that prevents the adsorption of a substance and to make the electrode in a second oscillation area adsorb the blocking substance. By the supply of a solution containing the adsorption substance to a first liquid storage space | 12-16-2010 |
20100319439 | SURFACE ACOUSTIC WAVE SENSOR DEVICE AND METHOD OF CONTROLLING LIQUID USING THE SAME - A surface acoustic wave sensor device includes a main body and a liquid controller disposed external to the main body. The main body includes a sample chamber, a surface acoustic wave sensor connected to the sample chamber, a first disposal chamber connected to the surface acoustic wave sensor and channels connecting the sample chamber, the surface acoustic wave sensor and the first disposal chamber. The liquid controller controls flow of a sample through the main body. | 12-23-2010 |
20110041590 | SYSTEM AND METHOD FOR MEASURING OR MONITORING OF A LOW CONCENTRATION DISPERSED PHASE - Systems and methods are disclosed for measuring and/or monitoring concentrations of a dispersed phase in a fluid. A wettable surface may be used that is configured to be selectively wettable by the dispersed phase in the fluid being tested/monitored and the amount of or the rate of change of the wetting/deposition of the dispersed phase on the wettable surface is sensed and used to monitor the concentration of the dispersed phase. | 02-24-2011 |
20110048114 | MOLECULAR CONFORMATION BIOSENSING - Disclosed is a method of investigating the conformation of biomolecules or changes in the conformation of biomolecules as a result of an interaction, in which biomolecules from a sample of biomolecules are adhered discretely to the sensing surface of an acoustic wave sensor operating in a liquid, and a conformation parameter which is related to the conformation of the biomolecules from the said sample which are adhered discretely to the sensing surface, but substantially independent of the resulting change in mass loading of the sensing surface, is calculated from the resulting change in the output signals of the acoustic wave sensor. The conformation parameter may the acoustic ratio or a parameter which is directly related to the acoustic ratio. There is also disclosed a method of investigating changes in the conformation of biomolecules which are adhered discretely to the sensing surface of an acoustic wave sensor operating in a liquid, in response to an interaction with an agent, by calculating a conformation parameter which is related to the change in conformation of biomolecules adhered discretely to the sensing surface as a result of an interaction with the agent, but which is substantially independent of any resulting change in mass loading of the sensing surface. | 03-03-2011 |
20110083494 | MILK PROPERTY MEASURING DEVICE - The present invention provides a system and method for a milk measuring device for measuring the acoustic properties, such as acoustic damping and sound velocity in milk, in order to determine milk properties. The sound velocity in milk depends on temperature and composition. By carrying out, for example by means of a piezo element, a reference measurement on vibrations that have been directed by a second piezo element into a wire or the like of known material, which wire is strung in the measuring chamber which is filled with the milk to be tested, the milk temperature can be derived, so that other milk properties, in particular the fat/protein composition, can be determined in a more reliable manner. | 04-14-2011 |
20110232374 | MEASUREMENT DEVICE WITH RESONATOR - The invention relates to a measurement device with at least one resonator, comprising a measurement chamber with a fluidic input and a fluidic output wherein the measurement chamber is delimited, at its bottom surface, by a resonator, and wherein the resonator surface is configured to be electrically conducting, and the resonator surface forms the working electrode for an electrochemical measurement, and wherein electrodes are provided at the fluidic input and/or output at the transition to the measurement chamber. The invention is characterized in that the electrodes are exchangeable and allow the reception of a fluidic connection. | 09-29-2011 |
20110271747 | Method and apparatus for integrated measurement of the mass and surface charge of discrete microparticles using a suspended mirochannel resonator - Measurements of the mass and surface charge of microparticles are employed in the characterization of many types of colloidal dispersions. The suspended microchannel resonator (SMR) is capable of measuring individual particle masses with femtogram resolution. The high sensitivity of the SMR resonance frequency to changes in particle position in the SMR channel is employed to determine the electrophoretic mobility of discrete particles in an applied electric field. When an oscillating electric field is applied to the suspended microchannel, the transient resonance frequency shift corresponding to a particle transit can be analyzed to extract both the buoyant mass and electrophoretic mobility of each particle. These parameters, together with the mean particle density, can be used to compute the size, absolute mass, and surface charge of discrete particles. | 11-10-2011 |
20110283781 | DEVICE AND METHOD FOR CARRYING OUT MEASUREMENTS OF AN ANALYSIS FLUID - The invention relates to an apparatus ( | 11-24-2011 |
20120006106 | ACOUSTIC ASSESSMENT OF CHARACTERISTICS OF A FLUID RELEVANT TO ACOUSTIC EJECTION - Methods are provided for analyzing characteristics of fluids in the context of an acoustic ejection system. Such a system has a controller, an acoustic radiation generator, and a coupling medium coupling the radiation to a reservoir holding fluid. The methods can use acoustic radiation to both perturb a surface of the fluid in the reservoir and analyze the effect of the perturbation. The methods may use information about prior fluids. The methods of the invention can determine physical characteristics such as speed of sound and viscosity. The methods also include ways to determine a level of acoustic energy suitable to eject a droplet. Preferably the methods are executed automatically under control of programming of a controller of an acoustic ejection system. | 01-12-2012 |
20120060591 | APPARATUS FOR DETERMINING THE PROPERTIES OF A MEDIUM IN THE FORM OF A FLUID OR A SOFT MATERIAL - An apparatus determines the properties of a medium in the form of a fluid or soft material. An acoustic waveguide has two opposing guide elements delimiting an interior space to be filled with a medium. The guide elements, upon filling the interior space with a medium, form an interface with the medium with an inner surface. A transmitter generates acoustic surface waves in the waveguide, which are received by a receiver. The waveguide can be coupled with an evaluation unit for determining physical properties of the medium based on a signal generated by the receiver. A housing accommodates the guide elements, transmitter and receiver. On the respective inner surface, at least a part of the acoustic surface waves can be converted into volumetric sound waves of the medium and at least a part of the volumetric sound waves can be converted into acoustic surface waves of the waveguide. | 03-15-2012 |
20120090389 | PIEZOELECTRIC RESONATOR - A piezoelectric resonator for use in a sensor arrangement for detecting or measuring an analyte in a medium, comprises a quartz crystal plate, having a first crystal surface and a second crystal surface. The first crystal surface is provided with a first electrode, which has a surface area of less than 15 mm | 04-19-2012 |
20120118052 | METHOD AND SYSTEM FOR BACKGROUND SUPPRESSION IN MAGNETO-MOTIVE PHOTOACOUSTIC IMAGING OF MAGNETIC CONTRAST AGENTS - Method and system for background suppression in magneto-motive photoacoustic imaging of labeled target objects. | 05-17-2012 |
20120174657 | Method for Measuring Bacterial Growth and Antibiotic Resistance using Suspended Microchannel Resonators - Methods for improving measurements of bacterial growth, such as mass, in Suspended Microchannel Resonators (SMR's). Methods include techniques to provide for bacterial growth over time in response to changing fluid environment to aid in determining parameters such as drug resistance and drug susceptibility. In particular the methods include trapping multiple bacteria in the SMR for a time period and varying the fluid to include sequences of nutrients and antibiotics, and measuring the rate of mass change of the bacteria in response to the changes in fluid composition. | 07-12-2012 |
20120204627 | Method for Establishing Cavitation in Hydrostatic Devices and Control Device - A method for detecting cavitation in a hydrostatic system includes capturing an oscillation typical for the cavitation from a pressure captured over time. Furthermore, the method includes establishing an evaluation variable for cavitation on the basis of the captured oscillation. Additionally, the method includes comparing the evaluation variable to a comparison value. | 08-16-2012 |
20120204628 | USE OF VIBRATIONAL SPECTROSCOPY FOR DNA CONTENT INSPECTION - This disclosure concerns a cytometry system including a handling system that enables presentation of single cells to at least one laser source. The laser source is configured to deliver light to a cell within the cells in order to induce bond vibrations in the cellular DNA. The system further includes a detection facility that detects the signature of the bond vibrations, wherein the bond vibration signature is used to calculate a DNA content carried by the cell. | 08-16-2012 |
20120222471 | METHOD AND APPARATUS FOR MEASUREMENT OF PHYSICAL PROPERTIES OF FREE FLOWING MATERIALS IN VESSELS - Methods and apparatus for non-invasive, simultaneous determination of density and a shear resistance relating variable of a non-gaseous, free flowing material are presented. In one example, the non-gaseous free flowing material is disposed within a vessel at a known or constant level. According to this example, the method and apparatus utilizes an adjustable mathematical model to determine the density and a shear resistance relating variable based on measurements of the system comprising the filling material, the vessel wall and the dynamic measuring instrument interacting with the wall. | 09-06-2012 |
20120255347 | LIQUID CHARACTERISTIC ANALYZING APPARATUS - Disclosed is a liquid analysis apparatus ( | 10-11-2012 |
20120266664 | SURFACE ACOUSTIC WAVE SENSOR DEVICE AND METHOD OF CONTROLLING LIQUID USING THE SAME - A surface acoustic wave sensor device includes a main body and a liquid controller disposed external to the main body. The main body includes a sample chamber, a surface acoustic wave sensor connected to the sample chamber, a first disposal chamber connected to the surface acoustic wave sensor and channels connecting the sample chamber, the surface acoustic wave sensor and the first disposal chamber. The liquid controller controls flow of a sample through the main body. | 10-25-2012 |
20120318052 | DETECTION DEVICE - A detection device ( | 12-20-2012 |
20130125629 | MEASURING DEVICE COMPRISING A RESONATOR HAVING A FILM CARRIER - The invention relates to a measuring device ( | 05-23-2013 |
20130133408 | Ultrasonic transducer for use in a fluid medium - An ultrasonic transducer for use in a fluid medium. The ultrasonic transducer includes at least one housing and at least one transducer core at least partially accommodated in the housing. The transducer core includes at least one acoustic-electric transducer element. At least one damping material is also accommodated in the housing. The damping material includes at least one matrix material, at least one first filler introduced into the matrix material, and at least one second filler introduced into the matrix material. The first filler has a lower specific gravity than the matrix material. The second filler has a higher specific gravity than the matrix material. | 05-30-2013 |
20130139576 | Coupled Torsional Resonators Viscometer - A method for measuring the properties of a fluid that uses a torsionally resonant structure having a base structure; at least two parallel tines affixed to the base structure and projecting in the same direction from the base structure; and wherein the base structure is sufficiently compliant as to mutually couple the tines so that they behave as a single resonator when the tines are driven in synchronized manner. The torsionally resonant structure is immersed in the fluid to be measured and a tine driving mechanism is used to drive the tines torsionally. A tine movement sensing mechanism form measurements of tine movement response to the driving mechanism and the measurements of tine movement to form measurements of fluid properties. | 06-06-2013 |
20130186188 | FOULING REDUCTION DEVICE AND METHOD - A device and method for reducing and/or preventing fouling of a sensor is disclosed. The method comprises operating ultrasound technology that is submerged or partially submerged into a liquid medium that is responsible for the fouling. The device comprises the ultrasound technology itself. The ultrasound technology may be operated intermittently at high intensity to advantageously provide cavitation of the liquid medium, while avoiding the disadvantages typical of continuously operating ultrasound technology at high intensity. Additionally, the method may be carried out by taking advantage of the piezoelectric property of quartz. | 07-25-2013 |
20130205878 | LIQUID ANALYSIS USING CAPACITATIVE MICROMACHINED ULTRASOUND TRANSDUCERS - A method for analyzing liquid samples may comprise applying a liquid to a cMUT device having a plurality of sensors, drying the plurality of sensors, electronically detecting an agent bound to each of the plurality of sensors, wherein the electrical circuit provides a sensor output responsive to a mechanical resonance frequency of the sensor, wherein the mechanical resonance frequency of the sensor is responsive to the binding of an agent to the functionalized membrane, and determining the mass of the agent bound to each of the plurality of sensors. | 08-15-2013 |
20140053640 | SENSOR DEVICE FOR DETECTING FLOWABLE MEDIA, A PRESSURE DEVICE AND A MEASURING METHOD - Sensor device ( | 02-27-2014 |
20140157879 | METHOD AND DEVICE FOR TESTING A LIQUID - A measuring device ( | 06-12-2014 |
20140182362 | SYSTEMS FOR ANALYSIS OF FLUIDS - A resonant sensor assembly includes a dielectric substrate having a sensing region. The sensor assembly further comprises a plurality of tuning elements operatively coupled to the sensing region, where the sensing region is coupled to the plurality of tuning elements to define a plurality of resonant circuits. | 07-03-2014 |
20140182363 | METHODS FOR ANALYSIS OF FLUIDS - A method for analyzing a sample includes providing a sensor assembly having a sensing region with a plurality of resonant circuits, and a plurality of tuning elements. The method further includes exposing the sensor assembly to an environment comprising the sample, and probing the sample with one or more frequencies generated by the sensor assembly. Furthermore, the method includes determining an impedance of a sensor response over a measured spectral frequency range of the sensor assembly, and relating measurement of impedance of the sensor assembly to at least one environmental property of the sample. | 07-03-2014 |
20140250985 | SENSING SENSOR AND SENSING DEVICE USING PIEZOELECTRIC RESONATOR - A sensing sensor includes a crystal element having a first excitation electrode, a second excitation electrode, and a common electrode, an adsorbing layer, a wiring board, and a channel forming member. The crystal element is secured to the wiring board so as to form a space at one surface side of the first vibrating region and the second vibrating region. The channel forming member is disposed to form a supply channel of sample solution upward of each of the first vibrating region and the second vibrating region. The channel forming member is disposed such that an inferior surface of a left edge and a right edge of the channel forming member is positioned on the common electrode. The channel forming member is formed such that an injection port of the sample solution and a discharge port of the sample solution are opposed to the crystal element. | 09-11-2014 |
20140250986 | SYSTEMS AND METHODS OF DETERMINING A QUALITY AND A QUANTITY OF A FLUID - A system for sensing a fluid. The system including a fixed object; a first transducer generating a first sound wave in a horizontal direction and to detect a first echo of the first sound wave from the fixed object; a second transducer generating a second sound wave in a vertical direction; a temperature sensor detecting a temperature of the fluid; and a controller. The controller configured to produce a first signal to drive the first transducer to produce the first sound wave, produce a second signal to drive the second transducer to produce the second sound wave, receive a first indication of the detected first echo, receive a second indication of the detected second echo, receive a temperature indication, determine a quality of the fluid based on the first indication and the temperature indication, and determine a quantity of the fluid based on the second indication. | 09-11-2014 |
20140373607 | Apparatus for Determining and/or Monitoring at least one Process Variable - Apparatus for determining and/or monitoring at least one process variable of a medium in a container, comprising: a mechanically oscillatable unit; an electromechanical transducer unit, which has at least one piezoelectric or inductive, transducer element, which excites the oscillatable unit by means of an exciter signal to execute mechanical oscillations and which receives oscillations from the oscillatable unit and converts them into an electrical, received signal; a reference element having a first component of electrically adjustable size, wherein the reference element is connected in parallel with the electromechanical transducer unit and supplied with the same exciter signal and produces a reference signal uninfluenced by the oscillations of the oscillatable unit, and an electronics unit, which extracts a wanted signal from the received signal and the reference signal and, based on the wanted signal, determines and/or monitors the process variable. According to the invention, the electromechanical transducer unit includes a second component of electrically adjustable size. | 12-25-2014 |
20150362463 | SENSOR - A sensor which uses a detection element such as a surface acoustic wave element, and includes a flow passage for a specimen is provided. A sensor includes a substrate; a detection element located on the substrate and having a detection portion which detects an object to be detected contained in a specimen, in an upper surface thereof; and a flow passage structure located on the substrate and covering the detection portion with a space. The flow passage structure has an inlet for the specimen, a flow passage continuing from the inlet, and a space which continues from an end portion of the flow passage closer to the detection element and is located above the detection portion, and a bottom surface of the flow passage has, on the end portion of the flow passage closer to the detection element, a notched portion whose width gradually decreases toward an upstream of the flow passage. | 12-17-2015 |
20160047788 | QUARTZ CRYSTAL CHARACTERIZATION OF FRACTIONS DERIVED FROM CRACKED STREAMS - Methods are provided for characterizing the stability of a distillate fraction using a quartz crystal microbalance apparatus, such as a distillate fraction derived at least in part from a pre-refined crude oil. A sample can be aged for an aging period in a quartz crystal microbalance apparatus, and a frequency value for the sample in the quartz crystal microbalance apparatus can be determined before and after the aging period to determine a frequency difference, This frequency difference can be correlated directly with the ability of a jet fuel fraction to satisfy a stability test standard, such as a jet fuel breakpoint stability. The methods can also include using a temperature profile during characterization that can reduce or minimize operator error during the characterization. | 02-18-2016 |
20160089644 | ANALYZER AND AGITATION UNIT - Analyzers are described that control sample agitation by detecting vibration acceleration and using feedback to control the agitation and also alert to the presence of abnormal agitation. An embodiment provides an analyzer comprising a liquid agitation unit; an agitated liquid analysis unit; and a unit that controls the agitation unit. The agitation unit includes a vibrator of a liquid container and a detector of vibration of the container and that outputs a signal to the control unit, which responds by regulating the vibrator. | 03-31-2016 |
20160146776 | UREA WATER SUITABILITY DETERMINATION DEVICE - A concentration detecting section detects a concentration of urea water and outputs the detected value. A determining section determines whether the urea water is suitable by using the detected value. A temperature detecting section detects temperatures of detection targets. The detection targets have temperatures that are different from one another during operation of an engine. The determining section is adapted to calculate a temperature difference between temperatures of a particular detection target and another detection target and start determining whether the urea water is suitable when a determination start condition including that the temperature difference is within a reference range is satisfied. The reference range is defined as a range of temperature differences in which it is determined that the urea water is in a quiescent state, which is suitable for the determination. | 05-26-2016 |
20160187300 | ELECTROMAGNETIC TRANSDUCER - An electromagnetic transducer is disclosed. An example electromagnetic transducer may be provided for a fluid parameter meter. The example electromagnetic transducer may include at least one permanent magnet, a first armature mounted in magnetic cooperation with the permanent magnet, and a second armature mounted in magnetic cooperation with the permanent magnet. The first and the second armatures are arranged to interact with a third armature in magnetic cooperation with the first armature and the second armature. The example electromagnetic transducer may also include at least one electric coil mounted in cooperation with the magnetic field so that electric current through the electric coil to vary the vibratory forces. The example electromagnetic transducer may include an electronic module to control electric current and vibratory forces on a vibrating element of the fluid parameter meter. | 06-30-2016 |
20190145908 | METHODS AND APPARATUSES FOR ANALYSING FLUID SAMPLES | 05-16-2019 |