Detecting system and detector

Communications: electrical – Condition responsive indicating system – With particular system function

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Details

340511, 340630, 340588, G08B 2300, G08B 1710

Patent

active

047852836

ABSTRACT:
A detecting system and a detector which includes an analog sensor for sensing a change in a quantity of an environmental phenomenon, processes a signal corresponding to a detection level output from said analog sensor to detect a change in the environmental phenomenon, in which the detecting sensitivity of analog sensor may be changed between a plurality of sensitivity levels according to the quantity of the phenomenon.

REFERENCES:
patent: 4388616 (1983-06-01), Machida
patent: 4390869 (1983-06-01), Christen et al.
patent: 4546344 (1985-10-01), Guscott et al.
patent: 4556873 (1985-12-01), Yamada et al.

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