FUNCTIONAL ELEMENTS OF AN INSTRUMENTATION SYSTEM

Question 1

What are functional elements of a system

Answer 1

There are several functional elements in a system, these are basically the elements which are responsible for carrying out a certain function or action.

Question 2

Explain the types of functional elements.

Answer 2

There are several types of functional elements, namely:

~Primary Sensing Element -> This element comes first in the contact of the physical quantity that has to be measured, it sense the quantity.

~Variable Conversion Element -> The output from the PSE might not be the of the desired format, so it changes it to the desired format.

~Variable Manipulation Element -> Here the form of the output won’t change, but the amplitude or frequency will.

~Data Transmission Element -> This element provides a mechanism for the data to transmit to different places or systems, via wired or wireless approach.

~Data Presentation Element -> This is used represent the final value in terms of numerical reading, scale and pointer or a plot.

Question 3

Explain Desired, Interfering & Modifying Inputs

Answer 3

Desired -> This is the input that we want to measure.

Interfering -> This is the type of input to which our instrument is sensitive to, this is an external disturbance. We don’t want this.

Modifying -> These are the quantities that cause a change in the relationship between the input and the output.