1. Nominal sensitivity in mV/V displays the ratio of output voltage to the excitation voltage for the sensor to work. Typically defined as Rate Output R.O in bridge based sensor

2.Variation in the output signal of a Wheatstone bridge sensor between the unloaded situation and full scale. This value is expressed as a function of the supply voltage. Thus, a sensor with a sensitivity of 2 mV / V with a supply voltage of 10 V will have a signal variation of 20 mV when the force goes from zero to full scale.