|Document ID (ISN)||42907|
|Convention or series no.
||Arbete och hälsa 1983:3
||Measurement of air turnover rates - A comparison of different instruments and gases
||Luftomsättningsmätning - En jämförelse mellan olika instrument och gaser [in Swedish]|
||Arbetarskyddsstyrelsen, Publikationsservice, 171 84 Solna, Sweden, 1983. 38p. Illus. 34 ref.
||A comparison between instruments used for measurements of air change rates with the tracer gases nitrous oxide (N2O) and sulfur hexafluoride (SF6). Air change rates were 2.5-20 per hour and the concentrations of the tracer gases were 700ppm-3ppm for N2O and 2200ppb-2ppb for SF6. Both gases can be used for measurements in workrooms with the given air change rates. Continuous measurements of either gas can be done with infrared spectrometers in the intervals 10ppm-1000ppm and 10ppb-1000ppb, respectively. Lower concentrations of SF6 can be measured using a gas chromatograph with an electron capture detector, but continuous measurements are not possible. Leak detectors, which in principle are simplified gas chromatographs, are not usable for quantitative measurements.
||infrared spectrophotometry; nitrous oxide; sulfur hexafluoride; gas chromatography; air exchange rate
||evaluation of equipment
||E - Books, reports, proceedings
||Heating, ventilation and climate
|Broad subject area(s)
Halogens and their inorganic compounds