Following points must be kept in mind while selecting a proper load cell:
It is crucial to decide whether one wants a tension or a compression load cell. A tension load cell measures the amount of weight pulling it, whereas a compression load cell measures the weight by pushing against it. A compression load cell is generally placed beneath the object that needs to be weighed. Keeping all this in mind, one can easily choose an appropriate load cell.
The number of cells should be decided based upon the number of supports used. In ideal situations, each support should have a load cell and this is more essential if the weight is not equally distributed between the supports.