Effects of Off Axis Loading

Off axis load carrying capacity is the ability of the sensor to take side and bending loads. As can be seen from fig 5 the column style is the most susceptible to side load and the stabilized diaphragm the least susceptible. The single diaphragm unit is better than the column but not nearly as good as the stabilized diaphragm unit.

Off axis load carrying capacity is important for two reasons: first, the ability to handle high loads without breaking and secondly, the ability to reject extraneous load information in the output of the sensor. For example the, with the same side side loads, the single diaphragm unit will have approximately 10 times more error than the stabilized unit. Side load sensitivity can be reduced by increasing the diameters (twice the diameter is about twice as strong). However increasing the physical size is not always an option.

Fig 6 Approximate relative side loading immunity