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Chapter: Measurements and Instrumentation : Transducers and Data Acquisition Systems

Advantages and Disadvantages of Electrical Transducers

Electrical signal obtained from electrical transducer can be easily processed (mainly amplified) and brought to a level suitable for output device which may be an indicator or recorder.

Advantages of Electrical Transducers

 

1.       Electrical signal obtained from electrical transducer can be easily processed (mainly amplified) and brought to a level suitable for output device which may be an indicator or recorder.

 

2.       The electrical systems can be controlled with a very small level of power

 

3.       The electrical output can be easily used, transmitted, and processed for the purpose of measurement.

 

4.       With the advent of IC technology, the electronic systems have become extremely small in size, requiring small space for their operation.

 

5.       No moving mechanical parts are involved in the electrical systems. Therefore there is no question of mechanical wear and tear and no possibility of mechanical failure.

 

Electrical transducer is almost a must in this modem world. Apart from the merits described above, some disadvantages do exist in electrical sensors.


Disadvantages of Electrical Transducers

 

Ø   The electrical transducer is sometimes less reliable than mechanical type because of the ageing and drift of the active components.

 

Ø Also, the sensing elements and the associated signal processing circuitry are comparatively expensive.

 

Ø With the use of better materials, improved technology and circuitry, the range of accuracy and stability have been increased for electrical transducers.

 

Ø     Using negative feedback technique, the accuracy of measurement and the stability of the system are improved, but all at the expense of increased circuit complexity, more space, and obviously, more cost.

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Measurements and Instrumentation : Transducers and Data Acquisition Systems : Advantages and Disadvantages of Electrical Transducers |


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