Method and apparatus for signalling concentration of air conveye

Details Method and apparatus for signalling concentration of air conveye Method and apparatus for signalling concentration of air conveye

1975-08-04

1978-05-23

Camby, John J.

Drying and gas or vapor contact with solids

Apparatus

With means to treat gas or vapor

34 43, 34 79, 34 89, 55 18, 55212, 324 33, 324 71R, F26B 304

Patent

active

040903087

ABSTRACT:
A method and apparatus by which the degree of concentration of ionizable foreign matter conveyed by an entraining air flow is detected and signalled and in which at least a portion of an air flow and matter conveyed thereby is passed through an ionization detector spark gap while a continuous arcing electrical discharge is maintained across the gap. The electrical conductivity of the discharge is monitored, so that fluctuations in the concentration of conveyed matter are indicated by fluctuations in the monitored discharge conductivity.

REFERENCES:
patent: 3693009 (1972-09-01), Sasaki
patent: 3781838 (1973-12-01), Primmer
patent: 3805259 (1974-04-01), Inoue
patent: 3886854 (1975-06-01), Culpepper, Jr.
patent: 3932137 (1976-01-01), Culpepper, Jr.
patent: 3942264 (1976-03-01), Zenker
patent: 3949390 (1976-04-01), Rayl et al.

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