发明名称 |
Method and apparatus for determining the moisture content of different kinds of materials |
摘要 |
A method and apparatus for determining the moisture content of different kinds of materials wherein electrodes having a voltage supplied thereto are applied to the material to be tested for providing a measuring current corresponding to the moisture content of the material. The measuring current is applied to an amplifier having a low-valued input resistance and the moisture content is determined by adjusting a scale graduated in moisture values in accordance with the output of the amplifier. A balancing device is provided for balancing the output of the amplifier and the scale is connected to the balancing device to indicate a balance position as the moisture content value. The amplifier is also provided with a device for converting the measuring current to a voltage corresponding to the logarithm of change in current and a device for providing temperature compensation.
|
申请公布号 |
US4019132(A) |
申请公布日期 |
1977.04.19 |
申请号 |
US19750579950 |
申请日期 |
1975.05.22 |
申请人 |
ZELLWEGER, LTD. |
发明人 |
LOCH, ERNST |
分类号 |
G01N27/04;(IPC1-7):G01R27/02 |
主分类号 |
G01N27/04 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|