Measurements and Instrumentation

Measurements and Instrumentation

INTRODUCTION

MEASUREMENTS:

The measurement of a given quantity is essentially an act or the result of comparison between the quantity (whose magnitude is unknown) & a predefined standard. Since two quantities are compared, the result is expressed in numerical values.

BASIC REQUIREMENTS OF MEASUREMENT

i)         The standard used for comparison purposes must be accurately defined & should be commonly accepted

ii)      The apparatus used & the method adopted must be provable.

MEASURING INSTRUMENT:

It may be defined as a device for determining the value or magnitude of a quantity or variable.