RESISTANCE TYPE PORTABLE COTTON LINT MOISTURE METER英文电子书.pdf

RESISTANCE-TYPE PORTABLE COTTON LINT MOISTURE METER R. K. Byler ABSTRACT. Knowledge and proper control of moisture in cotton lint is crucial to optimal operation of cotton gins. Currently available portable meters have a standard error of 0.5 to 1.0 percentage point, which is not as accurate as desired. A battery powered, portable, resistance-based cotton lint moisture meter was designed an d two units constructed using a sensing grid, which has been used in non-portable applications in gins. The entire weight of the meter, 5.8 kg (12.8 lb), consistently presse d the electrodes against the sample. The meters used a toggle switch for commands from the operator and displayed results on a liquid crystal display. The meter readings of well conditioned lint compared to the oven-based moisture content were used in calibration. A separate data set was used to verify the calibration and the standard error was found to be 0.26 percentage point for both units over the 4.3% to 10.2% range. Keywords. Cotton, Lint, Moisture content, Measurement, Resistance. he quality of lint produced by a gin is dependent on systems. Resistance-based meters are used in the USDA the initial quality of the seed cotton and on the type Agricultural Marketing Service, Cotton Division (AMS) Tand degree of drying and cleaning performed at the classing offices to spot check that the samples are in the gin. Both the cleaning efficiency and damage done proper range for testing. These sensors are less expensive to fibers during ginning and cleaning are controlled, in large than near-infrared meters, but their effectiveness has been