Unevenness of the contact surface
A surface unevenness of less than 0.6 mm is required. Greater unevenness needs to be leveled with sealant, for example AFM-30 (from Reinz).
Angle of inclination of the contact surface
The load cell's sensitivity is reduced by 1-cosα. This deviation is compensated for via the weighing electronics during calibration of the weighing system. However, an angle of inclination of 3° must not be exceeded.
Plane parallelism
If base and top plate are not parallel to each other, this deviation of the force application parts from plane parallelism results in additional lateral force. This lateral force is absorbed in the longitudinal direction by the stay rod. In the transverse direction the pendulum support is deflected to such an extent that the equilibrium of forces is restored. However, to reduce the effect of lateral forces to a minimum, the angle of inclination must not under any circumstances exceed 3°.
Axial offset
An axial offset between cover plate and force application to the structure is acceptable since the plates are screwed together.