Communications: electrical – Condition responsive indicating system
Patent
1978-08-10
1980-10-21
Caldwell, Sr., John W.
Communications: electrical
Condition responsive indicating system
340511, 340530, 340573, 340578, 340600, 250372, 250388, G08B 2300, G08B 1712, G01J 142
Patent
active
042297338
ABSTRACT:
An exposure detecting device comprising a radiation detector means providing an output signal responsive to the intensity of received ultraviolet radiation, a storage means receiving the output signal of said detector means and providing an output signal which increases as a function of the signal received and its duration, and decreases in the absence of a received signal as a predetermined function of time. A sensitivity control means provides a reference signal, and comparing means receives the output signal of said storage means and the reference signal of said sensitivity control means and delivers an output signal when the storage means output signal exceeds a predetermined value with respect to the reference signal. Alarm means is activated upon receiving an output signal from said comparing means providing an alarm.
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Di Camillo Carmen A.
Tulenko Thomas N.
Caldwell Sr. John W.
Crosland Donnie L.
Trachtman Jacob
Tulenko Thomas N.
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