Draft protection device for a laboratory instrument, providing a weighing compartment of adjustable volume

A draft protection device for a laboratory instrument, the device enclosing a weighing compartment surrounding a balance pan and comprising:

• a floor delimited by border edges;
• a rear wall;
• a front wall;
• two sidewalls;
• a top cover with at least one opening, the top cover connected to at least one of the two sidewalls, the front wall, and the rear wall such that the top cover and the wall(s) connected thereto are together moveable up and down relative to the balance pan, the wall(s) connected to the top cover being vertically movable past a respective adjacent border edge(s) of the floor;
• and
• at least one drive mechanism for producing horizontal movement of at least one sidewall;
• wherein, in any vertical position of the top cover, at least one sidewall is also slidable in a substantially horizontal direction relative to the top cover.

A draft protection device for a laboratory instrument, the device enclosing a weighing compartment surrounding a balance pan and comprising:

• a rear wall;
• a front wall;
• two sidewalls;
• a floor delimited by border edges, the floor sloping downward from a centroid of a surface area thereof towards at least one of the sidewalls;
• and
• a top cover with at least one opening, the top cover connected to at least one of the two sidewalls, the front wall, and the rear wall such that the top cover and the wall(s) connected thereto are together moveable up and down relative to the balance pan, the wall(s) connected to the top cover being vertically movable past a respective adjacent border edge(s) of the floor;
• wherein, in any vertical position of the top cover, at least one sidewall is also slidable in a substantially horizontal direction relative to the top cover.

A draft protection device for a laboratory instrument, the device enclosing a weighing compartment surrounding a balance pan and comprising:

• a rear wall;
• a front wall;
• two sidewalls;
• a floor delimited by border edges;
• and
• a top cover with at least one opening, the top cover connected to at least one of the two sidewalls, the front wall, and the rear wall such that the top cover and the wall(s) connected thereto are together moveable up and down relative to the balance pan, the wall(s) connected to the top cover being vertically movable past a respective adjacent border edge(s) of the floor, the top cover sloping downward from one or more of the front wall and sidewalls towards a centroid of a surface area thereof;
• wherein, in any vertical position of the top cover, at least one sidewall is also slidable in a substantially horizontal direction relative to the top cover.