Main element of an analytical instrument are as below :

• Chemical Information Source.

• Transducer.

• Signal Conditioner.

• Display.

• Chemical Information Source:

        An information source from where one can get information. Information source is means of disseminating recorded information. Information source represents results.

        Chemistry is the "science concerned with the substances of which matter is composed, the investigation of their properties and reactions."

• Transducer:

        The device which converts the one form of energy into another is known as the transducer. The process of conversion is known as transduction. The conversion is done by sensing and transducing the physical quantities like temperature, pressure, sound, etc. 

• Signal Conditioner:

        Signal conditioning is a process of data acquisition, and an instrument called a signal conditioner is used to perform this process. This instrument converts one type of electrical or mechanical signal (input-signal) into another (output-signal).  The purpose is to amplify and convert this signal into an easy to read and compatible form for data-acquisition or machine-control.

       A signal conditioner helps to provide precise measurements, which are essential for accurate data acquisition and machine-control. These instruments can perform an additional number of different functions.