1 - A computerized method for calibrating a transducer from a first target object material previously used to calibrate the transducer to a second different target object material, the steps including: providing previously established transducer parameters for a transducer monitoring a first target object material to a computer; generating an output signal from the transducer located adjacent a second different target object material and operatively communicating the generated output signal to the computer; transforming, by processing with the computer, both the previously established transducer parameters for the transducer monitoring the first target object material and the generated transducer parameters for the transducer monitoring a second different target object material into a calibration parameter; and linearizing subsequent output signals of the transducer into gap values as a function of the calculated calibration parameter and correlative to a distance between the transducer and the second different target object material being monitored by the transducer for commuting the output of the transducer and thus, the use of the transducer, from the first target object material used to calibrate the transducer to the second different target object material being subsequently monitored by the transducer.