Functions of each block:
Primary sensing element:
This first receives energy from the measured medium and produces an output depending on measured quantity.
Variable conversion element:
Converts the output signal of the primary sensing element into a more suitable variable or condition useful to the Function of the instrument.
Variable manipulation element:
Manipulates the signal represented by some physical variable, to perform the intended task of an instrument. In the Manipulation process, the physical nature of the variable is preserved.
A data transmission unit: Transmits the data from one element to the other
A data presentation element:
Performs the translation function, such as the simple indication of a pointer moving a scale or the recording of a pen Moving over chart.