Evaluation of a Crushing-Roller Conductance Instrument for Single-Kernel Corn Moisture Measurement
ABSTRACT An instrument that sensed de electrical resistance of corn kernels as they passed between crushing rollers was evaluated for use in measuring the moisture content of single kernels. After calibration with a set of 61 corn samples representing six lots from Illinois, Iowa and Nebraska and covering a moisture range from 12 to 30%, wet basis, measurements were taken on other corn samples for verification. The standard error of performance was 0.99% moisture. The instrument was judged suitable for detecting corn lots of mixed moisture content when moisture contents of the blended lots differ by 2% or more.