CONTINIOUS SIGHTING METHOD AND APPARATUS FOR VAPOR CONSTITUENTS

Title:

CONTINIOUS SIGHTING METHOD AND APPARATUS FOR VAPOR CONSTITUENTS

Document Type and Number:

Japanese Patent JPS5255590

Kind Code:

A

Abstract:

The method described is appliable to the continuous monitoring of a specific vapour, having a given electron capture coefficient, in a sample of air. A semi-permeable membrane is used to separate the vapour from the air. The vapour is then mixed with a carrier gas, either argon or helium, and it is passed into an electron capture detector and a universal detector. The electrical signals produced by these detectors are amplified separately and compared with threshhold levels. In this way binary signals are produced with arc applied to a logic circuit. The universal detector may be an argon ion detector, a helium ion detector, a hyper-frequency plasma emission detector, thermal conductivity detector, a photoionisation detector, etc..

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Inventors:

REN SHII SHIYOWARUTAA
JIYON ERU BUROTSUKENSHIYAIYAA
JIOFUREI BII WATSUTO
JIYON DEI DOURU

Application Number:

JP11379376A

Publication Date:

May 07, 1977

Filing Date:

September 24, 1976

Export Citation:

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Assignee:

MARSLAND ENGINEERING LTD

International Classes:

G01N27/64; G01N27/66; G01N33/00; G01N27/04; (IPC1-7): G01N21/00; G01N23/00; G01N25/00; G01N27/00

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