Measuring and testing – Moisture content or absorption characteristic of material – By desiccation or extraction
Patent
1997-12-29
1999-11-16
Fuller, Benjamin R.
Measuring and testing
Moisture content or absorption characteristic of material
By desiccation or extraction
374 14, G01N 502, G01N 2500
Patent
active
059837110
ABSTRACT:
A temperature controlled gravimetric moisture analyzer (20) is used to control the temperature of a sample material (24) while determining moisture content of the sample material (24). The moisture analyzer (20) includes a thermally conductive sample holder (22) having an emissive surface (44). A high precision force balance (30) is coupled to the sample holder (22) for weighing the sample material (24). A heater (26) encloses the sample material. An air temperature sensor (38) is configured to produce an air temperature signal (54). An infrared temperature sensor is configured to detect infrared emissions from the emissive surface (44) to produce a sample temperature signal (60) representative of the temperature of the sample material (24). A controller receives the air and sample temperature signals (54, 60) and controls the heater (26) in response to the signals.
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Pappas William D.
Raisanen Walfred R.
Arizona Instrument Corporation
Clark Robin
Fuller Benjamin R.
Gresham Lowell W.
Meschkow Jordan M.
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