Abstract
Conventional moisture meters for grains need a pair of antennae for transmitting and receiving microwaves. The grains are measured while they pass a narrow gap between the antennae. The flow of grain is not always smooth, resulting in low measurement accuracy. Furthermore, the gap is often clogged. In a newly developed device, the grains are measured while they are moving on a plate which includes a built-in microwave transmission line. The grains can flow on the plate without any obstacle, thus resulting in a high accuracy of lower than plus or minus 0. 7% (with unhulled rice having 12 to 22% moisture content). The microwave circuit is made of hybrid integrated circuits, making possible simple construction compactness, high reliability and accuracy. The frequency used is 10. 5 GHz.
Original language | English |
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Pages (from-to) | 520-525 |
Number of pages | 6 |
Journal | Natl Tech Rep Matsushita Electr Ind |
Volume | 24 |
Issue number | 3 |
Publication status | Published - 1978 |
Externally published | Yes |
ASJC Scopus subject areas
- Engineering(all)