Ionization detector chamber

Details Ionization detector chamber Ionization detector chamber

1979-07-18

1982-05-04

Smith, Alfred E.

Radiant energy

Invisible radiant energy responsive electric signalling

Including a radiant energy responsive gas discharge device

250385, G01T 118

Patent

active

043284248

ABSTRACT:
This invention is a smoke detector for giving a warning that a fire is imminent. The detector has an ionization chamber with a central electrode which is covered by insulation except at a restricted area closely spaced from a measuring electrode, a second electrode being constituted by a perforated wall of the ionization chamber. The detector is very sensitive to the presence of smoke, because of the concentration of the electric field in the area between the measuring electrode and the exposed part of the first electrode.

REFERENCES:
patent: 4044263 (1977-08-01), Ried, Jr. et al.

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