The force measuring apparatus comprises a stationary parallel limb (11, 111) and a movable parallel limb (12, 112) which receives the load of an applied material to be weighed and is connected to the stationary parallel limb (11, 111) by means of parallel guides (14, 114). The force measuring apparatus also comprises a measuring sensor (20, 120) which is connected in a force-transmitting manner to the movable parallel limb (12, 112) and comprises a coil (25, 125), which can move in a magnet system (27, 127) and through which an electrical current (24) can flow, and a position sensor (21, 28) which determines the deflection of the coil (25, 125), caused by the application of a load to the movable parallel limb (12, 112), from the adjusted position thereof with respect to the magnet system (27, 127). The electrical current (24) through the coil (25, 125) is used to return the coil (25, 125) and the movable parallel limb (12, 112) connected to the coil (25, 125) or to the magnet system (27, 127) to the adjusted position and/or to hold said elements there by means of the electromagnetic force between the coil (25, 125) and the magnet system (27, 127). According to the invention, at least one system identification means (29) of the force measuring apparatus (1) is created using a processing unit (26), and the system identification means (29) is compared with at least one invariable system reference means (30) which is persistently stored in the processing unit (26), wherein the functionality of the force measuring apparatus (1) is determined on the basis of the comparison and an action of the force measuring apparatus (1) is then carried out, and wherein the magnitude of the electrical current (24) and the magnitude of the deflection of the coil (25, 125) from the adjusted position thereof are used to check the functionality.
G01G 7/04 - Appareils de pesée dans lesquels l'équilibrage est assuré par une action magnétique, électromagnétique ou électrostatique, ou par des moyens non prévus dans les groupes par action électromagnétique avec des moyens pour la régulation du courant allant aux solénoïdes
G01G 23/01 - Test ou calibrage des appareils de pesée
The load cell (1) has a deformation body (2) with an upper contact surface (3) and a lower contact surface (4). The contact surfaces (3, 4) are designed for introducing force into the deformation body (2) and each have a support point (5), wherein the current support points together form a force reference line (6). A columnar region (7) of the deformation body, having a central longitudinal axis (8) and an outer surface line parallel thereto, is arranged between the contact surfaces (3, 4). The load cell (1) further comprises a first determination means (9), which is mounted on the columnar region (7) of the deformation body (2) and converts the mechanical deformation of the deformation body (2) into a signal, and a second determination means (10), which is mounted on the columnar region (7) of the deformation body (2) and converts a deviation of the central longitudinal axis (8) from the force reference line (6) into a signal. The first determination means (9) and the second determination means (10) each have at least one strain sensor. The at least one strain sensor of the second determination means (10) is mounted substantially centrally between the upper contact surface (3) and the lower contact surface (4) and is oriented by a predefined acute angle relative to the outer surface line in such a manner that the signal of the second determination means (10) becomes null if the central longitudinal axis (8) does not deviate from the force reference line (6).
G01G 3/14 - Appareils de pesée caractérisés par l'utilisation d'organes déformables par élasticité, p. ex. balances à ressort dans lesquels l'élément de pesée est constitué par un corps solide soumis à une pression ou une traction pendant la pesée utilisant la mesure des variations de la résistance électrique
G01G 23/00 - Dispositifs accessoires pour appareils de pesée
G01L 1/22 - Mesure des forces ou des contraintes, en général en mesurant les variations de la résistance ohmique des matériaux solides ou des fluides conducteurs de l'électricitéMesure des forces ou des contraintes, en général en faisant usage des cellules électrocinétiques, c.-à-d. des cellules contenant un liquide, dans lesquelles un potentiel électrique est produit ou modifié par l'application d'une contrainte en utilisant des jauges de contrainte à résistance
G01L 5/16 - Appareils ou procédés pour la mesure des forces, du travail, de la puissance mécanique ou du couple, spécialement adaptés à des fins spécifiques pour la mesure de plusieurs composantes de la force
A weigh module (1) includes a load cell (2), a base plate (3), a top plate (6), a force-transmitting member (3) serving to transmit the weighing force from the top plate (6) to the load cell (2), and movement-restricting means (9, 10) which serve to limit the horizontal floating movement of the top plate (6) relative to the base plate (3) within a confined range of free play and to transmit lateral force components directly from the top plate (6) to the base plate (3). One part of the movement-restricting means (9, 10) has the form of a channel whose top edges (11) are rigidly connected to the top plate (6) and whose flat bottom extends parallel to the base plate (3) at a clear distance from the latter. The other part of the movement-restricting means (9, 10) is a bolt whose shaft (15) is anchored in the base plate (3) and passes with all-around clearance through a passage (14) in the channel bottom (13), and whose head (16) is larger than the passage (14) and arranged above the channel bottom (13) with a vertical clearance gap from the latter
A draft shield (1) for a balance has a rear wall (2), a front wall (11), two side walls (9, 10), a top cover 8, and rail members (3, 4) which extend from the upper corners of the rear wall (2) to the upper corners of the front wall (11) and carry guide tracks (5, 6, 7) in which the top cover (8) and the side walls (9, 10) are slidably seated. According to the invention, each rail member (3, 4) includes at its front end a spring element and a holder element which are integrally connected to the rail members (3, 4) and are made of one piece with the latter. The spring elements and the holder elements are arranged on the rail members (3, 4) in such a way that the front wall (11) can be inserted between the spring elements (16) and the holder elements (17), and as a result of said insertion the front wall (11) will be secured to the rail members (3, 4 ).
G01N 33/00 - Recherche ou analyse des matériaux par des méthodes spécifiques non couvertes par les groupes
G01N 27/18 - Recherche ou analyse des matériaux par l'emploi de moyens électriques, électrochimiques ou magnétiques en recherchant l'impédance en recherchant la résistance d'un corps chauffé électriquement dépendant de variations de température produite par des variations de la conductivité thermique d'un matériau de l'espace environnant à tester
The invention relates to a reference electrode having an in-situ modified porous diaphragm and to a method for in-situ modifying the porous diaphragm, wherein the reference electrode comprises at least one housing (1, 201, 301), a first discharge element (4, 204, 304), a modified electrolyte, which is free-flowing and is disposed in the housing (1, 201, 301), and a porous diaphragm (3, 203, 303), said porous diaphragm providing a fluidic connection between the modified electrolytes and a measurement medium (9, 209, 309), and through which the modified electrolyte is discharged during operation, wherein the modified electrolyte comprises a first component and a surface-modified component that in-situ modifies the surface of the porous diaphragm (3, 203, 303) as the modified electrolyte passes through.
The invention relates to a gas measuring device for the absorption-spectroscopic in-situ determination of at least one chemical and/or physical parameter of a gaseous measurement medium (432), the gas measuring device comprising a first housing (101, 201, 301, 401, 501), at least one laser (102, 202, 302, 402) as a radiation source, which is arranged in the first housing (101, 201, 301, 401, 501), at least one first process window (114, 214, 314, 414, 514) for coupling the radiation emitted by the laser (102, 202, 302, 402) into a measurement medium (432), and at least one detector (103, 203, 303, 403), by means of which the radiation is detected after interaction with the measurement medium (432), characterized in that the first process window (114, 214, 314, 414, 514) is designed as an afocal meniscus lens, which has a convex surface and a concave surface.
G01N 21/39 - CouleurPropriétés spectrales, c.-à-d. comparaison de l'effet du matériau sur la lumière pour plusieurs longueurs d'ondes ou plusieurs bandes de longueurs d'ondes différentes en recherchant l'effet relatif du matériau pour les longueurs d'ondes caractéristiques d'éléments ou de molécules spécifiques, p. ex. spectrométrie d'absorption atomique en utilisant des lasers à longueur d'onde réglable
A sensor unit for attachment to a container such as a bag or other vessel used to retain material includes a clamping mechanism for attaching the sensor unit to the container. The clamping mechanism may be configured to break or provide an indication that the connection between the sensor and container has broken that is visually detectable before a leak of material occurs or is detectable by a person visually monitoring the container or sensor. Such an indication can also indicate that the sensor was previously used and should not be used again for single use applications. Such a visual indicator is separate and different from seeing an actual leak and permits an event that may desterilize material within the container or lead to other problems to be corrected prior to use of a single use reaction system.
A system and method for releasably coupling an extendable element to an actuator. Such a system may include an actuator housing with a specially adapted integral connecting end having a cavity therein. An extendable element may extend into the cavity through an opening in the connecting end of the housing and be coupled to a motive element of the actuator by a rotatable collar that resides in the cavity. A cover plate forms a part of the actuator housing connecting end. The cover plate compliments the integral portion of the connecting end and, in conjunction therewith, encloses the collar and the coupled portion of the extendable element. A substantially hollow end cap is passed over the extendable element and releasably attached to the actuator housing to enclose the distal connecting end thereof. In some embodiments, the coupled extendable element may reciprocate within an outer tube that is also releasably attached to the actuator housing.
G01N 1/02 - Dispositifs pour prélever des échantillons
B01L 3/00 - Récipients ou ustensiles pour laboratoires, p. ex. verrerie de laboratoireCompte-gouttes
A61B 10/00 - Instruments pour le prélèvement d'échantillons corporels à des fins de diagnostic Autres procédés ou instruments pour le diagnostic, p. ex. pour le diagnostic de vaccination ou la détermination du sexe ou de la période d'ovulationInstruments pour gratter la gorge
E21B 49/06 - Test pour déterminer la nature des parois des trous de forageEssais de couchesProcédés ou appareils pour prélever des échantillons du terrain ou de fluides en provenance des puits, spécialement adaptés au forage du sol ou aux puits par prélèvements mécaniques d'échantillons du terrain au moyen d'outils de forage latéral ou de dispositifs de raclage
E21B 49/10 - Prélèvement d'échantillons de fluides ou test des fluides dans les trous de forage ou dans les puits utilisant des appareils d'échantillonnage ou de test de fluide venant s'appliquer latéralement contre la paroi du puits
An extendable sample capture element for use in a sampling device designed to extract samples, such as reaction/reactant samples, from vessels such as reactor vessels is disclosed. A sample capture element of the present invention includes one or more concave sample pockets that may be of various shape and volume. A sample capture pocket is adapted to capture a known volume of material when the sample capture element is extended into said material. The material sample remains trapped in the sample capture pocket upon sample capture element retraction. When multiple pockets are present, at least one pocket may function as a mixing pocket. Ports in the at least one sample capture pocket may be placed in communication with corresponding material transfer channels extending through or along the sample capture element to allow for quenching, dilution and discharge of a captured material sample, such as discharge to an analyzer or another downstream location.
The invention relates to a test sample (100, 200, 300, 400, 500) for testing a measuring device (10) for determining gravimetric moisture, wherein the measuring device (10) has a test chamber (30), a weighing unit (40) with a sample holder (60) for determining the mass of the sample (62) situated in the measuring position in the test chamber (30), and at least one means for heating (31) the sample which can be placed on the sample holder (60). The test sample (100, 200, 300, 400, 500) has a test substance, which changes the mass thereof in a reproducible manner due to the heating, and the test sample (100, 200, 300, 400, 500) is pre-portioned and in one piece. The method for testing the measuring device (10) comprises the following steps: placing a test sample (62) onto the sample holder (60), determining the starting mass m0 of the test sample (62), heating the test chamber (30) by means of a predefined temperature profile, measuring the mass m1 of the test sample using the weighing device (40) after the test sample (100, 200, 300, 400, 500) was heated by means of a predefined temperature profile, comparing the measured mass m1 to the reference value of the mass m* and outputting a signal corresponding to the result of the comparison. The test sample (100, 200, 300, 400, 500) comprises a test substance, which changes the mass thereof in a reproducible manner due to the heating, and the test sample (100, 200, 300, 400, 500) is pre-portioned and in one piece.
G01N 5/04 - Analyse des matériaux par pesage, p. ex. pesage des fines particules séparées d'un gaz ou d'un liquide en éliminant un constituant, p. ex. par évaporation, et en pesant le reste
12.
METHOD FOR OPERATING AN OPTOCHEMICAL SENSOR AND MEASURING INSTRUMENT
A method for operating an optochemical sensor and an optochemical sensor, wherein the optochemical sensor has a housing, a radiation source, a detector and a sensitive element, wherein the radiation source and the detector are arranged in the housing, wherein the sensitive element has a signal substance. The method is characterized in that a used radiation intensity (I) and/or a smoothing factor (alpha) are adaptively set in dependence on changes in the measurement medium.
G01N 21/27 - CouleurPropriétés spectrales, c.-à-d. comparaison de l'effet du matériau sur la lumière pour plusieurs longueurs d'ondes ou plusieurs bandes de longueurs d'ondes différentes en utilisant la détection photo-électrique
G01N 21/77 - Systèmes dans lesquels le matériau est soumis à une réaction chimique, le progrès ou le résultat de la réaction étant analysé en observant l'effet sur un réactif chimique
An in situ sampling device for capturing a material sample from a vessel. Embodiments of the present invention may be disposed as elongate probes having extendable sample capture elements. A sample capture element of such a device may include a concave sample capture pocket located near a distal end thereof. The sample capture pocket is adapted to capture a known volume of material when the sample capture element is extended into said material. The material sample remains trapped in the sample capture pocket upon sample capture element retraction. The sample capture pocket may be provided with a port for receiving material therein and a port for expelling material therefrom. These ports may be placed in communication with corresponding material transfer channels extending through the sample capture element. A device of the present invention provides for substantially contemporaneous sample capture and sample processing.
An in situ autosampling method and associated sampling device for capturing a material sample from a vessel. Methods of the present invention make use of a sampling device having an extendable sample capture element (60) with a concave sample capture pocket (65) located near a distal end (60b) thereof. The sample capture pocket is adapted to capture a known volume of material when the sample capture element is extended into said material. The material sample remains trapped in the sample capture pocket upon sample capture element retraction. Ports (75) in the sample capture pocket may be placed in communication with corresponding material transfer channels extending through the sample capture element to allow for the in situ processing of a material sample, and the subsequent discharge of the sample to an analyzer or another downstream location.
G01N 1/20 - Dispositifs pour prélever des échantillons à l'état liquide ou fluide pour matériau coulant ou s'éboulant
G01N 35/10 - Dispositifs pour transférer les échantillons vers, dans ou à partir de l'appareil d'analyse, p. ex. dispositifs d'aspiration, dispositifs d'injection
15.
APPARATUS FOR MEASURING THE DIMENSIONS OF AN OBJECT
In an apparatus for measuring the dimensions of an object, an opto-electronic sensor system includes an illumination device which sends light towards the object and a receiving device which receives light reflected from the object. In particular, the apparatus according to the invention comprises means for optically splitting the field of view of the opto-electronic sensor system into a plurality of sectors, wherein each of the sectors covers a partial or a full view of the object under inspection from a unique viewing point. The arrangement of the optical splitting means is selected so that based on the respective field of view and the location of the actual or virtual viewing point of each sector the area on the object surface which is visible from at least one of said viewing points is maximized. The apparatus has only one opto-electronic sensor, but is used for multi-perspective imaging of an object.
G01B 11/24 - Dispositions pour la mesure caractérisées par l'utilisation de techniques optiques pour mesurer des contours ou des courbes
G01B 11/25 - Dispositions pour la mesure caractérisées par l'utilisation de techniques optiques pour mesurer des contours ou des courbes en projetant un motif, p. ex. des franges de moiré, sur l'objet
16.
METHOD FOR DETERMINING PROCESS VARIABLES FOR A DYNAMOMETER, AND DYNAMOMETER
The method is used for determining process variables in a dynamometer (1), particularly a balance, which has a system controller (SM10) that uses a measurement process (MP) to form an electrical force measurement signal (Wout) which corresponds to an acting force (Win); wherein steps are taken in the measurement process (MP) to compensate for interfering influences. According to the invention, the measurement process (MP) is at least partially mapped by an image process (BP) which has at least one image modulus (BM1, BM2,..., BMn) which maps a physical subprocess of the measurement process (MP) and creates the relationship between at least one physical input variable and at least one physical output variable. The image process (BP) is supplied with at least one process variable, such as an input variable, an intermediate variable and/or an output variable, at least one of which is load-dependent, for the measurement process, for which process variable the at least one image modulus (BM1, BM2,..., BMn) forms a corresponding physical reference variable (P, TM, TH, T1, T2) that is introduced into the measurement process (MP) as a process variable or is used to correct the process variable (TM, Wout) of the measurement process (MP).
The invention relates to a method for correcting the temperature of a force measuring apparatus (1) that is based on the principle of electromagnetic force compensation, particularly a scale, during normal measuring operation, comprising the following steps: generating an electric force measurement signal (mL) corresponding to a force that is acting on the force measuring apparatus using a load cell (10); generating an electric temperature measurement signal (mT) using a temperature sensor (15), which is disposed at a distance from the heat-generating components of the force measuring apparatus (1), said signal corresponding to the ambient temperature (Te) acting on the force measuring apparatus; processing the force measurement signal (mL) on the basis of the temperature measurement signal (mT) and the force measurement signal(mL) into a temperature-corrected output signal (mLc); transmitting the output signal (mLc) to a display unit (13) and/or a further processing unit (14). To this end, during the processing step based on the force measurement signal (mL) and/or the temperature measurement signal (mt), at least one corrective parameter (CP) used to correct the output signal (mLc) is calculated using a thermodynamic model, said parameter characterizing a temperature difference (dTr, dT1, dT2) that exists between a system temperature (Ts, Ts1, Ts2) and the ambient temperature (Te), or between a first system temperature (Ts1) and a second system temperature (Ts2).
G01G 3/18 - Aménagements pour compenser les variations de température
G01G 7/04 - Appareils de pesée dans lesquels l'équilibrage est assuré par une action magnétique, électromagnétique ou électrostatique, ou par des moyens non prévus dans les groupes par action électromagnétique avec des moyens pour la régulation du courant allant aux solénoïdes
G01G 23/01 - Test ou calibrage des appareils de pesée
18.
RESISTANCE NETWORK, FORCE MEASURING APPARATUS, AND METHOD FOR CALIBRATING THE FORCE MEASURING APPARATUS
The invention relates to a resistance network (50) for a force measuring apparatus (1), particularly a scale, having at least two electrical partial resistors (R1, R2, R3, R4) which are provided with gradual resistance values so that each different electrical wiring of the partial resistors (R1, R2, R3, R4) results in a different total resistance value (R) of the resistance network (50). The resistance network (50) is thereby provided with a coding switching element (SW) for wiring the partial resistors (R1, R2, R3, R4) so that different switch operation positions (POS) of the switching element (SW) can be assigned to different wirings of the partial resistors (R1, R2, R3, R4), and the number of partial resistors (R1, R2, R3, R4) is lower than the number of possible switch operation positions (POS).
G01G 3/14 - Appareils de pesée caractérisés par l'utilisation d'organes déformables par élasticité, p. ex. balances à ressort dans lesquels l'élément de pesée est constitué par un corps solide soumis à une pression ou une traction pendant la pesée utilisant la mesure des variations de la résistance électrique
G01G 3/142 - Circuits spécialement adaptés à cet effet
G01L 1/22 - Mesure des forces ou des contraintes, en général en mesurant les variations de la résistance ohmique des matériaux solides ou des fluides conducteurs de l'électricitéMesure des forces ou des contraintes, en général en faisant usage des cellules électrocinétiques, c.-à-d. des cellules contenant un liquide, dans lesquelles un potentiel électrique est produit ou modifié par l'application d'une contrainte en utilisant des jauges de contrainte à résistance
A method for testing a measuring instrument (10) for gravimetric moisture determination, wherein the measuring instrument (10) has a test chamber (30), a weighing device (40) with a sample holder (60) for determining the mass of the sample (62) that is located in the test chamber (30) in the measuring position, and at least one means for heating (31) the sample (62) that is placeable on the sample holder (60), wherein the method includes the following steps: placing a test sample (62) on the sample holder (60), determining starting mass m0 of the test sample (62), heating the test chamber (30) using a predefined temperature profile, measuring mass n\ of the test sample using the weighing device (40) after the test sample (62) has been heated according to a predefined temperature profile, comparing the measured mass n\ to a reference value of the mass mt., and outputting a signal corresponding to the result of the comparison.
G01N 5/04 - Analyse des matériaux par pesage, p. ex. pesage des fines particules séparées d'un gaz ou d'un liquide en éliminant un constituant, p. ex. par évaporation, et en pesant le reste
20.
CALIBRATION APPARATUS FOR A FORCE MEASURING APPARATUS, AND FORCE MEASURING APPARATUS
The invention relates to a calibration apparatus (40) for a force measuring apparatus (1), in particular a balance, having an electrically controllable force generating means (41) which can be coupled to a load cell (14) of a force measuring apparatus (1) in such a manner that a predefined force (Fc) can be supplied to the load cell (10), with the result that the load cell (10) generates a measurement signal (SF) which corresponds to the supplied force (Fc) and can be forwarded to a processing unit (60, PU) where it can be processed with respect to the predefined force (Fc). In this case, the calibration apparatus (40) has a calibration control unit (CCU) which is provided with at least one predefined parameter (P) which characterizes the force measuring apparatus (1) and/or the calibration apparatus (40), wherein the calibration control unit (CCU) can be connected to the processing unit (60, PU) via a communication link (52) in order to interchange information signals (SCD) with said processing unit, and the calibration control unit (CCU) is designed to use the information signals (SCD) and the parameter (P) to generate control signals in order to control the force generating means (41) therewith.
The invention relates to a load carrier having a receiving shell (211) for a flowable substance, having a calibration weight holder (210) for a calibration weight (5) and having a connection element (9) for connecting to a load receiver (6) of a load cell (1), characterized in that said receiving shell (211) is arranged between said connection element (9) and said calibration weight holder (210) and can be loaded by an execution in said calibration weight holder (210) by means of said flowable substance, and that said calibration weight holder (210) can be loaded independently of the loading condition of said receiving shell (211) by means of a calibration weight (5).
G01G 17/04 - Appareils ou méthodes pour peser un produit ayant une forme ou des propriétés particulières pour peser des fluides, p. ex. des gaz, des produits pâteux
G01G 21/22 - Plateaux de pesée ou autres récipients de peséePlates-formes de pesée
G01G 23/01 - Test ou calibrage des appareils de pesée
The invention relates to a sampling device and to a method for sampling a pressurized fluid and/or a fluid containing volatile components and to an analysis device. Said sampling device has a sampling housing (121, 521), an inlet (10, 110, 510), an outlet (11, 111, 511), a measurement cell (117, 317, 517), and a valve unit (118, 534) having a valve, which in a first position connects the inlet (10, 110, 510) to the outlet (11, 111, 511) through the measurement cell (117, 317, 517) and which in a second position connects the inlet (10, 110, 510) directly to the outlet (11, 111, 511) and disconnects the measurement cell (117, 317, 517) from the inlet (10, 110, 510) and the outlet (11, 111, 511), wherein the valve unit (118, 534) comprises at least one orifice that can be adjusted, wherein the flow rate of the fluid through the sampling device is controlled using said orifice.
G01N 1/18 - Dispositifs pour prélever des échantillons à l'état liquide ou fluide avec mesures prises pour diviser des échantillons en plusieurs parties
G01N 7/00 - Analyse des matériaux en mesurant la pression ou le volume d'un gaz ou d'une vapeur
23.
METHOD FOR MONITORING A POTENTIOMETRIC MEASURING PROBE
Method for monitoring a measuring probe that is in contact with a medium to be measured and detects a measured value (X) of the medium to be measured, wherein the method comprises determining and evaluating time-independent values of a first and a second parameter (P1, P2), wherein the first parameter (P1) responds faster than the second parameter (P2) to changes in a process to which the medium to be measured is subjected, and wherein both parameters (P1, P2) are probe-specific parameters.
A metering device comprises a base frame, at least one receiving device for receiving an arbitrary metering unit or functional unit that can be inserted into the receiving device, a holder, and at least one drive device. The holder comprises at least one holding spot for a metering unit or functional unit. In a lower horizontal plane of the base frame, a weighing cell is arranged, comprising a load receiver for receiving a target container. According to the invention, the metering device comprises a changing device by means of which the receiving device can be horizontally displaced relative to the base frame. Due to the horizontal displacement, a metering unit or functional unit can be removed from the holding spot by means of the receiving device and can be placed into the receiving device, or can be removed from the receiving device, and be put into the holding spot. Furthermore, the receiving device together with the drive device can be displaced relative to the base frame vertically to the filling opening of a target container placed on the load receiver, or from the filling opening of the target container to the holding spot by means of the changing device.
G01F 13/00 - Appareils pour mesurer par volumes et déverser des fluides ou des matériaux solides fluents, non prévus dans les groupes précédents
G01F 11/00 - Appareils qu'il faut actionner de l'extérieur, adaptés à chaque opération répétée et identique, pour mesurer et séparer le volume prédéterminé d'un fluide ou d'un matériau solide fluent à partir d'une alimentation ou d'un récipient sans tenir compte du poids, et pour fournir ce volume
G01G 13/02 - Moyens pour charger automatiquement des plateaux de pesée ou d'autres récipients, p. ex. récipients à jeter après usage, l'opération étant commandée par le mécanisme de pesée
The invention relates to a force measuring device (1,101,201,301,401,501,601) having a load application area, a fixed area, and a parallel guide area, which together are designed as an integral parallelogram guide, and having a fixed parallelogram leg (5,105,405) forming the fixed area, a moving parallelogram leg (6,106,206,306,406,606) forming the force application area, and an upper and a lower parallelogram guider (7,107,207,307,407,507,607; 8,108) which are connected at the ends of said parallelogram guiders to the parallelogram legs (5,105,405; 6,106,206,306,406,606) through flectional bearing points (9,10,11,12,409,611a,611b). The force measuring device (1,101,201,301,401,501,601) also comprises a force transmission area which transmits the force to a measuring transducer which operates according to the principle of electromagnetic force compensation. A scale pan carrier designed as a carrier arm (25,125,225,325,425,625) is monolithically integrated in the force application area in such a way that the carrier arm (25,125,225,325,425,625) extends as an integral continuation of the moving parallelogram leg (6,106,206,306,406,606) substantially parallel to the upper parallelogram guider (7,107,207,307,407,507,607) in the direction of the fixed parallelogram leg (5,105,405) beyond the flectional bearing point (11,611a, 611b) facing the moving parallelogram leg (6,106,206,306,406,606), wherein at least one seat (27,127a,127b,127c,227,327,427,527,627) for a scale pan (3,203,303,403) is arranged on the carrier arm (25,125,225,325,425,625).
G01G 3/14 - Appareils de pesée caractérisés par l'utilisation d'organes déformables par élasticité, p. ex. balances à ressort dans lesquels l'élément de pesée est constitué par un corps solide soumis à une pression ou une traction pendant la pesée utilisant la mesure des variations de la résistance électrique
The invention relates to a weighing vessel for weighing flowable substances, having a filling opening, a tubular jacket, and a base part. The base part is connected to the tubular jacket, and tightly seals the tubular jacket in the direction of gravity whenever the weighing vessel is in the operational position. A weighing vessel configured in such a manner may be placed on the weighing tray of a scale, and flowable substances may be filled into a cup without the substances leaking from the weighing vessel. According to the invention the base part may be opened by means of an exterior application of force onto the weighing vessel and/or by means of the effect of a solvent on the weighing vessel while forming a discharge opening. The weighing vessel otherwise sealed in the direction of gravity may be rinsed with a fluid while the discharge opening is open.
G01G 13/02 - Moyens pour charger automatiquement des plateaux de pesée ou d'autres récipients, p. ex. récipients à jeter après usage, l'opération étant commandée par le mécanisme de pesée
The method and device according to the invention fills a target vessel with a pre-defined target mass mz of a flowing substance from a reservoir by way of a metering device for the metered dispensing of the substance into the target vessel. The metering device comprises a valve that enables the variable adjustment of the mass flow ṁ from the reservoir to the target vessel. The metering device further comprises a time detector for determining the time t that has elapsed since the beginning of the filling process, a scale for determining the mass m of the substance located in the target vessel and a control unit comprising a valve control module for controlling the valve. The control unit comprises a correction module, wherein a desired mass flow ṁ* is stored in the correction module and if at time t the mass flow ṁ(t) is less than the desired mass flow ṁ*, the mass flow is increased by dṁ = |ṁ* - ṁ(t)| and if the mass flow ṁ(t) is greater than the desired mass flow ṁ*, the mass flow is reduced by dṁ.
G01G 11/08 - Appareils pour peser au passage un produit dont l'écoulement est continuAppareils de pesée pour bande transporteuse ayant des moyens pour contrôler le taux de remplissage ou de vidange
28.
METHOD FOR MONITORING THE STATE OF A FORCE-MEASURING APPARATUS, FORCE-MEASURING APPARATUS, AND FORCE-MEASURING MODULE
The invention relates to a method and an apparatus, which is suitable for said method, for monitoring the state of a force-measuring apparatus, in particular a weighing apparatus, having a moving force-transmission means which conducts a force acting on the force-measuring apparatus to a measurement transformer which generates a measuring signal which corresponds to the active force, said measurement signal then being displayed or forwarded for further processing. In this case, at least one parameter which characterizes the movement of the force-transmission means or the change in said force transmission means with respect to time is determined, the parameter is then compared with at least one threshold value and an action of the force-measuring apparatus is triggered as a function of said comparison.
G01G 3/14 - Appareils de pesée caractérisés par l'utilisation d'organes déformables par élasticité, p. ex. balances à ressort dans lesquels l'élément de pesée est constitué par un corps solide soumis à une pression ou une traction pendant la pesée utilisant la mesure des variations de la résistance électrique
G01G 23/01 - Test ou calibrage des appareils de pesée
G01L 25/00 - Test ou étalonnage des appareils pour la mesure des forces, du couple, du travail, de la puissance ou du rendement mécanique
29.
METHOD AND DEVICE FOR DETECTING FAILURES IN INDUCTIVE CONDUCTIVITY MEASUREMENTS OF A FLUID MEDIUM
The present invention discloses a method and device for detecting open-circuit and short-circuit failure in an electromagnetic (inductive) measurement of the conductivity of liquids. An electromagnetic measurement of the conductivity of a liquid is performed by immersing a sensor into the liquid, wherein the sensor includes at least 2 toroidal cores, one of them carrying an excitation coil and the other carrying an induction coil. When an AC excitation voltage is applied to the excitation coil, an induced current or voltage can be measured in the induction coil which is proportional to the conductivity of the measured liquid. The present invention discloses a method and device for detecting open-circuit and short-circuit failure on the sensor and cable wiring. Its concept is to add a very small DC current at the terminal of the excitation coil or induction coil in order to detect an open-circuit failure of the device, and to monitor the output swing of the excitation-driving circuit in order to detect a short-circuit failure of the device. The purpose is to improve the reliability of the measurement result.
The present invention discloses a method and device for the electromagnetic (inductive) measurement of the conductivity of liquids by immersing a sensor into the liquid, wherein the sensor includes at least 2 toroidal cores, one of said cores carrying an excitation coil and the other core carrying an induction coil. The method includes converting the induced current at the induction coil into an alternating square-wave voltage, followed by rectification. A sample-hold circuit is employed to avoid the transition time of the alternating square-wave current conversion. The demodulated DC voltage is proportional to the conductivity of the measured liquid. Thus, the precision of the measurement is improved significantly and the influence of the cable length is reduced to a minimum. The present invention also contains a method for correcting the error caused by the DC resistance of the sensor coil and the influence of the long cable resistance, which further increases the precision of the measurement.
The invention relates to a dosing device that can be used for powdery or paste-type products to be dosed, said device comprising a housing provided with at least one receiving region formed in the housing and used to receive the product to be dosed. The dosing device also comprises at least one dosing head comprising an elastic material and an outlet for the product to be dosed. In the unloaded state, that is without the action of a mechanical force or pressure, the outlet is tightly sealed from outside. Under the action of a force or a pressure, the outlet opens, the degree of opening varying according to the load. Furthermore, at least one mechanical actuating element used to open the outlet is arranged in the receiving region and/or in the dosing head.
G01F 13/00 - Appareils pour mesurer par volumes et déverser des fluides ou des matériaux solides fluents, non prévus dans les groupes précédents
B65B 1/06 - Procédés ou moyens pour remplir les réceptacles ou les récipients avec le matériau par pesanteur
B65B 1/12 - Procédés ou moyens pour remplir les réceptacles ou les récipients avec le matériau par alimenteurs rotatifs du type à vis
B65B 1/30 - Dispositifs ou procédés pour régler ou déterminer la quantité ou la qualité du matériau fourni ou chargé
B65B 3/08 - Procédés ou moyens pour charger le matériau dans les réceptacles ou récipients par alimenteurs du type à vis
B65B 37/10 - Approvisionnement ou alimentation des matériaux solides fluents, plastiques ou liquides, ou de masses en vrac, de petits objets, à emballer par alimenteurs rotatifs du type à vis
The invention relates to a windshield (1) for a balance, comprising a rear wall (2) and connecting sections (3, 4) extending from the upper corners of the rear wall towards the front and comprising guides (5, 6, 7) for a covering wall (8) and two lateral walls (9, 10). According to the invention, such a windshield (1) is improved in such a way that it is easily cleaned and the parts to be cleaned can be removed without requiring any tools. To this end, a front wall (11) can be inserted into a receiving area (12) on the lower side, can be pivoted until it is flush with the covering wall (8) and the lateral walls (9, 10), and can be secured in this position by locking elements (13) applied to the connecting sections (3, 4) on the front side.
The invention relates to a laboratory device having a housing comprising a weighing cell, said device having a work space connected to the housing and comprising a base, a cover, a rear wall, a front wall, and two side walls. A load charger is disposed in the work space and is connected to the weighing cell. A guide device is further connected to the housing, serving to guide a linear and simultaneously pivoting movement of individual regions of the front wall or of the entire front wall.
The invention relates to a calorimeter having at least one reactor (307, 407) for accepting a sample (301), and having a reactor jacket (309, 409) encompassing the reactor (307, 407), and having a reactor heater (302, 402) and a reactor cooling system, by means of which an internal reactor temperature is controlled, the reactor cooling system comprising a thermoelectric cooling element (303, 403) thermally connected to a coolant (304, 404), characterized in that the reactor cooling system and the reactor heater (302, 402) are different units that are both thermally connected to the reactor (307, 407) by means of the reactor jacket (309, 409).
G01K 17/04 - Calorimètres utilisant des méthodes de compensation
G01N 25/20 - Recherche ou analyse des matériaux par l'utilisation de moyens thermiques en recherchant la production de quantités de chaleur, c.-à-d. la calorimétrie, p. ex. en mesurant la chaleur spécifique, en mesurant la conductivité thermique
35.
METHOD FOR DETECTING MEASUREMENT VALUES IN A MULTIPLE FORCE MEASUREMENT APPARATUS, MULTIPLE FORCE MEASUREMENT APPARATUS AND FORCE MEASUREMENT MODULE
The invention relates to a method and the appropriate apparatuses for measurement value detection of a multiple force measurement apparatus, in particular of a multiple weighing apparatus, having at least two force measurement modules having in each case at least one force measurement cell and having at least one signal line which is used to transmit the measurement signals generated by the force measurement cells to an evaluation unit. Here, the measurement signal is modulated to a pulse-type transmission signal in the respective force measurement modules and said transmission signal is transmitted via the at least one signal line to the evaluation unit.
G01D 5/246 - Moyens mécaniques pour le transfert de la grandeur de sortie d'un organe sensibleMoyens pour convertir la grandeur de sortie d'un organe sensible en une autre variable, lorsque la forme ou la nature de l'organe sensible n'imposent pas un moyen de conversion déterminéTransducteurs non spécialement adaptés à une variable particulière utilisant des moyens électriques ou magnétiques influençant les caractéristiques d'impulsionsMoyens mécaniques pour le transfert de la grandeur de sortie d'un organe sensibleMoyens pour convertir la grandeur de sortie d'un organe sensible en une autre variable, lorsque la forme ou la nature de l'organe sensible n'imposent pas un moyen de conversion déterminéTransducteurs non spécialement adaptés à une variable particulière utilisant des moyens électriques ou magnétiques produisant des impulsions ou des trains d'impulsions en faisant varier la durée des différentes impulsions
The invention relates to an optochemical sensor element (9) for measuring gaseous or dissolved analytes, particularly oxygen. The sensor element (9) comprises a fluorophore (25) immobilized in a polymer matrix (23), the polymer matrix (23) being formed from a polymer having a non-aromatic backbone. The invention further relates to the use of the sensor element (9) in a measuring device.
A checkweight (1) for checking a gravimetric measurement instrument, in particular a balance, or for checking a further weight is provided with an identification. This marking, which is applied to the outside of the checkweight (1), has a permanently applied machine-legible identification code (2), which makes it possible to re-identify the individual weight piece as an individual item. This makes it possible to implement a method for back-tracing of an identifiable checkweight (1). A system for back-traceability of checkweights (1) has one or more readers (6) for detection of the marking, one or more processors (10) in which the machine-legible identification code can be converted back to an identification code which can be processed electronically, and one or more memory units, in particular a database (8), for storage of at least the data contained in the identification code.
The invention relates to an ion-sensitive semiconductor sensor for determining analytes dissolved in a fluid medium comprising a semiconductor structure having at least one transistor integrated therein. The transistor comprises an electron channel (2DEG) located between a first and a second connector (7, 8) and provided in the boundary area of a first and second semiconductor layer (4, 5), the conductivity of said electron channel being controllable by the potential of charges that may be supplied to a third semiconductor layer (6) adjoining the second semiconductor layer (5). According to the invention, at least the first and second semiconductor layers (4, 5) of the semiconductor structure are made of material from group III nitrides, in which atoms of a semiconductor element of group IV, such as silicon atoms, are at least partially embedded, whereby the radiation sensitivity of the sensor is reduced.
The invention relates to a method for determining the state of a force measuring device (200), particularly a weighing device, and to a suitable force measuring device comprising at least one force measuring module (244) having a load cell (210) and a communication means (248), and further comprising a terminal (206) and at least one communication line (212), via which communication signals (c) can be transmitted between the terminal (206) and the communication means (248). According to the invention, at least one electric potential (Vs) present on the communication line (212) and/or on the communication means (248) is measured, the at least one measurement value (M) and/or the processed results (R) thereof are transmitted via the at least one communication line (212) to the terminal (206), and from this a parameter of the state of the force measuring device (200) is determined. In this way, a state determination is achieved in a precise and simple manner.
The invention relates to a multiple-force-measuring device (200,300), in particular a multiple-weighing device, with at least two force-measuring modules (244,344) each having a force-measuring cell (210) and a power supply medium (245), and with a power supply unit (270,370). The power supply medium (246) of at least one force-measuring module (244,344) is connected directly or via a branching element (356) to a control cable (305) which is connected to the power supply unit (270,370), and wherein the at least two force-measuring modules (244,344) are connected directly to each other by means of a module connection cable (250,350) which serves as an extension to the power supply.
G01G 23/37 - Dispositifs indicateurs, p. ex. pour indication à distanceDispositifs enregistreursÉchelles, p. ex. graduées indiquant le poids par des moyens électriques, p. ex. par utilisation de cellules photo-électriques impliquant un comptage numérique
41.
ADJUSTABLE PARALLEL GUIDE ESPECIALLY FOR A GRAVIMETRIC MEASURING INSTRUMENT
The invention relates to a parallel guide comprising a vertically mobile parallel limb carrying a weighing scale, said limb being connected to a fixed parallel limb which is especially mounted in a scale in a fixed manner by means of two essentially horizontally oriented parallel guiding elements comprising elastic flexional bearings formed on the ends thereof. Preferably, at least one adjusting region is formed in the fixed parallel limb by other recesses, the recesses forming the adjusting region reducing the material thickness of the parallel limb in at least one suitable point, and forming at least one deformation point which can be plastically deformed by the action of an adjusting force, correcting a corner load error of the parallel guide.
G01G 3/14 - Appareils de pesée caractérisés par l'utilisation d'organes déformables par élasticité, p. ex. balances à ressort dans lesquels l'élément de pesée est constitué par un corps solide soumis à une pression ou une traction pendant la pesée utilisant la mesure des variations de la résistance électrique
42.
ADJUSTABLE PARALLEL GUIDE FOR COMPACT GRAVIMETRIC MEASURING INSTRUMENTS
The invention relates to a parallel guide that can be used in a gravimetric measuring instrument and comprises a fixed parallel limb which is vertically arranged in the operating state of the parallel guide and has an upper end region and a lower end region. The fixed parallel limb surrounds a mobile parallel limb having a central longitudinal axis extending vertically during operation. The parallel guide also comprises a first parallel guiding element fixed to the upper end region, and a second parallel guiding element fixed to the lower end region, said guiding elements enabling the mobile parallel limb to be connected to the fixed parallel limb and guided in a vertically mobile manner. The mobile parallel limb can be connected to a load receiver and to a load cell in such a way as to transmit a load. The upper end region and the lower end region are interconnected by means of at least one pair of bending points and/or at least one ball-and-socket joint and/or at least one annular constriction, the end regions being mutually pivotable about at least one pivoting axis in order to correct a corner load error.
The invention relates to a container unit for storing and protecting laboratory substances, comprising a protective housing and at least one metering unit. To establish the operational readiness of the metering unit(s), the protective housing can be removed. The aim of the invention is to achieve the simplest and safest possible handling and to provide the required protection for the laboratory substance contained within. To achieve this, at least one chamber filled with a treatment agent is provided in the protective housing. The chamber or chambers has or have a passage that is oriented towards the interior and said passage can be sealed in a gas-tight manner by means of a chamber seal. Preferably the chamber is already filled with the treatment agent and sealed in a gas-tight manner by means of the chamber seal during the production process for the protective housing.
G01F 13/00 - Appareils pour mesurer par volumes et déverser des fluides ou des matériaux solides fluents, non prévus dans les groupes précédents
G01G 13/02 - Moyens pour charger automatiquement des plateaux de pesée ou d'autres récipients, p. ex. récipients à jeter après usage, l'opération étant commandée par le mécanisme de pesée
B65D 51/30 - Fermetures non prévues ailleurs combinées avec dispositifs auxiliaires pour des buts autres que la fermeture avec réceptacles auxiliaires pour objets ou matériaux supplémentaires pour dessiccateurs
B65D 79/02 - Arrangements ou dispositifs pour indiquer un stockage ou un transport incorrects
44.
CONTAINER UNIT FOR STORING AND PROTECTING LABORATORY SUBSTANCES
The invention relates to a container unit for storing and protecting laboratory substances, comprising a protective housing and at least one metering unit. The metering unit(s) has or have a reservoir and a metering head. To establish the operational readiness of the metering unit(s), the protective housing can be removed from said metering unit. The protective housing has a lower part with at least one suitably shaped cavity for holding the metering unit(s) in a stable position and a cap-type upper part. The upper part can be connected to the lower part in order to form a gas-tight interior. The metering unit(s) is or are placed in the interior of the sealed protective housing for transport and storage purposes.
G01G 13/02 - Moyens pour charger automatiquement des plateaux de pesée ou d'autres récipients, p. ex. récipients à jeter après usage, l'opération étant commandée par le mécanisme de pesée
G01F 13/00 - Appareils pour mesurer par volumes et déverser des fluides ou des matériaux solides fluents, non prévus dans les groupes précédents
B65D 81/05 - Réceptacles, éléments d'emballage ou paquets pour contenus présentant des problèmes particuliers de stockage ou de transport ou adaptés pour servir à d'autres fins que l'emballage après avoir été vidés de leur contenu spécialement adaptés pour protéger leur contenu des dommages mécaniques maintenant le contenu en position éloignée des parois de l'emballage ou des autres pièces du contenu
45.
METHOD FOR MONITORING AND/OR DETERMINING THE CONDITION OF A FORCE MEASUREMENT DEVICE, AND FORCE MEASUREMENT DEVICE
In a method for monitoring and/or determining the condition of a force measurement device (100) with at least one housing (20) having an inner chamber (80), and with at least one force measuring cell (10) assembled in the inner chamber (80) of the at least one housing (20), the inner chamber (80) is filled with a gas that can be differentiated from gas of the external atmosphere, and at least one parameter of the gas composition (90) is measured by means of at least one sensor (50) arranged in the inner chamber (80) of the housing (20) or on the housing (20).
A powder-metering apparatus (1) for dispensing measured doses of a powder into a receiving container has a handling and positioning device (2) with a handling arm (3) designed to handle a metering device (4, 4a, 4b, 4c). The latter consists of a reservoir container (31, 31a, 31 b, 31 c) with a metering head (32, 32a, 32b, 32c) which has a discharge orifice (5, 6) and a flow-control element (34, 35, 36) to control the rate at which powder leaves the discharge orifice (5, 6). In particular, the powder-metering apparatus (1) is equipped with an impact device (11, 111) designed to shock the metering device (4, 4a, 4b, 4c) with upward-directed force pulses of high intensity and short duration.
B65B 1/22 - Réduction du volume du matériau à remplir par vibration
B65B 1/30 - Dispositifs ou procédés pour régler ou déterminer la quantité ou la qualité du matériau fourni ou chargé
B65B 1/12 - Procédés ou moyens pour remplir les réceptacles ou les récipients avec le matériau par alimenteurs rotatifs du type à vis
B65B 37/10 - Approvisionnement ou alimentation des matériaux solides fluents, plastiques ou liquides, ou de masses en vrac, de petits objets, à emballer par alimenteurs rotatifs du type à vis
B65G 65/46 - Dispositifs pour vider autrement que par le haut utilisant des transporteurs à vis
47.
METHOD AND DEVICE FOR MONITORING AND/OR DETERMINING THE CONDITION OF A MEASUREMENT PROBE
The method is used for monitoring and/or determining the condition of an electrochemical measurement probe (1) such as, for example, a pH-measurement probe, an oxygen measurement probe, or a CO2 measurement probe. The measurement probe (1) has at least one electrode (EL) and is suitable for measuring the ion concentration of a process material (6). According to the invention, during a charging phase (TL) a charge accumulator (Q2) associated with the electrode (EL) is charged by means of a charge transfer which is controllable via a control unit (CU). In a subsequent test phase (TT), the resulting electrode voltage (UE) is measured at least once and the measurement result is further processed.
A metering head (230) for pulverulent or pasty meterable material comprises a housing which has an outlet opening (239), a storage and passage point, and a receptacle (141) for connecting a discharge vessel (110) to the metering head. A feed duct (231) is formed in the housing. In addition, a closure shaft (135) is mounted at the storage and passage point such that it can be rotated about, and displaced along, its centre longitudinal axis and is connected to a closure element which is arranged in the region of the outlet opening (239). The volumetric flow of the meterable material through the outlet opening is controlled by means of the axial displacement of the closure shaft (135). The closure shaft (135) has a stop (241) which limits the displacement of the closure shaft (135) along its centre longitudinal axis. A mating stop (295) which is used to define the closure position is formed in the feed duct (231), in which closure position the stop (241) rests against the mating stop (295) and the outlet opening (239) is closed by the closure region of the closure element. At least one recess, peeling card (276), scraping edge, scraping face or cutting edge, which is used to remove meterable material, is formed on the stop (241) and/or on the mating stop (295).
G01F 13/00 - Appareils pour mesurer par volumes et déverser des fluides ou des matériaux solides fluents, non prévus dans les groupes précédents
G01G 13/02 - Moyens pour charger automatiquement des plateaux de pesée ou d'autres récipients, p. ex. récipients à jeter après usage, l'opération étant commandée par le mécanisme de pesée
A61J 3/00 - Dispositifs ou procédés spécialement conçus pour donner à des produits pharmaceutiques une forme physique déterminée ou une forme propre à leur administration
B65B 1/12 - Procédés ou moyens pour remplir les réceptacles ou les récipients avec le matériau par alimenteurs rotatifs du type à vis
The invention relates to a weighing device comprising a weighing cell and a receiving structure for receiving at least one weighing cell, wherein the at least one weighing cell is provided with a first fastening device for fastening in the receiving structure and the receiving structure is provided with a second fastening structure complementing the first. The fastening structures comprise a detent mechanism and the weighing cells are designed such that they are held with lockable and unlockable positive fit or released therefrom by means of simple actuation acting on the weighing cell in form of pressure in the direction of the load or in the form of pull opposite to the direction of the load.
A method for measuring the electrical conductivity of solutions, comprising the steps of: Exciting the electrodes (2) with an AC rectangular shaped, alternating current of a certain frequency fH through the connecting cable (3); synchronously rectifying (6) the responding voltage of the electrodes, calculating a first average of voltages, dividing the first average voltage by the current amplitude to obtain a first impedance RH; then exciting the electrodes with a rectangular shaped, alternating current of another frequency fli through the connecting cable; synchronously rectifying the responding voltage of the electrodes, calculating a second average of voltages, dividing the second average voltage by the current amplitude to obtain a second impedance RL. Based on the mathematical model, the relation between the resistance R between the electrodes to be measured and the first and second impedances RH and RL, and the ratio n of the frequency fH to fL is established, so as to derive the resistance R between the electrodes, then the conductivity of the solution can be further derived by incorporating the electrode constant. The electrical conductivity of the solution can be measured precisely even when the connecting cable between the electrodes and the measurement devices is very long and a certain degree of electrode polarization is present.
G01N 27/06 - Recherche ou analyse des matériaux par l'emploi de moyens électriques, électrochimiques ou magnétiques en recherchant l'impédance en recherchant la résistance d'un liquide
51.
A MEASURING METHOD AND APPARATUS FOR POTENTIOMETRIC MEASURING PROBES
The present invention has disclosed a method and device for measuring potentiometric measuring probes, said method comprises: feeding two test voltages comprising the harmonic wave Ueg with a base frequency fg and the harmonic wave Uer with a base frequency fr into the two cores of the connecting cable through voltage source impedances, respectively; the voltage between the indicating electrode and the reference electrode and the AC responding signal resulting from the two test voltages are passed to an amplifier and further to a transfer function unit having transfer functions (Hg, Hr), an A/D converter, a Fourier transformation unit, to calculate the potential Ux and the two test responses Ug and Ur, respectively; predetermining two calibration responses Uehg and Uehr, wherein Uehg comprises a product of Ueg and Hg, wherein Uehr comprises a product of Uer and Hr; establishing functional expressions for the test responses Ug and Ur, the internal resistances Rg and Rr are determined by simultaneously solving the equations comprising the unknown resistances Rg and Rr and capacitances C1 and C2. Accurate measurement of the internal resistance of the electrode can be achieved even with a relatively long connecting cable.
The invention relates to a metering element (30) on a container (10, 11) for flowable or bulk goods having an outlet nozzle (12) which protrudes into the metering element (30), comprising an inlet opening (32) on that side which faces the container (10, 11), a clamping profile (42) and/or a quick-action tensioning apparatus (46) for the releasable connection of the outlet nozzle (12) and the metering element (30), a slot-shaped outlet opening (34) in that side which faces away from the container (10, 11), an annular gap (22) between the outlet nozzle (12) and the inlet opening (32), a wall (36) which extends between the inlet opening (32) and the outlet opening (34) and has an inner side (37) and an outer side (38), and a film-shaped material (20) which is individual or is stored in the region of the outlet nozzle (12), in particular a plastic or elastomer film tube or film section. For uncontaminated use and simple cleaning, it is proposed that the inlet opening (32), the inner side (37) of the wall (36) and the slot-shaped outlet opening (34) are covered with the film-shaped material (20). In addition, a method for discharging batch or bulk goods is proposed, wherein a tubular film material (20) is fed into a metering element (30) via an annular gap (22), is then guided through the metering element (30) and is finally guided out of the metering element (30) via a slot-shaped outlet opening (34).
The invention relates to a metering element (10) for flowable and bulk materials, in a deformable, in particular elastic basic body, having a round inlet opening (11) and a slot-shaped outlet (21). On the side which lies opposite the inlet opening (11), an oval face (20) is provided, in which the slot-shaped outlet (21) is oriented in the longitudinal axis of the oval face (20). The outlet (21) can be widened in a variable manner by lateral pressure on circumferential points (12) in the region of the longitudinal axis of the oval face (20). The metering element (10) is preferably attached as a frustoconical connecting sleeve between containers and/or lines, in particular hoses.
A temperature measurement device comprises a reference voltage source, a three-wire thermal resistor, a voltage drop amplifier, an operational amplifier and compensation resistors R4 and R7. By using connecting wires with resistance values of the compensation resistors R4 and R7, the relation between the output signal ST and resistance of the thermal resistor RT gives rise to a monotonous function, which is independent of the resistances of the connecting wires. After A/D conversion of ST, the value RT and the temperature T can be calculated based on the known functions. Therefore, within the entire measurement range and any length of the cable, the influence of the wire resistances can be fully compensated without the necessity of switches or jumpers.
G01K 7/16 - Mesure de la température basée sur l'utilisation d'éléments électriques ou magnétiques directement sensibles à la chaleur utilisant des éléments résistifs
The invention relates to a calibrating weight system (4, 104) for electronic scales having a force transmission device (1, 201). Said system comprises a calibrating weight (3, 103) which can be coupled to the force transmission device (1, 201), a transfer mechanism and a drive for the guided movement of the calibrating weight (3, 103). Said drive has an actuator (18), interacting with the transfer mechanism, and at least one piezoelectric element (19) driving the actuator (18). Said piezoelectric element interacts with a driven wheel (17, 117) arranged in the center of the calibrating weight system and acting upon a shaft (26, 126) which is likewise arranged in the center. Said interaction takes place during an advance movement in a direction by way of a frictional contact that is iteratively established and released.
The invention relates to a load cell which is suitable for installation in a receiving structure together with a plurality of load cells of the same type. In said receiving structure, every load cell is arranged in an installation space the dimensions of which in a plane orthogonal to the load direction is delimited by the installation spaces of adjacent load cells and/or corresponds to the largest dimension of the associated load cell in said plane. The load cell comprises a calibrating weight system having at least one calibrating weight that can be coupled to the load cell, a drive and a transfer mechanism for the guided movement of the calibrating weight. The drive comprises an actuator that interacts with the transfer mechanism and at least one piezoelectric element that drives the actuator. The actuator comprises at least two elements that interact with each other during the advance movement in a direction by way of a frictional contact that is iteratively established and released.
brevets