In-line moisture-content measurement of ceramic materials in...

Details In-line moisture-content measurement of ceramic materials in... In-line moisture-content measurement of ceramic materials in...

2009-05-26

2011-11-15

Thompson, Jewel V (Department: 2855)

Measuring and testing

Moisture content or absorption characteristic of material

C324S634000, C324S601000

Reexamination Certificate

active

08056401

ABSTRACT:
In-line systems for and methods of measuring the moisture content of ceramic material within an extrusion system used to form ceramic articles are disclosed. One method includes arranging, relative to the extrusion system, at least one radio-frequency (RF) sensor system having an RF antenna, and generating through the RF antenna an RF field that resides substantially entirely within the ceramic material. The method also includes, in response to the RF field interacting with the ceramic material, generating in the RF sensor system a signal representative of a raw moisture-content measurement of the ceramic material. The method also includes generating calibration data by performing RF moisture-content measurements on samples of the ceramic material having different known moisture contents, and establishing a calibrated moisture-content measurement using the raw moisture-content signal and the calibration data. Both contact and non-contact systems and measurement methods are described.

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