| 摘要 |
<p>PURPOSE:To decide radioactivity contamination in a short time by making an advance to a next decision step when a set stepwise alarm level is exceeded and deciding that the contamination is below an alarm level when not. CONSTITUTION:A radiation monitor circuit is equipped with a detector 10 which measures the radioactivity of a body at respective parts and a timer 12 which outputs a signal at prescribed intervals of time. Further, a decision level setter 14 which sets the alarm level and stepwise alarm level for deciding the radioactivity contamination and a comparator 16 which compares the outputs of the detector 10 and setter 14 with each other are provided, and the output of the comparator 16 is supplied to a display device 18. This constitution divides a conventional measurement time into respective stages and a final alarm level is decided with stepwise alarm levels set in respective decision steps. Consequently, the decision is finished early from persons who are less contaminated, and the radioactivity contamination is measured speedily.</p> |
