| 摘要 |
PURPOSE:To obtain an exact measured value, by deriving the energy of an irradiation radiant ray, obtaining a sensitivity ratio by this energy, and compensating an output of a semiconductor radiant ray detector by this sensitivity ratio. CONSTITUTION:This meter is provided with semiconductor radiant ray detectors 21-23 on which a filter 41 has been provided, and semiconductor radiant ray detectors 11-13 on which no filter is provided. A ratio of outputs of both these detectors is calculated by a ratio calculating circuit, and an energy calculating circuit 52 for calculating the energy of an irradiation radiant ray from said ratio, and a sensitivity ratio calculating circuit 53 for deriving the sensitivity ratio from said energy are provided on this meter, so that outputs of the semiconductor radiant ray detectors 11-13 and 21-23 are compensated by the sensitivity ratio which has been derived. |
