Abstract: An optical arrangement has a light source, which emits a light beam along a first optical axis. A first reflector is provided, and a second reflector reflects light reflected by the first reflector. The first reflector has a transverse offset from the first optical axis to reflect light along a second optical axis which has a parallel offset of two times the transverse offset of the first optical axis. The second reflector reflects the light beam back to the first reflector along a third optical axis having a parallel offset with a fixed amount in a fixed transverse direction in relation to the second optical axis. The light beam is reflected by the first reflector along a fourth optical axis which has a parallel offset in relation to the first optical axis with a fixed amount counter to the fixed transverse direction.

Abstract: A weighing device (10) has a base body (11), a weighing chamber floor (15), a weighing chamber rear wall (25), and a draft shield (20). The draft shield has a top wall (23), a first side wall (22L), a second side wall (22R), and a front wall (24). The weighing chamber floor, the weighing chamber rear wall, and the draft shield act together to enclose a weighing chamber (W). The weighing chamber rear wall has a first side (35) facing the draft shield and a second side (36), opposite the first side. A mounting unit (30) is movably connected to the first side of the weighing chamber rear wall and a position control unit (50) is operatively connected thereto, on the second side of the weighing chamber rear wall. An elongate slot (40) that passes through the rear wall receives the mounting unit about the first side and guides the mounting unit in a direction normal to the base body.

Abstract: Cargo objects, in a freight-related environment, are dynamically dimensioned while being held at a cargo-handling position of a vehicle. A three-dimensional model is obtained comprising points representing surfaces of the vehicle. Using the model, the position of a point of reference of a first wheel of the vehicle is obtained, as is the position of a split point relative to the position of the first wheel point of reference. A driving direction of the vehicle is obtained. A splitting plane is determined, which passes through the split point and is perpendicular to the driving direction. A three-dimensional model of the cargo is determined by subtracting, from the vehicle three-dimensional model, the points that are positioned on the side of the splitting plane opposite to the side of the splitting plane that make up the first wheel point of reference. The volume is then determined from the cargo three-dimensional model.

Abstract: A laboratory balance (1) has a housing, a base body (2) with an upper side (20) facing a weighing pan (14) and an underside (21) facing in the opposite direction of the upper side (20). A draft shield (5) is mounted on the upper side of the base body. The draft shield has a top wall (6), a first sidewall (7), a second sidewall (8) that is to the first sidewall, and a front wall (9). The first sidewall is operated by a first motor unit (25) which is located in the base body. The underside has a first opening (37) that provides access to the first motor unit.

Abstract: A laboratory balance (1) has a base body (2), a weighing chamber (10) with a weighing chamber floor (3), a weighing chamber rear wall (4), and a draft shield (5,5?,5?). The draft shield has a top wall (6), a first side wall (7), a second side wall (8) arranged parallel to the first side wall, and a front wall (9). The weighing chamber floor, the draft shield and the weighing chamber rear wall act together to enclose the weighing chamber. The weighing chamber rear wall has a modular construction, with at least a base module (15) and a top module (16,16?,16?). The base module is connected to the base body, and the top module is connected to the top wall of the draft shield.

Abstract: A draft shield (5?) is provided for a laboratory balance (1) with a base body (2), a weighing chamber (10) with a weighing chamber floor (3) and a weighing chamber rear wall (4). The draft shield has a top wall (6), first and second side walls (7, 8) and a front wall (9). The draft shield, the weighing chamber floor and the weighing chamber rear wall enclose the weighing chamber. A drive unit (19) connected to the top wall serves to open and close the top wall (6). The weighing chamber rear wall has a base module (15) and a top module (16?), at least a portion of which is configured as a compartment. The drive unit is arranged in the compartment-shaped portion.

Abstract: A balance (10) has a mounting unit (30) movably connected to a first side (35) of a rear wall (25) of a weighing chamber. The mounting unit is above a top wall (23) of the weighing chamber. An elongate slot (40) extends from the first side through a second side (36) and receives the mounting unit and the top wall. The elongate slot guides the mounting unit and the top wall in a direction normal to a base body (11) of the balance. A position control unit (50), on the second side, has lower and upper carriages (52, 54). The upper carriage is connected to the mounting unit and the lower carriage is connected to the top wall. A stopper (64) limits the lower carriage at a predetermined position away from the base body, while allowing the upper carriage to advance therebeyond, separating the mounting unit from the top wall.

Abstract: The present disclosure relates an interface unit having an input for receiving an input voltage from an electrochemical measuring probe; a first transistor; a first operational amplifier; a second transistor; and a second operational amplifier. The first operational amplifier is arranged to provide a variable tension to a first source terminal of the first transistor, in accordance with a comparison between a reference voltage and a second resistor voltage, in order to control an operating point of the first transistor.

Abstract: A density measuring device has a hollow body (1) for receiving a fluid medium. The hollow body includes at least two parallel tube sections (6, 6a, 7, 7a) with a connecting line (9) on a first end thereof that connects the tube sections in a U shape. On a second end, the hollow body has a clamping element (2) with a clamping tube (5, 5a) terminating each of the tube sections. An excitation device including a piezoelectric element (4) oscillates the tube sections and a sensor device, also with a piezoelectric element (4a), detects a variable characterizing an excited vibration. Both piezoelectric elements are attached to a contact area (3, 3a) of the clamping element. The contact areas are disposed on the proximal end of the clamping element relative to the tube sections. Each contact area extends across both clamping tubes.

Abstract: A laboratory balance (1) has a weighing pan (14) in a weighing chamber (10). A rear wall (4) separates the weighing chamber separates from a housing (11) that contains a weighing cell (12) with a load-receiving structure (13). A suspension pin (27) extends in a transverse direction of the load-receiving structure. The weighing pan is engaged with the load-receiving structure through at least one passage opening (31) in the rear wall. Two spaced-apart sidebars (29) of the weighing pan are held together by a connecting member (30). Each sidebar has an L-shaped configuration with a horizontal foot portion (55) and a vertical leg portion (56). A hook-shaped portion (64) of the vertical leg is seated on the suspension pin, through sliding contact between the suspension pin and a guiding portion (65) that extends from the hook-shaped portion away from the horizontal foot portion, sloping upwardly.

Abstract: A mechanism (10) for an automated Karl Fischer (“KF”) titration system (1) includes a support console (6), a first vertical guide rail element (11), solidly attached to the support console, and a carriage unit (12), slidably constrained to the first vertical guide rail element, allowing the carriage unit a first degree of linear vertical mobility relative to the support console. The carriage unit holds a vial lift unit (13) with a lift platform (14) for a sample vial (18). The carriage unit, in a downward movement phase, lowers the lift platform from a starting position into an oven cavity of the titration system. A subsequent upward movement phase raises the lift platform to the starting position. A second vertical guide rail element, solidly connected to the lift platform and slidably constrained to the carriage unit, enables a second degree of linear vertical mobility of the lift platform.

Abstract: An sensor (2) based on an optical-sensing technique measures gaseous or dissolved analytes in a measurement medium (4). The sensor has a sensor housing (6) and an optochemical sensor element (20, 220) arranged within the sensor housing. The optochemical sensor element (220) has a substrate (222), a sensing layer (224) and a barrier layer (230). The barrier layer is arranged to protect the optochemical sensor element from interfering substances (234) present in the measurement medium.

Abstract: Measurement unit for an ion-sensitive solid-state electrode, that serves to measure pH in a measurement solution, with a layered structure including an ion-sensitive glass layer with a first ring-shaped contact surface, an electrically conducting layer that directly or via at least one intermediate layer adheres to the ion-sensitive glass layer, and a substrate that adheres to the electrically conducting layer and is provided with a second ring-shaped contact surface; and with a holding member that is provided with a first ring-shaped sealing surface, a second ring-shaped sealing surface, and an annular section; wherein the first ring-shaped sealing surface is sealingly connected to the first ring-shaped contact surface, wherein the second ring-shaped sealing surface is connected to the second ring-shaped contact surface of the substrate, and wherein the first and second ring-shaped sealing surfaces of the holding member are sealingly connected by the annular section.

Abstract: An ion-sensitive electrode, that serves to measure an ion activity in a measurement solution, in particular a pH value, is configured with a layered structure including a glass layer as ion-sensitive glass membrane, and a substrate as first holding member, which directly or via at least one intermediate layer adheres to the ion-sensitive glass membrane, wherein the ion-sensitive glass membrane is held under compressive stress by the first holding member over the whole range or part of the range of the specified operating temperature of the ion-sensitive electrode.

Abstract: A receiving vessel (21) for the gravimetric calibration and verification of pipettes, whose purpose is to be placed on a load receiver (33) of a balance (40) and to receive and hold test liquid (29) discharged from pipettes that are being calibrated or verified, is configured as evaporation-trapping device, wherein the receiving vessel includes a beaker (22), a lid (23) with a passage opening (25), and a receiving tube (28) that is held in place in the passage opening, passing through the latter into the interior of the beaker. The receiving vessel is adapted to mechanically engage the weighing pan or load receiver when the receiving vessel is set on the weighing pan or load receiver. This ensures a secure placement of the receiving vessel in a defined, reproducible position on the weighing pan or load receiver.

Abstract: An analytical device has an oven arrangement (1) with an oven (2), an insulation system, a ventilation system and a housing. The ventilation system has a first convection system that uses natural convection, arranged to keep the housing cool, as well as a second convection system that uses forced convection, arranged to reduce the temperature in the oven (2). In particular, the analytical device is a component of a Karl Fischer titration instrument.

Abstract: The operation of a measuring probe used for measuring at least one property of a process material is monitored or determined while the measuring probe is in use. The measured property can be a pH measurement, or a CO2 or oxygen concentration of the process material. The measuring probe has an electrode with a sensing element. When the sensing element is in contact with the process material, the electrode delivers a measurement signal to the measurement signal circuit, where the electrode voltage is related to the measured property. The signal-processing unit determines a measurement quantity of the measured property using the measurement signal. When a test signal is delivered by the signal source to the test signal circuit during a verification phase, a coupling element ensures galvanic isolation between the measurement signal circuit and the test signal circuit.

Abstract: A load cell is provided with protection against damage from overload. The load cell has a load receiving member, a main member and a load transmitting member. The main member has a movable portion, a fixed portion and a first parallel guiding member for connecting the fixed portion and the movable portion. The load transmitting member has a first mounting portion for mounting the load receiving member, a second mounting portion for mounting the movable portion and a parallel guiding member for connecting the first mounting portion to the second mounting portion. The first mounting portion is movable vertically relative to the second mounting portion when a load being applied on the first mounting portion. The load-transmitting member is a single piece. The load cell also has a stop portion for preventing the first mounting portion from further moving downwardly for overload protection.