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Chapter: Measurements and Instrumentation - Introduction

Measurements and Instrumentation

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.

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.

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