Filling can be divided into two main technologies - volumetric or gravimetric. This means that the desired quantity is either measured by volume or by weight.
Volumetric filling machines
Volumetric filling machines are based on a self-priming cylinder. A piston is moving inside this cylinder and the stroke length and diameter of the piston determines the filling volume.
Gravimetric filling machines
Gravimetric filling machines are weighing the exact weight using a valve that is placed over an electronic scale. The scale in combination with the weighing program controls the valve operation resulting in a weighing process.
Which method you should use depends on different factors:
- Product properties - If the product contains e.g. air bubbles, volumetric filling is normally not recommended.
- Desired volumes- For volumes above 20 ltr. we always recommend a gravimetric solution.
- Available budget - A gravimetric solution is in general more expensive.