Weighing Cabin

Weighing Cabin
Weighing Cabin WK functional Drawing

Weighing cabins

protect the operating personnel when weighing or filling products containing active agents. The weighing precision is not affected. At the same time, the products are kept sterile and particle free.

The weighing cabins can be used for on-site tables as well as floor scales. Weighing cabins operate with low-turbulence displacement flow and fulfill the DIN EN ISO 14644-1 class 5.0 requirements or M3.5 (100) according to US Fed. Standard 209E.

  • Stable, aesthetically pleasing, inexpensive system
  • Short lead time and quick installation without customization
  • Easy dismantling and relocation
  • Very suitable for unique solutions

Mohandoss Manikant
Head of Sales India & Middle East

Phone: +49 711 8804-1791

Mobil: +49 174 9097767


Felix Hirt
Head of Sales

Phone: +49 711 8804-2597

Mobil: +49 1749407118


Constructive Design

Weighing cabins have a rectangular housing design whose upper horizontal segment is supported at the end with pedestals on both sides. Instead of the pedestals, the ceiling module can be suspended from the ceiling on-site. The installed spped controlled radial fan takes in the air through a prefilter positioned near the floor and pushes the air through an HEPA-filter and air discharge element 6 into the work area, flushing the area with a clean air and a low-turbulance vertical displacement-flow. Transparent PVC curtains are utilized for the side partion of the working area. The front side (operating side) remains open.

In order to maintain negative pressure in the cabin work area the return air collected at the prefilter is set to be larger than the supply air-flow from the discharge element. The additional air-flow portion is taken from the room containing the cabin. It flows in through the open operating side. For air balance the same rate of exhaust air is returned through the HEPA filter into the room where the cabin is located (option: connection to on-site exhaust-sytem), preventing the discharge of harmful substances into the room.

The light sytem ensures an even illumination of the entire work area. The discharge element is used to laminarize the unidirectional displacement flow and is available as a fine-mesh polyester fabric or as perforated stainless steel plate. The influences and the fabric option ensure the best laminar flow and due to its transparency the lighting can also be positioned above the discharge element.

Depending on weighing cabin use - for floor or table scales - the prefilter is placed at various heights.


  • Stable, aesthetically pleasing, inexpensive system
  • Short lead time and quick installation without customization
  • Easy dismantling and relocation
  • Very suitable for unique solutions
  • Can be used as a laminar flow or turbulent air system
  • Designed according to GMP- or FDA-guidelines, available for pharmaceutical
  • Vertical, low-turbulence displacement flow
  • Applicable for on-site table or floor scales
  • Compact, operational unit
  • Available in several standard sizes or other dimensions on request
  • Housing, discharge element and side partitions are available in different materials
  • Two-stage prefilter with G4 filter mat and F7 filter cassett
  • HEPA filter H14 filter for supply air and exhaust air
  • Installed radial fan with speed-controlled drive motor
  • Measuring system for pressure differential and volume flow or air velocity
  • High operational safety due to permanent supervision of air velocity and air-flow rate

The weighing cabins are installed complete and delivered ready for operation. Each unit undergoes a thorough internal manufacturing inspection. Discharge velocity of the low-turbulent displacement flow is approx. 0,45 m/s during operational time. The velocity can be reduced outside the operational time e.g. at night and during non-business days, down to 0,25 m/s through a night-day switch (optional).
The functionality and the safe operation of the weighing cabins during the practical operation remains guaranteed, due to the constant monitoring of the supply-air volume flow, by means of an integrated volume-flow measuring system as well as the readjustment of the fan-output manually at the switch and control unit.