There is described a device (100) for analyzing particles of a sample, the device (100) comprising: i) an electromagnetic radiation source to illuminate the sample with electromagnetic radiation to thereby generate a scattered signal; ii) a detector to detect a first component (Ivh) of the scattered signal (101), and a second component (Ivv) of the scattered signal (102); and iii) a control device configured to: a) determine (110) the depolarization ratio (Ivh/Ivv) of the sample based on the detected first component (Ivv) and the detected second component (Ivh); b) calculate (122) a polarizability (α) associated with the sample, and c) determine (120) a shape characteristic (p) of the sample particles based on the depolarization ratio (Ivh/Ivv) and the polarizability (α).
G01N 9/02 - Investigating density or specific gravity of materialsAnalysing materials by determining density or specific gravity by measuring weight of a known volume
G01F 17/00 - Methods or apparatus for determining the capacity of containers or cavities, or the volume of solid bodies
3.
MEASURING CELL FOR RHEOMETER WITH A CONTACT-FREE SUPPORT IN A MEASUREMENT CONFIGURATION AND A GAP-FREE FLUSHING CONFIGURATION
The invention relates to a measuring cell (100) for a rheometer (102). The measuring cell (100) has a sample receiving container (104) for receiving a sample to be measured, a rotary body (106) which is at least partly rotatably arranged in the sample receiving container (104) in order to interact with the sample to be measured, and a controller (108) which is designed to control a relative movement between the rotary body (106) and the sample receiving container (104) such that a gap (110) is formed between the rotary body (106) and the sample receiving container (104) in a measurement configuration in order to arrange the rotary body (106) in the sample receiving container (104) in a mutually contactless manner and such that the gap (110) between the rotary body (106) and the sample receiving container (104) is closed in a liquid-tight manner in a flushing configuration.
G01N 11/00 - Investigating flow properties of materials, e.g. viscosity or plasticityAnalysing materials by determining flow properties
G01N 11/14 - Investigating flow properties of materials, e.g. viscosity or plasticityAnalysing materials by determining flow properties by moving a body within the material by using rotary bodies, e.g. vane
4.
DEVICE AND METHOD FOR CHARACTERIZING A PARTICLE SAMPLE
The invention relates to a device (100) for characterizing a particle sample (130), the device (100) comprising: i) a control device (110) designed a) to obtain image data with respect to the particle sample (130) from a particle analysis (150), b) to determine at least one first parameter which is indicative of a particle size, c) to determine at least one second parameter which is indicative of a particle shape, and d) to select a plurality of image data which, in each case, show at least one particle of the particle sample (130) and which, in each case, are representative of the first parameter and of the second parameter with respect to a predefined criterion (Q); and ii) a display (170) which is coupled to the control device (110) and which is designed to graphically present, in the form of an array (140), the image data selected by the control device (110). The invention also relates to a particle analysis device (160) and to a method.
The invention relates to a tribometer (100) for ascertaining tribological information between a tribopair consisting of a first body (102) and a second body (104) which is coupled to the first body (102). The tribometer (100) has a first drive device (106) for driving the first body (102) and the second body (104) coupled thereto in order to carry out a deflection, a second drive device (108) for applying a force, which is oriented opposite the deflection, onto the second body (104), and a controller (110) which is designed to control the second drive device (108) such that the force applied by the second drive device (108) onto the second body (104) is increased as the deflection of the first body (102) and the second body (104) produced by the first drive device (106) increases until the second body (104) is released from the first body (102). The tribometer also has an ascertaining device (112) for ascertaining the tribological information on the basis of the behavior of the tribopair during the aforementioned control process.
The invention relates to a method for ascertaining the viscosity of a sample (9) using a rotary viscosimeter (10) comprising a measuring shaft (1) which is driven by a drive, a measuring body (3), in particular a spindle, a conical measuring body or a plate which is arranged at one end of the measuring shaft (1) and can be supplied with a sample (9), and a second measuring part (7), in particular a measuring cup or a measuring plate into which the sample (9) can be introduced, wherein (a) in a first step, the measuring body (3) is arranged on the measuring shaft (1), and the second measuring part (7) is arranged on the rotary viscosimeter (10), (b) in a second step, the distance between the measuring body (3) and the second measuring part (7) is reduced until a flow defined in advance can pass between the measuring body (3) and the second measuring part (7), thus defining a zero distance between the measuring body (3) and the second measuring part (7), or the distance between the second measuring part (7) and the measuring body (3) is increased again and the point at which the flow is interrupted is defined as the zero distance between the measuring body (3) and the second measuring part (7), (c) in a third step, the distance between the measuring body (3) and the second measuring part (7) is increased from the zero distance such that a defined measuring gap (S) is set, (d) in a fourth step, the second measuring part (7) is removed, a sample (9) is introduced into the second measuring part (7), and the second measuring part (7) is repositioned and (e) in a fifth step, a viscosity measurement is carried out on the sample (9), and the viscosity of the sample (9) is determined by means of an analysis unit (18). In order to adjust the distance between the measuring body (3) and the second measuring part (7), an adjusting drive (11) is provided, and the measuring gap (S) is specified by a control unit (12) using the adjusting drive (11).
G01N 11/14 - Investigating flow properties of materials, e.g. viscosity or plasticityAnalysing materials by determining flow properties by moving a body within the material by using rotary bodies, e.g. vane
7.
POROSITY MEASUREMENT USING A GALLIUM-BASED INTRUDING AGENT
There is described an apparatus (100) for determining an information indicative of a porosity of a sample (111), the apparatus comprising: i) a measurement chamber (110), configured to accommodate the sample (111) to be measured; ii) an intruding agent reservoir (120), configured to provide the intruding agent (125) to the measurement chamber (110); iii) a pressure device (130), configured to apply a pressure profile to the measurement chamber (110), so that the intruding agent (125) is pressed into at least part of the pores of the sample (111); and iv) a determination device (150), configured to determine the information indicative of the porosity of the sample (111) based on the measured pressure. The intruding agent (125) comprises gallium or a gallium alloy, and the apparatus (100) is configured to provide reducing or inert conditions with respect to the intruding agent (125).
The invention relates to a device (100) for providing a plurality of samples in sample vessels (101) which, at placement positions (104), can be inserted into sample vessel holders (103) of at least one sample vessel stand (105), said device comprising: an in particular planar placement area (107), above which the sample vessel holders (103) can be arranged, the placement area having a display area (109) on which information relating at least to a sample and/or an operation can be displayed.
The invention relates to a circuit assembly (SO) for operating a probe (12) of a scanning probe microscope (81). The circuit assembly (50) has a control input (60) which can be provided with a control signal to be supplied to the probe (12), a conditioning device (62) for conditioning the probe (12) and/or the circuit assembly (50) for an operation according to a plurality of different operating modes, and a selection device (64) for selecting a currently selected operating mode of the plurality of different operating modes, according to which the probe (12) is currently operated.
The invention relates to a device (100) for the x-ray examination of a specimen, the device having: an x-ray beam-generating system (130) with: an x-ray source (101) for generating an original primary x-ray beam (145); an optical system (104) with a first optical component (102) and at least one second optical component (103), which are movable relative to the x-ray source (101) in order either to bring the first optical component (102) into interaction with the original primary x-ray beam (145), whereupon a first primary x-ray beam (117) is generated, which is deflected at a first deflection angle (α1), or to bring the second optical component (103) into interaction with the original primary x-ray beam (145), whereupon a second primary x-ray beam (118) is generated, which is deflected at a second deflection angle (α2); and having a rotary device (140) with a turntable (115) on which the x-ray beam-generating system (130) is mounted in order to rotate the x-ray beam-generating system (130) through either a first rotation angle (β1) or a second rotation angle (β2) about a turntable axis (106), in order to allow either the first primary x-ray beam (117) or the second primary x-ray beam (118) to fall onto a specimen region (147).
G01N 23/20 - Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups , or by using diffraction of the radiation by the materials, e.g. for investigating crystal structureInvestigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups , or by using scattering of the radiation by the materials, e.g. for investigating non-crystalline materialsInvestigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups , or by using reflection of the radiation by the materials
G21K 1/06 - Arrangements for handling particles or ionising radiation, e.g. focusing or moderating using diffraction, refraction, or reflection, e.g. monochromators
12.
SPECIMEN TRANSFER WITH EASY LOCATABILITY OF A TARGET ZONE
The invention relates to a processing and/or inspection apparatus (100, 130) for processing and/or inspecting a surface of a specimen (107), wherein the processing and/or inspection apparatus (100, 130) comprises a processing device (102) for processing a target zone (104) and/or an inspection device (132) for inspecting a target zone (104) on the surface of the specimen (107), a mechanical support interface (106) as a mechanical reference for supporting a specimen carrier (108), which can be removably mounted on the support interface (106) with the specimen (107), and a data source (110) for providing data to said processing and/or inspection apparatus (100, 130), or to another processing and/or inspection apparatus (100, 130), which data is indicative for a position of the target zone (104) relative to said mechanical reference.
The invention relates to a method for cleaning a viscometer (10), in particular a throughflow viscometer, which can be flowed through by fluid samples for the automated filling and cleaning of the measuring cell, wherein, for the measurement of the viscosity, a fluid sample is conducted into the at least one measuring cell (5) and the, in particular dynamic, viscosity of the sample is determined, wherein, in order to clean the measuring cell (5) after the measurement of the viscosity of the sample, the measuring cell (5) is flushed in a flushing operation with a cleaning agent, in particular a solvent or a combination of a plurality of solvents, with a defined viscosity, wherein, during the flushing operation, the viscosity of the cleaning agent which flows through the measuring cell (5) is determined in the measuring cell (5) at a number of times, and wherein the measured viscosity of the cleaning agent is used for the determination of the cleanness of the measuring cell (5), wherein the flushing operation is ended when the change in the viscosity of the cleaning agent drops below a previously defined threshold value between a number of measured values or within a previously defined time period, and/or wherein the flushing operation is ended when the value of the measured viscosity lies within a previously defined range around the defined viscosity value of the cleaning agent.
G01N 11/14 - Investigating flow properties of materials, e.g. viscosity or plasticityAnalysing materials by determining flow properties by moving a body within the material by using rotary bodies, e.g. vane
G01N 11/00 - Investigating flow properties of materials, e.g. viscosity or plasticityAnalysing materials by determining flow properties
15.
MEASURING DRIVE HAVING ULTRASOUND-MOUNTED SHAFT, MEASURING DEVICE, METHOD, AND USE
The invention relates to a measuring drive (100) for a measuring device (101), in particular a rheometer. The measuring drive (100) has: i) a motor (110), ii) a shaft (120), which is coupled to the motor (110) in such a way that the shaft (120) can be driven by means of the motor (110), and iii) an ultrasound device (130), which is designed to provide ultrasound (135) at the shaft (120) in such a way that at least part of the shaft (120) can be mounted substantially without contact by means of the ultrasound (135). The invention also relates to the measuring device (101), a method, and a use.
G01N 11/10 - Investigating flow properties of materials, e.g. viscosity or plasticityAnalysing materials by determining flow properties by moving a body within the material
A description is given of a device (100-1200) for microwave application for a liquid sample flowing through, wherein the device comprises: a hollow conductor (101), which is designed for guiding a microwave (103) inside, in particular in the longitudinal direction (105) of the hollow conductor (101); a sample guiding tube (107) with a plurality of windings (109_1, 109_2) within the hollow conductor, wherein at least one of the windings (109_1, 109_2) has at least one portion (111) along which its curvature changes, in particular by between 50% and 200%.
An apparatus (100-1400) is provided for storing one or more measuring probes (419) for a scanning probe microscope, the apparatus comprising: delimiting surfaces (413, 411, 415, 417) for each of the one or more measuring probes (419), said delimiting surfaces each delimiting a receptacle space (109, 409), more particularly a tunnel-shaped receptacle space, with a receptacle space longitudinal direction (421), a measuring probe (419) being receivable in said receptacle space in such a way that a measuring probe longitudinal direction (553) is, at least locally, aligned parallel to the receptacle space longitudinal direction (421), wherein the delimiting surfaces (413, 411, 415, 417) are embodied to: allow a displacement of the measuring probe (419) in the forward and/or backward direction along the measuring probe longitudinal direction (553), at least locally parallel to the receptacle space longitudinal direction (421), and prevent a displacement transverse to the receptacle space longitudinal direction (421).
The invention relates to a rotational viscometer (10) for measuring the viscosity of substances, comprising - a measuring shaft (1) and a hollow shaft (2) which is driven by a drive (4), said measuring shaft (1) being arranged within the hollow shaft (2), - a measuring body (3) which is arranged at one end of the measuring shaft (1) and can be supplied with a sample, - a coupling element, in particular an elastic coupling element, said hollow shaft (2) being connected to the measuring shaft (1) via the coupling element, and - an angle measuring unit (8) which is designed and arranged relative to the measuring shaft (1) such that the angular difference and/or the rotational phase difference between the hollow shaft (2) and the measuring shaft (1) can be measured during a measuring operation. The invention is characterized in that the hollow shaft (2) and the measuring shaft (1) end opposite the measuring body (3) protrude into a housing (5), and the coupling element is arranged in the housing (5), and - the housing (5) and the coupling element are connected to the measuring shaft (1), to the hollow shaft (2), and/or optionally to or in the viscometer housing such that the housing (5) together with the coupling element arranged in the housing (5) can be removed from the rotational viscometer (10) and/or the measuring shaft (1) and/or the hollow shaft (2), in particular in a pluggable manner.
G01N 11/14 - Investigating flow properties of materials, e.g. viscosity or plasticityAnalysing materials by determining flow properties by moving a body within the material by using rotary bodies, e.g. vane
19.
X-RAY DEVICE AND METHOD FOR SMALL-ANGLE SCATTERING
The invention relates to an X-ray device (100, 400) for examining an elongate specimen (103, 403), in particular by means of small-angle scattering by fibres, having: an X-ray source (101, 401) for emitting an in particular monochromatic X-ray (102, 402); a specimen holder receptacle (107, 407) for retaining a specimen holder (110, 410) holding a specimen such that the specimen is irradiated by the X-ray (102, 402) transversely to the longitudinal direction (113, 413) of the specimen; and a detector (104, 404) which is designed and arranged to detect X-rays (111a, 111b, 411a, 411b) scattered or refracted at opposing angles by the specimen.
The invention relates to a handling device (50) for handling a measuring probe (12) of a scanning probe microscope (81). The measuring probe (12) has a probe body (51) and a probe tip (85) which is coupled to the probe body (51) by means of a cantilever (52), and the handling device (50) has a receiving device (53) for receiving the measuring probe (12) on a receiving surface (54); a guide structure (55) in which the measuring probe (12) can be guided and in the process the probe body (51) is bordered at least over a part of the probe body circumference and the cantilever (52) and the probe tip (85) are supported in a contact-free manner; and a transport device (56) for transporting the measuring probe (12) from the receiving surface (54) to a target surface (57) along the guide structure (55).
The invention relates to a positioning device (60) for positioning a functional body (62), in particular for a scanning probe microscope (1), wherein the positioning device (60) has a main body (64) with a guide surface (66), a transfer body (68) which can be brought into combined rotational and translational movement relative to the main body (64) by means of a drive force and has a running surface (70) and a transfer surface (72), and has a coupling body (74) which is operatively coupled to the transfer body (68) at the transfer surface (72) and which can be operatively coupled to the functional body (62) in order to deflect the translational movement of the transfer body (68) on to the functional body (62) and as a result to position the functional body (62), wherein the guide surface (66) of the main body (64) and the running surface (70) of the transfer body (68) are arranged in operative connection with one another such that the transfer body (68) can be guided during its combined rotational and translational movement by means of the main body (64).
A capacitive distance-measuring device (50) for measuring an item of distance information of a probe body (7), in particular for a scanning probe microscope (1), wherein the distance-measuring device (50) comprises two at least partly electrically conductive, rigid capacitor bodies (54, 56) that are immovable in their relative position with respect to one another, an electrically conductive and at least partly deformable capacitor body (58), which is arranged in a deformable manner between the rigid capacitor bodies (54, 56) and configured to be deformed during movement of the probe body (7), a detection device (60) for detecting electrical signals at at least one of the capacitor bodies (54, 56, 58), and an identification device (62) for identifying an item of information indicative of the distance information of the probe body (7) based on the detected electrical signals.
G01Q 20/04 - Self-detecting probes, i.e. wherein the probe itself generates a signal representative of its position, e.g. piezoelectric gauge
G01D 5/241 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying capacitance by relative movement of capacitor electrodes
23.
METHOD AND APPARATUS FOR CHECKING THE FILLING STATE
Method for checking the filling state of the sample receptacle space (2) of a rheometer or viscometer when measuring rheometric parameters of samples (3) in the sample receptacle space (2), wherein the sample receptacle space (2) is bounded by a lower measuring part (4) and an upper measuring part (5) which are possibly movable relative to one another, characterized - in that at least one image recording of at least one filling state of the sample receptacle space (2), which corresponds to a predefined desired state, is carried out before the parameters are measured, - in that at least one image recording of the actual state of the sample receptacle space is recorded by means of an optical image recording unit (6) before the start and/or over the course of the checking of the sample (3), and - in that the image recordings of the actual state and of the desired state are compared with one another and/or are related to one another and are evaluated.
G01N 11/14 - Investigating flow properties of materials, e.g. viscosity or plasticityAnalysing materials by determining flow properties by moving a body within the material by using rotary bodies, e.g. vane
G01N 11/00 - Investigating flow properties of materials, e.g. viscosity or plasticityAnalysing materials by determining flow properties
The invention relates to a method for the examination, in particular a ring shear examination, of powder samples (30) using a rheometer, which has a first measuring part (1) accommodating the powder to be examined and another measuring part (2) arranged above the first measuring part (1), which measuring parts (1, 2) are rotatable relative to one another using at least one rotary motor (M) and delimit between themselves an accommodation space for the sample (30) to be examined. According to the invention, a predetermined, preferably constant force, normal to the plane of the rotation of the measuring parts, is applied to the powder located between the measuring parts during the measurement, and the torque is applied to the first measuring part (1) and/or to the other measuring part (2) without exerting a force, in addition to the predetermined force, on the sample (30) in this direction.
G01N 11/14 - Investigating flow properties of materials, e.g. viscosity or plasticityAnalysing materials by determining flow properties by moving a body within the material by using rotary bodies, e.g. vane
25.
CONDITIONING A SAMPLE CONTAINER BY MEANS OF CONDITIONING FLUID FOR PROMOTING THERMAL COUPLING AND FOR SUPPRESSING STEAM BUILD-UP
The invention relates to a conditioning device (20) for conditioning a sample container (1) designed to accommodate a sample (2) for a sample measuring device (50), wherein the conditioning device (20) has a thermal coupling body (6) that can be thermally conductively coupled to the sample container (1) in order to promote a thermal energy exchange between the sample container (1) and an environment, and has a supply device (22) that is designed to supply a conditioning fluid in such a way that a first portion of the conditioning fluid can be supplied to the sample container (1) to suppress a steam build-up in the sample container (1), and a second portion of the conditioning fluid can be supplied to the thermal coupling body (6) to promote a thermal energy exchange between the thermal coupling body (6) and the environment.
The invention relates to a playing arena (100) for training with a flying object (102). The playing arena (100) has a playing field (104), a playing field border (106) which at least partly borders the playing field (104), a flying object supply device (108) for supplying the flying object (102) to the playing field (104), and a flying object return device (110) for returning the flying object (102) to the flying object supply device (108) after the flying object (102), which is supplied to a user (112) by means of the flying object supply device (108), has been transported to the playing field border (106) by the user (112). The playing field border (106) is designed to prevent a rebound of the flying object (102) into the playing field (104) after the flying object (102) has been transported to the playing field border (106) by the user (112).
A dynamic light scattering apparatus (10) comprises a source (1) for irradiating a sample (5) with primary electromagnetic radiation (2), a detector (7) for detecting secondary electromagnetic radiation (6) generated by scattering the primary electromagnetic radiation (2) at the sample (5), a refraction index determination unit (20) comprising a movable optical element (4) and configured to determine information indicative of a refraction index of the sample (5) based on measurements of the secondary electromagnetic radiation for a plurality of different positions of the movable optical element, and a particle size determining unit (22) configured to determine information indicative of particle size of particles in the sample (5) by analyzing the detected secondary electromagnetic radiation (6) and taking into account the refraction index determined by the refraction index determination unit.
The invention relates to a positioning unit for a carriage (3) that is adjustable by way of a linear drive (1), and a base (16), wherein the linear drive (1), in particular spindle drive or linear motor, has an elongate part and a short part. According to the invention, provision is made for the positioning unit (10) to have at least two compensation rods (4a, 4b), wherein in each case two adjacent compensation rods (4a, 4b) are connected together at one end via a joint (6) and are connected at the in each case other end to the elongate part of the linear drive (1) via one of two joint arrangements (5a, 5b) that are arranged in each case at the end of the elongate part of the linear drive (1), wherein the compensation rods (4a, 4b) and the elongate part of the linear drive (1) are arranged in the form of a triangle and the angle between the compensation rods (4a, 4b) and the joint (6) is variable by a thermal change in length of the elongate part of the linear drive (1), and wherein the carriage (3) is connected to the joint (6) and the short part of the linear drive (1) is connected to the base (16), or the carriage (3) is connected to the short part of the linear drive (1) and the base (16) is connected to the joint (6).
B23Q 5/38 - Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously
B23Q 5/40 - Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously by feed shaft, e.g. lead screw
B23Q 11/00 - Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling workSafety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
G01B 5/00 - Measuring arrangements characterised by the use of mechanical techniques
G02B 7/00 - Mountings, adjusting means, or light-tight connections, for optical elements
The invention relates to a device (100) for acquiring information indicative of a particle size and/or shape for particles in a sample, said device (100) comprising an electromagnetic radiation source (102) for generating electromagnetic primary radiation (108), an electromagnetic radiation detector (104) for detecting electromagnetic secondary radiation (110) generated by said electromagnetic primary radiation (108) interacting with the sample, and an acquisition device (106) that is configured to acquire the information indicative of the particle size and/or shape based on the detected electromagnetic secondary radiation (110), said acquisition device (106) being designed to acquire the information, selectively, first (112) by means of identification and determination of the size and/or shape of the particles on a detector image generated from the electromagnetic secondary radiation (110), and/or secondly (114) from temporal changes in the electromagnetic secondary radiation (110) between detector images that were generated at different detection times.
The invention relates to a rotary rheometer having a stator (2) arranged in a rotationally invariant fashion, and having a rotor (1) that can be rotated about the axis of the stator (2) by means of an eddy current drive, wherein the test medium (6) to be examined can be introduced into at least one measuring gap (15) formed between surfaces of rotor (1) and stator (2) located opposite of one another. According to the invention, the measuring gap (15) filled with the test medium (6) to be examined functions as and/or is configured as a hydrodynamic bearing between rotor (1) and stator (2), and the distance and mutual position of the mutually facing surfaces of rotor (1) and stator (2) defining the measuring gap (15) are predetermined and set, and are maintained during the measuring process, exclusively by the hydrodynamic bearing action generated by the rotation of the rotor (1) relative to the stator (2).
G01N 11/14 - Investigating flow properties of materials, e.g. viscosity or plasticityAnalysing materials by determining flow properties by moving a body within the material by using rotary bodies, e.g. vane
The invention relates to an autoclave with a receiving container (1) for specimens, which can be sealed in a pressure-tight manner and the wall (2) of which is at least partially, preferably entirely, formed from or consists of electrically conductive material that heats up when current passes through, wherein the electrically conducting material is a preferably sintered ceramic material, a glass or glass-like material made electrically conductive by doping or a fluoropolymer with fillers that impart electrical conductivity.
The present invention relates to a method and to an apparatus for investigating the X-ray radiographic properties of samples (3c), wherein the X-rays scattered at a sample (3c) are recorded by a detector (5) located at a distance from the sample (3c) and evaluated with respect to the sample properties. According to the invention, provision is made, in the case of a prespecified distance between the X-ray source (1) or the point of origin (2b) of the X-ray (10) directed toward the sample (3c) and the detector (5), for a prespecified number of successive measurements, for the distance (S1, S2) between the sample (3c) and the detector (5) to be changed and set to prespecified different values.
The invention relates to a rotational viscometer, comprising a measuring shaft (25) that can be rotated at a specified rotational speed, a measuring part (3) that is carried by said measuring shaft and that can be lowered into a sample, and a detection unit for determining the angle of twist of the measuring part (3) relative to the driven part of the measuring shaft (25). According to the invention, a twistable element (2) is inserted into the measuring shaft (25), preferably in the section of the measuring shaft close to the motor, the detection unit (17, 18, 24) is moved along with the shaft and determines the relative twist or the angle of twist between the shaft part (9) located on the motor side relative to the twistable element (2) and the shaft part (10) located on the measuring-part side, and the output signals of the detection unit (17, 18, 24) are fed to an evaluation device (13) as the basis for determining the viscosity of the sample.
G01N 11/14 - Investigating flow properties of materials, e.g. viscosity or plasticityAnalysing materials by determining flow properties by moving a body within the material by using rotary bodies, e.g. vane
The invention relates to a sensor array for viscosity measurement, comprising the following: a carrier substrate having an opening; a metal plate-shaped oscillating element disposed on a surface of the carrier substrate and parallel to said surface over the opening; at least two metal contact electrodes disposed on the carrier substrate; at least two metal spring elements, wherein each of the contact electrodes is connected to the oscillating element by means of a spring element such that said element is mounted on the carrier substrate by means of the spring elements; and a magnet, which is disposed in the vicinity of the carrier substrate such that the magnetic field lines penetrate the plate-shaped oscillating element.
G01N 11/16 - Investigating flow properties of materials, e.g. viscosity or plasticityAnalysing materials by determining flow properties by moving a body within the material by measuring damping effect upon oscillatory body
G01N 9/00 - Investigating density or specific gravity of materialsAnalysing materials by determining density or specific gravity
35.
METHOD FOR DETERMINING THE VISCOSITY OF FLUIDS AND VISCOSIMETER
The invention relates to a method for determining the viscosity of fluids, especially liquids, wherein the fluid is brought into and moved through a tapering gap (9) bounded by two opposite wall surfaces (10, 11). According to the invention, the distance or the change of the distance (ﶴX) between the opposite wall surfaces (10, 11) is measured by means of the pressure exerted by the material moved through the preferably steadily tapering or narrowing gap (9) onto the walls and is used or evaluated as a measurement value for the viscosity of the fluid.
G01N 11/14 - Investigating flow properties of materials, e.g. viscosity or plasticityAnalysing materials by determining flow properties by moving a body within the material by using rotary bodies, e.g. vane
patents
