| 摘要 |
PURPOSE:To enable to display the percentage of moisture content by the same scale irrespective of the kind of grain, by varying the magnitude of resistance value of resistor connecting with the output side of moisture meter. CONSTITUTION:The resistance type moisture meter G is composed of the electrode P putting between the sample of grain, variable resistance VR for minute adjustment and amplifier A or the like. The resistors R1-R5 having a successively small value of resistance are connected with the output side of the amplifier 5 through the switch S. The indicator D or analogue type pointer is connected with the trailing stage of these resistors through the A-D converter T. Since said resistors R1-R5 show the value of resistance according to the grain, the value of resistance according to the grain is selected by switch S and the degree of moisture is indicated on the indicator D. The value of the degree of moisture is displayed as the same value irrespective of the kind of the grain when the degree of moisture is the same. |
