Following points must be kept in mind while selecting a proper load cell:
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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.
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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.