I'm going to experiment with a parallel beam load cell like this one: https://cdn.sparkfun.com/datasheets/Sensors/ForceFlex/TAL220M4M5Update.pdf. I've read somewhere that for a setup shown on this picture:
the response of the cell is largely independent of the place the force is applied to the top plate, e.g. a mass placed in the spot indicated by red or green arrow, they will produce the same load sensor response. Is that accurate?
In my use case, the force will be applied where the green arrow points. I want to make sure that I'm not exceeding the safe overload for my sensor.
The gist of my question is whether the sensor response will be proportional to force times distance from the center of the cell (moment of force) or there is some other formula.
Here is the drawing showing compression and tension directly measured by bending beam load cell:
BTW, I'm not interested in highly accurate measurement, just an approximate detection of an object with a mass above a certain threshold.