Example 3: Mixer weighing

The total center of gravity S of the suspended container lies below the level of the load cells.

It is supported on 3 brackets, has an empty weight (dead load) of 2.8 t (2.76 tn. l.) and a maximum capacity of 4.5 t (4.43 tn. l.). To improve mixing of the individual components, an agitator is mounted on the container, which also operates during the weighing process.

To improve mixing of the individual components, an agitator is mounted on the container which also operates during the weighing process.

Selection of load cells and mounting components

We recommend using 3 SIWAREX WL280 RN-S SA load cells with a rated load of 3.5 t (3.45 tn. l.) because the high-quality WL280 RN precision load cell has an extremely low constructional height (for determination of rated load: please refer to introduction).

Container with agitator on SIWAREX WL280 RN-S SA load cell and elastomer bearing

Self-centering elastomer bearings are used as the mounting components to minimize the vibrations caused by the mixer.

The elastomer bearing permits a maximum oscillation path of ± 4 mm (0.16 inch).

An oscillation limitation is not necessary because there is a small gap of b = 3 mm (0.12 inch) between the container and the platform.

For wider gaps in other applications, endstops or external pendulum limiters must be provided.

Mixed weighing processes configurator (basic configuration)