A housing for a laboratory device, having floor, ceiling, rear, side, and front walls, which together form an operating chamber, wherein the front wall is movable upward and downward between a lowered closed position and a raised open position in a linear and simultaneously pivoting manner and, in the open position of the front wall, the operating chamber is open on the front side of the housing. The top wall section having top and bottom wall sections connected about a first pivot axis and transitions in an arc shape to a plate-shaped connection section extending at an angle to the top wall section, or is connected thereto in an angularly rigid manner, and a connection section is hinged in a pivoting manner to the ceiling on the edge thereof distant from the top wall section parallel to the first pivot axis, at a distance from the front wall.

A scale with a weighing system (14), a weighing chamber (16) that is delimited by a windshield (18), and a drive for opening and closing the windshield (18). The scale has a load transferring part (32, 34) with which the weight of the load is transferred onto the weighing system (14). A decoupling mechanism is mechanically connected to the drive for rotating the windshield (18) such that the weighing system (14) is mechanically decoupled from the load transferring part in the load direction if the windshield (18) is open in order to not introduce transverse forces into the weighing system (14) during loading of the weight.

A gravimetric measuring device includes a weighing chamber with a vertical weighing chamber wall, which is formed as a support structure (14) with cover modules (28) detachably fixed thereto on the weighing chamber side, each cover module (28) having, on its weighing chamber side, a module front wall (30) covering the support structure (14) at least partially. The cover modules (28) have locking cantilevers (38) directed towards the support structure such that the locking cantilevers (38) are provided with vertically directed through-openings (40) which are aligned with corresponding through-openings (20, 22) of the support structure (14). The cover modules (28) are locked to the support structure (14) with locking rods (42) which pass through the mutually aligned through-openings (40; 20, 22) of the cover modules (28) and the support structure (14).

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).

A precision balance including a weighing chamber (16), a draft shield (18, 20, 22) which surrounds the weighing chamber, a climate module (34) which is detachably disposed in the weighing chamber, a processor (32), a data input unit, and a data transmission path over which data is exchanged between the climate module and the processor. The processor has a measurement uncertainty determining module (33) with which the measurement uncertainty of the balance is determined. Also disclosed are a method for determining a measurement uncertainty of a balance and a climate module 4 that forms a self-contained modular unit, and includes an air pressure sensor (62), an air humidity sensor (54) and an air temperature sensor (52). A data transmission path transmits data to a processor external to the climate module.

Provided is a windshield for a balance, for which opening and closing doors of the windshield are smoothly moved without wobbling, dust or the like is unlikely to accumulate on the part of guide rails that guide the opening and closing doors, and cleaning is easy. Upper portions of the pair of opening and closing doors of the windshield are respectively suspended by upper frames provided along respective side portions of an upper surface door, and the opening and closing doors are reciprocated by air cylinders by being guided by guide rails each formed of a horizontal portion and a vertical portion. On the respective horizontal portions, projections that restrict lower ends of the respective opening and closing doors from being displaced in separating directions from the vertical portions are provided along movement paths of the respective opening and closing doors.

A windshield for a balance is provided, and the windshield to be attached to a balance to define a weighing chamber, includes openable and closable doors constituting portions of the weighing chamber, opening and closing mechanisms configured to open and close the doors, sensors configured to detect movement of the doors, and a control unit configured to command the opening and closing mechanism to open and close the door when a movement of the door from a stationary state is detected by the sensors. When an operator slightly moves the door from a stationary state to open or close the door, the sensor detects this, and the door is automatically opened or closed.

The windshield includes an outer windshield defining a weighing chamber, and an inner windshield disposed inside the outer windshield and covering the weighing pan, the outer windshield includes a pair of left and right sliding doors openable and closable in side surfaces, and the inner windshield is provided with an opening in a surface facing one of the sliding doors, and a shielding wall is provided at a lower portion of the opening. An air flow generated when the sliding door of the outer windshield is opened or closed moves along a floor surface of the outer windshield toward the weighing pan, but is blocked by the shielding wall and does not flow into the inside of the inner windshield.

A windshield (8) including a pair of right and left sliding doors (13) and (14) is provided above an accommodation case (5) in which a weighing mechanism joined to a weighing pan (2) is disposed, the sliding doors (13) and (14) are slidably suspended and supported, and are linked to each other in an engageable and disengageable manner at their lower portions by a linkage mechanism including connection members (31) and (32), engagement/disengagement members (33) and (34), and a joint plate (60), and an air cylinder including a piston rod linked to the joint plate (60) and a pump as a drive source of the air cylinder are provided in the accommodation case (5). Since it is not necessary to separately provide a space for accommodating the air cylinder and the pump, the electronic balance (1) can be downsized.

An electronic balance includes a weighing pan, a windshield, door opening and closing mechanisms configured to automatically open and close doors of the windshield, a weight sensor, a built-in weight, a weight applying and removing mechanism for the built-in weight, and a control unit, the control unit obtains a first standard deviation measured while the doors of the windshield are left closed, and a second standard deviation measured accompanied by a series of opening and closing operations consisting of opening the door by the door opening and closing mechanism, loading the built-in weight by the weight applying and removing mechanism, closing the door by the door opening and closing mechanism, acquiring weighing data of the built-in weight, opening the door by the door opening and closing mechanism, unloading the built-in weight by the weight applying and removing mechanism, and closing the door by the opening and closing mechanism.