What are the classifications of transducer?

There are some classifications of transducer which is given below,

• Primary transducer: The primary transducer is also known as detector or sensor. It senses a physical parameter such as pressure, humidity, temperature etc and converts it into suitable physical parameter which is readable.
• Secondary transducer: The secondary transducer converts the output of primary transducer into electrical signal.
• Analog transducer: The analog transducer converts the input signal into an analog output which is continuous function of time.
• Digital transducer: The digital transducer converts the input signal into an electrical output which is in the form of pulses.
• Electrical transducer: The electrical transducers are that transducer which sense the physical parameter and converts it into the electrical signal
• Mechanical transducer: The mechanical transducers are that transducer which converts the one form of physical quantity into another form of physical quantity.
• Active transducer: The active transducers are also called as self generating transducer. It is that type of transducer which does not require any external (auxiliary) power supply to produce output.
• Passive transducer: The passive transducer is also known as externally powered transducer. It is that type of transducer which requires an auxiliary power supply to produce output.