Question

Followings are the specifications of a laser displacement sensor:
(a) Measurement range: +10 mm
(b) Measurement centre point: 50 mm
(c) Resolution: 1.5 μ m
(d) Linearity: +0.05 % FS
(e) Response time: 60 μs
(f) Linear output: 4-20 mA
Answer the following questions based on Specs given above.
(i) Draw input output graph for the sensor and properly label it.
(ii) Evaluate the sensitivity of the sensor in mA/mm.
(iii) An object is at a distance of 57 mm from the sensor. Determine the output
of the sensor in mA?
(iv) What is the error in the output of the sensor for the case above [part(iii)]?

Answer 1