Answer to Question #329623 in Mechanical Engineering for Hrithik

Question

Question 2

A load cell calibrated at a temperature of 200𝐶 has the following output/input characteristic.

Load in kN 0 0.4 0.8 0.12 0.16 0.20

Deflection of meter in mm 0 10 20 30 40 50

When it is used in an environment of 400

its characteristics change to the following;Load in kN 0 0.4 0.8 0.12 0.16 0.20

Deflection of meter in mm 3 14 25 36 47 58

(a) Determine;

(i) Zero drift

(ii) Sensitivity drift, and

(iii) Sensitivity drift per 0C change in ambient temperature

(b) If 0.5 mm of scale division can be read with a fair degree of certainty, hence

determine the resolution of the instrument in both cases i.e. at 200𝐶 and 200𝐶.

Answer 1

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