Re: Sensor Sentivity

Discussion in 'General Electronics Chat' started by Michael Lin, Aug 26, 2006.

  1. Michael Lin

    Thread Starter Member

    Sep 20, 2005
    Hi All,
    If my force sensor operates in the range of 0 - 500g and has a sensitiviy of 0.1mV/gram (or 0.2mV/V/gram), how can I interpret this senstivitiy as mv/Newton? What does this sensitivity value mean to me exactly?

  2. beenthere

    Retired Moderator

    Apr 20, 2004

    It's kind of an apple and orange situation. Grams are a measure of mass; Newtons are a measure of force. Obviously, a mass of X grams will exert a force of Y newtons on a sensor under the acceleration of gravity.

    My physics book gives a Newton as equal to .2248 pounds. I'm not sure of the equivalence of grams to pounds.

    The stated sensitivity I can make sense of is the latter. If the sensor has 10 volts excitation applied, and one gram placed on it, then the electrical output will be 2 millivolts.

    What it means to you exactly is something for you to determine.