Measurement device and measurement method

A measurement method using a measurement device comprising an electric field generator configured to generate an alternating current electric field, an electric field detector disposed to face the electric field generator at a distance from the electric field generator and configured to detect the alternating current electric field generated by the electric field generator, a thickness gauge configured to measure a thickness of a measurement target in a non-contact manner, and a processor configured to derive a calibration curve representing a relationship between a specific dielectric constant and an intensity of an alternating current electric field, wherein the measurement target is insertable between the electric field generator and the electric field detector, the measurement method comprising:

• deriving, by the processor, the calibration curve for each thickness of a plurality of measurement targets whose specific dielectric constants are known, the calibration curve representing a relationship between the specific dielectric constant of each of the plurality of measurement targets whose specific dielectric constants are known and the intensity of the alternating current electric field;
• detecting, by the electric field detector, an intensity of the alternating current electric field attenuated by the measurement target whose specific dielectric constant is unknown;
• measuring, by the thickness gauge, the thickness of the measurement target whose specific dielectric constant is unknown;
• and
• calculating, by the processor, a specific dielectric constant of the measurement target whose specific dielectric constant is unknown on the basis of the detected intensity of the alternating current electric field, the measured thickness, and the derived calibration curve.