a) A load cell has a force range from 0-8 N, which has a corresponding voltage o

Question

a) A load cell has a force range from 0-8 N, which has a corresponding voltage output from -5 V (at O N) to 5 V(at 8 N). What is the sensitivity of this device, in V/N? :125hatisthe sensitivityofthisde vice,ingvoltage output : 1,25% S-AY b) The same load cell has a linearity error of 0.3% of the full scale output, and a zero (null) error of 0.5% of the full scale output. The resolution of the load cell is 0.05 N. All values are given at 95% probability. what is the design-stage uncertainty, in volts?

Explanation / Answer

(a) S = deltaV/deltaN = (5-(-5)) / 8 =1.25 V/N.........Ans.

(b) design stage uncertainty = 0.3*0.5*10 =1.5 V...........Ans.

(c) 0.68*20/5 =2.72 N

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