Ionization type-smoke detector

Details Ionization type-smoke detector Ionization type-smoke detector

G - Physics

01

T

358/21

G01T 1/18 (2006.01) G08B 17/113 (2006.01)

Patent

CA 1267735

ABSTRACT OF THE DISCLOSURE An ionization-type smoke detector having inner and outer ionization chambers, a radioactive source to ionize the air within the inner and outer ionization chambers and a printed board to mount electrical circuits for detecting electrical potential at the connecting portion between both chambers is made to be relatively thin by arranging the inner, intermediate and outer electrodes so that they are respectively vertically mounted to the printed board while being transversally spaced apart from each other.

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