A dust protector for a weighing bar assembly (10), particularly usable under weighing platforms that comprises a structural body (1) defining two longitudinal ends, which comprise the dust protector (20), which, when projected in a top view, defines a C-shaped profile, comprising three plane rectangular plates (22, 23, 24) and three outer flaps (25, 26, 27), each of the flaps (25, 26, 27) extending perpendicularly from each of the plates (22, 23, 24), respectively, the flaps (25, 26, 27) being supported on the same support plane of the profile (21), enabling reduction in the accumulation of residues/debris on support portions of the weighing bar assembly (10), being easy to manufacture, mount and maintain, facilitating the cleaning of the assembly (10).

A dust protector for a weighing bar assembly (10), particularly usable under weighing platforms that comprises a structural body (1) defining two longitudinal ends, which comprise the dust protector (20), which, when projected in a top view, defines a C-shaped profile, comprising three plane rectangular plates (22, 23, 24) and three outer flaps (25, 26, 27), each of the flaps (25, 26, 27) extending perpendicularly from each of the plates (22, 23, 24), respectively, the flaps (25, 26, 27) being supported on the same support plane of the profile (21), enabling reduction in the accumulation of residues/debris on support portions of the weighing bar assembly (10), being easy to manufacture, mount and maintain, facilitating the cleaning of the assembly (10).

A protective device (10) for a weighing platform (1), particularly for weighing animals, the weighing platform (1) comprising a weighing plate that defines two longitudinal ends, wherein at each of the plate (2) ends a protective device (10) is arranged, which, when projected in side view, defines an L-shaped profile (11), the profile (11) comprising a lower end (12) that defines a base for supporting the protective device (10) and an upper end (13) that is mounted near end of the plate (12) of the weighing platform (1), being capable of barring dirt brought by the animals, preventing the accumulation of residues/debris under the platform (1), which might entail problems in the precision of the weighing or even lead to locking of the platform (10).

A protective device (10) for a weighing platform (1), particularly for weighing animals, the weighing platform (1) comprising a weighing plate that defines two longitudinal ends, wherein at each of the plate (2) ends a protective device (10) is arranged, which, when projected in side view, defines an L-shaped profile (11), the profile (11) comprising a lower end (12) that defines a base for supporting the protective device (10) and an upper end (13) that is mounted near end of the plate (12) of the weighing platform (1), being capable of barring dirt brought by the animals, preventing the accumulation of residues/debris under the platform (1), which might entail problems in the precision of the weighing or even lead to locking of the platform (10).

The invention relates to a weighing take-off (1) for weighing pharmaceutically active or toxic substances in a laboratory, comprising a housing (10), which defines a working space (19), wherein a front side of the housing (10) has a working opening (11) that is always open during proper use of the weighing take-off, a working plate (20), which bounds the working space (19) at the bottom, and an arm rest (40), which is arranged on a front edge of the working plate (20) in the region of the working opening (11), wherein a control panel (42) is integrated in the arm rest (40) in such a way that a surface of the arm rest (40) facing away from the working plate (20) is flush with a surface of the control panel (42).

A weighing apparatus includes a sample holder (20), a protective housing (14, 16, 18) with an access port (181) and a closure element (26), a reflection sensor (34) with a radiation emitter (37) emitting sensor radiation (38) reflected by a reflecting object (39) and with a radiation receiver (42) receiving a sensor radiation component (40), reflected by the object and a control unit (32), connected to a motorized drive (30) of the closure element and to the reflection sensor, and which controls the motorized drive with a reflection sensor signal, for transferring the closure element between closed and open positions. A differentiating element subjects a sensor primary signal (52) of the reflection sensor to a differentiation. The primary signal depends on a reflection intensity of the reflected radiation component and generates a sensor secondary signal (60). The control unit controls the motorized drive based on the sign of the secondary signal.

A weighing apparatus includes a sample holder (20), a protective housing (14, 16, 18) with an access port (181) and a closure element (26), a reflection sensor (34) with a radiation emitter (37) emitting sensor radiation (38) reflected by a reflecting object (39) and with a radiation receiver (42) receiving a sensor radiation component (40), reflected by the object and a control unit (32), connected to a motorized drive (30) of the closure element and to the reflection sensor, and which controls the motorized drive with a reflection sensor signal, for transferring the closure element between closed and open positions. A differentiating element subjects a sensor primary signal (52) of the reflection sensor to a differentiation. The primary signal depends on a reflection intensity of the reflected radiation component and generates a sensor secondary signal (60). The control unit controls the motorized drive based on the sign of the secondary signal.

A windshield for a balance which has a door that can be automatically opened and closed or half opened and half closed is provided. The windshield includes doors to which air cylinders are joined as driving means, sensors for monitoring movements of the doors, pressure sensors configured to monitor a pressure of air to be supplied to the air cylinders of the driving means, and a control unit configured to stop an air supply to the air cylinders when a pressure of air monitored by the pressure sensor exceeds a predetermined value. Stoppers are disposed on movement paths of the doors to block movement, and when air pressure inside the air cylinder increases to the predetermined value due to contact with the stopper, the door stops. The door can be freely fully opened and half-opened according to the position of the stopper.

A windshield for a balance which has a door that can be automatically opened and closed or half opened and half closed is provided. The windshield includes doors to which air cylinders are joined as driving means, sensors for monitoring movements of the doors, pressure sensors configured to monitor a pressure of air to be supplied to the air cylinders of the driving means, and a control unit configured to stop an air supply to the air cylinders when a pressure of air monitored by the pressure sensor exceeds a predetermined value. Stoppers are disposed on movement paths of the doors to block movement, and when air pressure inside the air cylinder increases to the predetermined value due to contact with the stopper, the door stops. The door can be freely fully opened and half-opened according to the position of the stopper.

A windshield for an electronic balance is provided which includes air cylinders incorporated inside as driving mechanisms, doors supported by a hanging manner by guide holes at least one end portion of which is open, and joint members interposed between the air cylinders and the doors. The joint members are also supported in a hanging manner in the guide holes, and upper portions of the joint members are joined to the air cylinders incorporated inside. The doors can be automatically opened and closed, and can be easily joined to and released from the driving mechanisms, and easily detached from the windshield by a simple structure.