Abstract: A force-measuring device 1, particularly a balance, operates on the principle of electromagnetic force-compensation. An electric coil 53 is arranged to be movable in a magnet system 50. The coil has at least two windings W1, W2 and a current supply device PB having at least two partial current sources PB1, PB2, the current sources each assigned to a corresponding winding. A device CU controls and/or regulates the current supplied to the windings by the partial current sources in such a way that, dependent on a force L acting on the force-measuring device, a current I1, I2 is sent through each of the windings. The sum of the at least two electromagnetic forces which are thereby generated forms the compensation force, while, at the same time, the power dissipated by the coil always takes on a given predetermined value Ptg.

Abstract: A device (110, 10) dispenses dosages of a free-flowing substance from a source unit (70) containing the substance. The device has a base unit (120, 20) and a receiving unit (130, 30), so that the source unit can be set into, and removed from, the receiving unit. An actuator (150, 50) generates repeated bidirectional pivoting movements of the receiving unit about the base unit. A connector unit (140, 40), arranged between the base unit and the receiving unit, pivotally supports the receiving unit, providing rotational mobility about a pivoting axis. The connector unit is slidably supported with translatory mobility relative to the base unit. The actuator generates repeated bidirectional translatory movements of the base unit. In this way, the receiving unit is subjected to repeated bidirectional pivoting movements and, superimposed on the latter, repeated bidirectional translatory movements.

Abstract: A dosage-dispensing element (30) on a container (10, 11) for free-flowing or pourable bulk materials has an outlet spout (12) that reaches into the element. The element has an inlet opening (32) on the side facing towards the container, a clamping profile (42) and/or a quick-tightening device (44) which makes a releasable connection between the outlet spout and the element, a slot-shaped outlet opening (34) on the side that faces away from the container, a ring gap (22) between the outlet spout and the inlet opening, a wall (36) extending between the respective openings with an inside (37) and an outside (38), and a foil-shaped material (20), especially a foil hose or foil section, stored in the area of the outlet spout. The inlet opening, the inside of the wall and the slot-shaped outlet opening are covered with the foil-shaped material.

Abstract: A draft protection device for a laboratory instrument according to the invention encloses a weighing compartment that surrounds a balance pan and includes a rear wall, a front wall, two sidewalls, a top cover with at least one opening, and a floor that is delimited by border edges. The top cover is connected at least to one of the two sidewalls and/or the front wall and/or the rear wall in an arrangement where the top cover and the walls connected thereto are vertically movable together in relation to the balance pan. In addition, the vertically movable wall(s) are vertically moveable past the adjacent border edge(s) of the floor. In any vertical position of the top cover, at least one of the sidewalls is horizontally slidable relative thereto.

Abstract: A draft protection device for a laboratory instrument. The device encloses a weighing compartment that surrounds a balance pan. The draft protection device includes a rear wall, a front wall, two sidewalls, a top cover, and a floor that is delimited by border edges. The draft protection device further includes at least one guiding means that is connected to the top cover and serves to guide the movement of at least one horizontally slidable sidewall, and/or a holder means that is connected to the top cover and serves to hold the front wall in place, wherein the guiding means and/or the holder means supports the weight of the at last one sidewall and/or the front wall in such a way that the wall(s) is pushed by a biasing torque against the floor of the weighing compartment. This torque is supported by the border edge facing towards the respective wall.

Abstract: A balance (100) has a balance housing (200), a balance pan (300), a weighing compartment (310) that contains the balance pan, a draft shield (400) with a fixed rear wall (210), the draft shield enclosing the weighing compartment, a system of balance electronics (500), a weighing cell (600) arranged below the weighing pan, and a weighing cell compartment (270) that encases the weighing cell. The weighing cell compartment is atmospherically connected by way of a hollow space (240) to the upper third of the weighing compartment. The balance electronics are arranged at the rear wall outside of the weighing compartment.

Abstract: A method, an arrangement and a program process a measurement signal generated in a measurement transducer of an electronic force-measuring device, particularly a balance. The generated measurement signal corresponds to the force acting on the transducer. The measurement signal is entered directly or by way of a pre-processing stage into a display function which assigns corresponding output values to the values of the measurement signal. The output values are subsequently presented in a display or passed on for further processing. The input range of the display function contains a capture range, so that the values of the measurement signal that lie within the capture range are assigned a common output value by the display function, and the position of the capture range within the input range is controlled dependent on the generated measurement signal.

Abstract: A refractometer has a housing (1), a measurement cell (8) arranged in the housing (1), and a lid unit (2). The lid unit has a base plate (3) with a cutout (7) allowing access to the measurement cell, and a lid (4) for covering the measurement cell. The lid is connected to the base plate by way of a hinge. The lid unit also has a lid insert (11, 17, 18, 28, 31, 35, 39) that is arranged replaceably in the lid. The lid unit (2) is detachably connected to the housing by means of a connecting element that is itself connected to the base plate.

Abstract: A dosage-dispensing device, which can be used for dosage materials in the form of powders or pastes, includes a housing with at least one receptacle compartment formed inside the housing for the purpose of holding the dosage material. The dosage-dispensing device further includes at least one dispensing head that comprises an elastic material and has an outlet for the dosage material. In the non-stressed condition, i.e. when there is no mechanical force or pressure acting on it, the outlet is tightly closed against the outside. When a force or pressure is applied, the outlet opens up, with the aperture width being variable, dependent on the applied force. Furthermore, inside the receptacle compartment and/or the dispensing head, there is at least one mechanical actuator element arranged through which the outlet can be opened.

Abstract: A check weight (1) that is used to check a gravimetric measuring instrument, specifically a balance, or to check a further weight, is provided with a means of identification. This marking which is applied on the outside surface of the check weight includes a permanently affixed machine-readable identification code (2) which makes the specific weight piece individually recognizable. This opens the possibility for a method whereby an individually identifiable check weight can be traced back in time. A system for tracing check weights back in time includes one or more reader devices (6) that serve to record the marking, one or more processors (10) wherein the machine-readable identification code can be converted back into an identification code that can be electronically processed, and one or more data storage units, in particular a database (8) serving to store at least the data contained in the identification code.

Abstract: A dosage-dispensing device has a drive unit and a receiver for a dosage-dispensing unit. The drive unit has a drive shaft. The dosage-dispensing unit has a delivery orifice with a closure element that is disposed in the delivery orifice. The closure element is coupled to the drive shaft when the device is in an operating state. The closure element provides the delivery orifice with an aperture cross-section that varies between a closed position and a maximally open position. To couple the drive shaft to the closure element and to open the delivery orifice, the drive unit linearly advances towards the dosage-dispensing unit. A closure spring holds the closure element in a closed position up to the point of complete coupling. To prevent premature opening of the delivery orifice during the coupling process, the drive shaft has limited linear mobility in a direction away from the dosage-dispensing unit.

Abstract: A method, and a device that is operable according to the method, for monitoring the condition of a force-measuring device, particularly a weighing device having a movable force-transmitting portion through which a force that is acting on the force-measuring device is transmitted to a measurement transducer that generates a measurement signal corresponding to the applied force, whereupon the signal is brought into the form of a display indication or passed along for further processing. In the method and device of the invention, at least one parameter is determined, which parameter characterizes the free mobility of the force-transmitting portion, or a change in the free mobility of the force-transmitting portion over time. The parameter is then compared to at least one threshold value, and based on the result of the comparison an action of the force-measuring device may be triggered.

Abstract: A dispensing head for a powder or paste dosage material has a housing with an outlet opening, a bearing- and passage area, and at least one socket connected to a source container. A feeder chute is formed inside the housing. A closure shaft is in the bearing- and passage area, free to rotate about and to slide along its central longitudinal axis. The closure shaft is connected to a closure element arranged near the outlet opening. Moving the closure shaft in the axial direction controls the volume flow of the dosage material through the outlet opening. A limit stop restricts the displacement of the closure shaft along its central longitudinal axis. In the feeder chute, an opposing stop defines the closed position where the limit stop rests in direct contact against the opposing stop and the outlet opening is closed off by the closure portion of the closure element.

Abstract: A device for dispensing a dosage material has a container with an outlet spout and a metering element adjoining the outlet spout. The metering element has an inlet opening on a side facing the container and an outlet opening on a side that faces away from the container. A wall of the metering element extends between the openings. A film material can be inserted into the device which passes at least through the inlet opening and the slot-shaped outlet opening and covers the inside of the wall. The device also has a feature that stretches a portion of a tube section of the film material. This stretching device includes at least two locations for fastening the portion to be stretched, the two locations being arranged on a stretch line that is at an angle to the lengthwise direction of the tube section.

Abstract: 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.

Abstract: An exemplary method for the temperature correction of a force-measuring device such as a balance is disclosed. The method includes generating, by means of a force-measuring cell, a force measurement signal corresponding to the input force; generating an electrical temperature measurement signal by means of a temperature sensor that is arranged at a distance from the heat-generating components of the force-measuring device, processing the force measurement signal into a temperature-corrected output signal based on the temperature measurement signal and the force measurement signal; and transmitting the output signal to an indicator unit and/or to a further processing unit.

Abstract: 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 includes means for optically splitting the field of view of the opto-electronic sensor system into a plurality of sectors. Each of these sectors covers at least a partial 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 uses only one opto-electronic sensor, but obtains multi-perspective imaging of the object.

Abstract: A draft shield for a balance, the draft shield having a rear wall and rails extending forward from the top corners of the rear wall. The rails contain guide tracks for a top cover panel and two sidewalls. A draft shield of this design allows for easy cleaning and also permits the parts to be cleaned to be removed without a tool. To this end, a bottom edge of a front wall of the draft shield is inserted into a seat, such that the front wall can then be pivoted into flush alignment against the top cover panel and the sidewalls and can be secured in this position by locking elements arranged at the front ends of the rails.