i know deferential is showing the difference, but in this case isn't it about coil movement?You could look up the word differential.
Think. Sensitivity would be measured in what units?
Long time ago we used these in very sensitive weight scales used for weighing animal organs after the animal was subject to different drugs. In that application the LVDT was forced to stay centered via a strong coil with a controlled current going through it. The level of current it takes to keep it centered when a weight is placed on the scale platform determined the force needed and therefore the weight of the object.
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