| 摘要 |
A computer senses a voltage which is representative of wall thickness and defines with the use of a voltage/thickness curve the thickness of that wall portion. To define this curve, a plurality of voltage/thickness points are inputted by a sensor into the computer Each point is defined by sensing and defining the voltage of a wall portion on a calibration standard having a known thickness and defining a calibration thickness corresponding to that voltage using the following equation (((Calibration Standard Diameter in inches -Container Diameter in inches)*0.2)+1)*Calibration Standard Thickness in mils, and equating these calibration thicknesses to the corresponding voltages produced by the sensor when sensing at least two thicknesses of the standard.
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