Ionization-type smoke detectors

1 January 1976

journal article
research article
Published by AIP Publishing in Review of Scientific Instruments

Vol. 47 (1) , 74-80
https://doi.org/10.1063/1.1134496

Abstract

A simple model is developed to determine quantitative relations among operating parameters applicable to the design of ionization‐type smoke detectors. The model permits the adjustable parameters of operating current, radioisotope source intensity, and cell geometry to be specified for ambient pressure response and optimum sensitivity to smoke particulates. Specific ionization has been measured for two sources (³H and ⁶³Ni) as a function of pressure as required by the model. Experimental agreement with the model presented shows its validity for design evaluation of ionization cells for smoke detection and possibly other special applications with particulates.

Keywords

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