The Measurement of ventilation parameters by means of tracer gas techniques and a microcomputer

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      <subfield code="a">Niemelä, R.</subfield>
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      <subfield code="a">The Measurement of ventilation parameters by means of tracer gas techniques and a microcomputer</subfield>
      <subfield code="c">R. Niemelä, E. Toppila and A. Tossavainen</subfield>
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      <subfield code="a">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 plant</subfield>
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      <subfield code="a">Contaminación atmosférica</subfield>
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      <subfield code="a">The Annals of occupational hygiene</subfield>
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      <subfield code="t">The Annals of occupational hygiene</subfield>
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      <subfield code="g">nº 2, 1984 ; p. 203-210</subfield>
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