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Block diagram of generalized measurement system:
Components of Generalized Measurement System:
A generalized measurement system consists of the following components:
- Primary Sensing Element
- Variable Conversion Element
- Variable Manipulation Element
- Data Processing Element
- Data Transmission System
Data Presentation Element
Primary Sensing Element:
The primary sensing element receives signal of the physical quantity to be measured as input. It converts the signal to a suitable form (electrical, mechanical or other form),
- Variable Conversion Element:
Variable conversion element converts the output of the primary sensing element to a more suitable form. It is used only if necessary.
- Variable Manipulation Element:
Variable manipulation element manipulates and amplifies the output of the variable conversion element. It also removes noise in the signal.
- Data Processing Element:
Data processing element is an important element used in many measurement systems. It processes the data signal received from the variable manipulation element and produces suitable output.
- Data Transmission System:
Data Transmission System is simply used for transmitting data from one element to another.
- Data Presentation Element:
It is used to present the measured physical quantity in a human readable form to the observer. It receives processed signal from data processing element and presents the data in a human readable form. LED displays are most commonly used as data presentation elements in many measurement systems.