Ionization dual-zone static detector having single radioactive s

Details Ionization dual-zone static detector having single radioactive s Ionization dual-zone static detector having single radioactive s

1975-01-28

1977-08-23

Smith, Alfred E.

Radiant energy

Invisible radiant energy responsive electric signalling

Including a radiant energy responsive gas discharge device

250385, G01T 118

Patent

active

040442632

ABSTRACT:
This ionization detector or combustion product detector includes a single radioactive source located in an ionization chamber, and the ionization chamber includes portions comprising a reference zone and a signal zone. Electrical circuitry connected to the reference and signal zones provides an output signal directly related to changes in voltages across the signal zone in relation to the amount of particulates of combustion present in the ionization chamber.

REFERENCES:
patent: 2968730 (1961-01-01), Morris et al.
patent: 3560737 (1971-02-01), Skildum
patent: 3681603 (1972-08-01), Scheidweiler et al.
patent: 3731093 (1973-05-01), Scheidweiler et al.

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