Abstract: A load cell (1) has a deformable body with upper and lower contact surfaces (3, 4), through which a force is introduced. Support points (5) of the contact surfaces define a line of action (6) of the force. At least one column-shaped portion (7) of the deformable body has a central longitudinal axis (8) and a circumferential surface whose generating line runs parallel to the central longitudinal axis (8). A first determining means (9) installed on the column-shaped portion converts a mechanical deformation into an electronic signal, and a second determining means (10) installed on the column-shaped portion converts a deviation of the central longitudinal axis (8) from the line of action (6) into a representative signal. Each determining means has at least one strain gauge.

Abstract: A device (14) allows a door of a balance draft shield enclosure (12) to be activated by a carrier fork (4) of a robot (5). The vertically movable draft shield door (13) sets open an access opening in a raised position and closes the opening in a lowered position. A door-lifter with a force-application element (41) is connected to the draft shield door for application of an upward-directed vertical force. A transmitting mechanism (15), standing clear of the balance (11) includes a force-receiving element (20, 21, 26, 27) that is moved vertically by the carrier fork, between upper and lower end positions. It further includes at least one direction-reversing element (22, 23, 24, 25, 29), coupled to the force-receiving element for coupling to the force-application element, a return spring (28), and a spring-biased locking latch (30).

Abstract: A thermo-analytical instrument, especially a differential scanning calorimeter has a sample position (201, 401) for receiving a sample (206), a reference position (202, 402), a heating means associated with the sample position and the reference position, a means for setting a predetermined temperature program of nominal values of temperature versus time, a first sensor (407) for measuring a sample temperature (TS) at the sample position, and a controller. The controller controls the heating power of the heating means so that measured sample temperature essentially follows the predetermined temperature program.

Abstract: The invention concerns a calibration device (40) for a force-measuring device (1), specifically a balance, with an electrically controllable force-generating means (41) designed to be coupled to a force-measuring cell (10) of a force-measuring device (1) in such a way that a predefined force (FC) can be applied to the force-measuring cell (10), so that the latter generates a measuring signal (SF) which correlates to the applied force (FC) and which can be transmitted to a processing unit (60, PU), where it can be processed in reference to the predefined force (FC).

Abstract: An instrument (1) for powderous or pasteous substances has a control unit (40) and a dispensing unit (50). The control unit is configured as a grip handle to be handheld. The dispensing unit is designed for removable seating in the holder device. A vertically movable shutter bolt (52) can open a discharge orifice (58). The control unit (40) has an actuator (20) directed at the shutter bolt, with a motor (21), a transmission (22), an actuator element (30) and a drive shaft (12), oriented vertically when operated. The drive shaft (12) can be engaged with the shutter bolt. Continuing and increased actuation of the actuator element moves the shutter bolt into an opening range where the shutter bolt opens up the discharge orifice to a variable, position-dependent extent, allowing the material to flow into a target vessel.

Abstract: 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).

Abstract: A head (5) is associated with a device (1) for dispensing measured dosages of a free-flowing material. The head has housing (3) with an interior space (59) with a fill opening (57) and a discharge orifice (62). A shutter bolt (80) is arranged in the housing to open and close the discharge orifice (62) and to loosen and advance the material. The head (5) has a dispensing position, in which the shutter bolt is oriented substantially vertically and a fill position. In the dispensing position, the material is dispensed through the discharge orifice (62). In the fill position, material is filled through the fill opening (57), which is positioned laterally on the housing when the head is in the dispensing position. A rest surface (51) is diametrically opposite the fill opening, so that the head lies on its rest surface in the fill position.

Abstract: An instrument (10) for gravimetrically determining moisture content has a housing (20), with a weighing device (40) arranged inside. The weighing device (40) has a load receiver (60) onto which a sample (62) is placed. The housing has a stationary housing part (21) and a movable housing part (22), the movable housing part alternately occupying a measuring position and a loading position. In the loading position, the respective housing parts are spaced apart from each other, allowing a sample to be put on the load receiver. In the measuring position, the respective housing parts form an essentially enclosed testing compartment (30) that surrounds the load receiver. A means (70), arranged in the testing compartment, heats a sample that is placed on the load receiver. The movable housing part is moved between the respective positions by a position-changing device.

Abstract: A force-measuring device (1) for a gravimetric measuring instrument has a stationary part (11) and a load-receiving part (12). Parallel guide members (14, 15) connect the receiving parts. The device also has at least one balance beam (19) connected to the load-receiving part through a coupling element (17) acting on a first lever arm (18) thereof, and which, at a second lever arm (20) thereof, is connected to a measurement transducer (22) which is arranged on the stationary part. Further levers (29, 30) can be arranged, respectively, between the first lever arm and the load-receiving part, and between the second lever arm and the measurement transducer. At least one sliding weight (23, 23A, 23B) is arranged on the at least one balance beam, wherein the position of each of the sliding weights present can be varied in a controlled way by means of at least one drive mechanism.

Abstract: An instrument (10) for gravimetric moisture determination has a housing (20) and a weighing device (40) arranged inside. The weighing device has a load receiver (60) onto which a sample (62) is placed. The housing has stationary (21) and movable (22) housing parts, the movable housing part alternately occupying a measuring and a loading position. wherein in the loading position the stationary housing part and the movable housing part are spaced apart from each other in such a way that a the sample can be put on the load receiver, wherein in the measuring position the respective housing parts form an essentially enclosed testing compartment (30) surrounding the load receiver (60), and wherein a sample-heating means (70) is arranged in the testing compartment to heat the sample on the load receiver. The instrument also has an electrical contact means (85) with first (86) and second parts (87).

Abstract: An instrument (10) for gravimetrically determining moisture content has a housing (20), with a weighing device (40) arranged inside. The weighing device (40) has a load receiver (60) onto which a sample (62) is placed. The housing has a lower, stationary housing part (21) and an upper, movable housing part (22), the movable housing part alternately occupying a measuring position and a loading position. In the loading position, the respective housing parts are spaced apart from each other, allowing a sample to be put on the load receiver. In the measuring position, the respective housing parts form an essentially enclosed testing compartment (30) that surrounds the load receiver. A temperature sensor (80) is arranged so that the temperature sensor is above the load receiver in the measuring position and is essentially to the side of the load receiver in the loading position.

Abstract: A gas analyzer for the absorption-spectroscopic in-situ determination of at least one chemical and/or physical parameter of a gaseous measurement medium, wherein the gas analyzer includes a first housing; at least one laser as a radiation source, which laser is arranged in the first housing; at least one first process window for coupling the radiation emitted by the laser into a measurement medium; and at least one detector by which, following interaction with the measurement medium, the radiation is detected. The first process window can be configured as an afocal meniscus lens having a convex surface and a concave surface.

Abstract: A parallel-guiding mechanism (120) has a movable parallel leg (121), a stationary parallel leg (122), a first parallel-guiding member (123) and a second parallel-guiding member (124). The parallel legs and the parallel-guiding members are connected to each other by flexure pivots, in the form of narrow material connections. There is at least one adjustment zone (135). An adjustment flexure fulcrum (136) is arranged between a flexure pivot (131) and a parallel leg. The adjustment zone is connected to the first lever end (138) of an adjustment lever (137). The adjustment flexure fulcrum forms the lever fulcrum (146) of the adjustment lever, which has an elastic domain with a section modulus that is smaller than a section modulus of the adjustment flexure fulcrum.

Abstract: A method and system for testing the functional capability of an analytical instrument uses first and second blind samples. Each blind sample is a test substance with an amount of a parameter to be tested that is unknown to the user. Each blind sample is provided with an identification means with a unique identification. When the blind samples are tested by the user in the instrument being tested, the measurement values obtained and the unique identifications read are compared against predetermined values that are accessible to a test program configured as software on the analytical instrument. By comparison of the measurement values and the predetermined values, the functional capability of the analytical instrument is determined and the result is transmitted to an output unit of the analytical instrument.

Abstract: A method of manufacturing a reference electrode which has a shaft into which a diaphragm body of a porous ceramic is incorporated is comprised of the following method steps: Impregnating the ceramic with a lyogel precursor prior to incorporating the ceramic body into the shaft, and subsequently transforming the lyogel precursor into a lyogel, from which the solvent is removed through a drying process. A reference electrode has a shaft that is filled with electrolyte, and a diaphragm body formed of a porous ceramic and containing a system of hollow spaces is incorporated into the wall of the shaft. The system of hollow spaces is filled at least partially with a material that is formed of a lyogel by drying and has at least one component that corresponds to the ceramic material.

Abstract: A device is disclosed for preparing a solution of a solid with a liquid and/or a dilution of a liquid with another liquid includes a balance with a weighing pan, a display- and operating unit, a processor, a storage memory, and a data interface. The device includes at least one electronic dosage delivery device for liquids, in particular an electronic pipette, with a microprocessor, a memory unit, and a data interface, so that a communication can be established between the respective data interfaces of the balance and the at least one electronic dosage delivery device. An identifier element signals when the electronic dosage delivery device has been selected. A program is configured to perform calculations in the processor of the balance based on instructions given by the attendant, based on substance data stored in the memory of the balance and in certain cases based on weighing results.