Distinguish carefully between the following terms: i) Resolution and Sensitivity. ii) Type A and Type B evaluations
Question:
Distinguish carefully between the following terms: i) Resolution and Sensitivity. ii) Type A and Type B evaluations of measurement uncertainty. [30%]
(b) Describe two common schemes used for the classification of sensors. [30%]
(c) The standard form of the transfer function of a first-order measuring device is: () = 1/ (T + 1) Describe what s and T represent in the above transfer function. Derive the time domain step response (when the input is a step function). Sketch the typical types of step response which may be obtained. Comment on the effects of such a response on the measurement.
Phase sensitive demodulation (PSD) (or lock-in detection) is widely used to determine both amplitude and direction of LVDT displacement. Explain how the PSD works.
Expert Answer:
a Distinction between Resolution and Sensitivity i Resolution Resolution refers to the smallest change in the input quantity that can be detected or measured by the instrument It is the smallest incre... View the full answer
