| 摘要 |
A tobacco content control device for cigarette machine, including a radiometric density detector for irradiating tobacco being transferred along a predetermined path on a cigarette machine with a radiant ray and converting the intensity of radiation transmitted through the tobacco into an electric signal, controlling tobacco contents to a predetermined value according to the output signal of the radiometric density detector, characterized in that the control device comprises: voltage generating means for producing two voltage signals indicative of upper and lower limits of a predetermined range; comparison means adapted to compare the output signal of the radiometric density detector with the voltage signals and to produce an output signal when the predetermined range is outrun; and means for informating abnormality of the radiometric density detector upon receipt of the output signal of the comparison means.
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