QUESTION $2$

Process control necessitates measuring key process parameters to guarantee that they remain at the correct values. A non$-$measurable process parameter cannot be regulated or controlled. Instruments are the foundation of control systems; they measure the controlled process variable and convert the measurements into a signal, which is then sent to the controller device. List and briefly discuss the factors that should be taken into consideration when selecting an instrument.

$[10$ Marks$]$b