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Section: ArticlesTitle: The Measurement of ventilation parameters by means of tracer gas techniques and a microcomputer / R. Niemelä, E. Toppila and A. TossavainenAuthor: Niemelä, R.Notes: Sumario: A tracer method was developed for the evaluation of workplace ventilation. Nitrous oxide or freon was used of the tracer. The concentration of the tracer gas was measured with an infra-red analyser. The versatility of the tracer technique for industrial hygiene applications was improved by the use of a microcomputer for data calculation, display and storage. Three applications are presented: determination of the capture efficiency of a local exhaust hood; the evaluation of the air leakage of a room; and measurement of the local ventilation rates in a la large industrial plantRelated records: En: The Annals of occupational hygiene. - Oxford [etc.]. - nº 2, 1984 ; p. 203-210Materia / lugar / evento: Higiene industrialContaminación atmosféricaControl de la contaminaciónVentilaciónAireMétodos de análisisSistemas informáticosOrdenadoresOtros autores: Toppila, E. Tossavainen, A. Secondary titles: Título: The Annals of occupational hygiene Other categories: 872Rights: In Copyright (InC)