Technical answers to the ClimaCORR® FR chest

Combination gas springs and pneumatics

Answer to:

Why did we choose this elaborate cover construction? Not only for physical reasons, but also for economic reasons, the demand arises to make the most of the refrigeration unit's performance. Of course, this requires the best possible insulation of the test room of a climatized room with frost phases and all other relevant areas and to avoid cold spots.

The aim of developing this high-performance tube was not only to reach the - 15 ° C in the shortest possible time, but also - 40 ° C. Achieving this achievement has already required considerable effort beyond increase exponentially at -15 ° C.

In this context, the seal of the lid has a special meaning.

Unlike hinged hinged lids, the ClimaCORR® chest's vertically movable lid drips no liquid onto the seal but back into the test room. In addition, a hinge opening would permanently damage the rear area of ​​the seal.

Why is the lid moved pneumatically with gas springs and compressed air?

The conceivable alternative of an electric drive involves the risk that the lid opened at that moment would fall off in the event of a power failure. The up and down movement is pneumatic with compressed air, the lid is guided in the linear units. The compressed air can also fail.

Hence the gas springs that hold the lid. The pneumatic drive offers in compressed air failure as opposed to the electric drive the ability to open the lid with a Fußluftpume, for. to get to the samples. Therefore, the connection hoses on the linear units on the rear are also freely accessible.

This combination of gas springs and pneumatic drive also serves another purpose of personal safety: even if one's hand was lying on the edge of the test room, the falling lid would not cause injury. Only when the lid rests on the edge is it pneumatically pressed onto the seal.

CWC system for controlled condensation requires double-shell lid

The condensation water test in accordance with DIN EN ISO 6270-2 CH requires condensation of the water vapor in the test room that is comparable to the single-shell standard equipment described there. For this, as is known, a temperature gradient or a cooling of the upper test chamber is required so that condensation occurs. With standard appliances, heat is released through the walls, door and roof. Therefore, the heat losses thus obtained depend strongly on the spatial conditions, e.g. Draft od