4.1 Introduction We hope to acquire measurands with no errors If the characteristic curve is a straight line the transducer is known as a linear transducer But in most cases the characteristic of a transducer is not a linear one and the transducer is called a nonlinear transducer• We hope to acquire measurands with no errors. • If the characteristic curve is a straight line, the transducer is known as a linear transducer. • But in most cases, the characteristic of a transducer is not a linear one, and the transducer is called a nonlinear transducer. 4.1 Introduction