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Calibration of portable respiratory gas meters.

Authors
Carlson-WS; Henschel-AF
Source
Cincinnati, OH: U.S. Department of Health, Education, and Welfare, Public Health Service, National Center for Urban and Industrial Health, Occupational Health Progam, RR-8, 1968 Feb; :1-9
Link
NIOSHTIC No.
00047936
Abstract
Direct calibration of portable respiratory gas meters (based on expired gases) is possible by placing the meter in a box in series with an instrument of known accuracy. The Muller-Franz meter calibrated in this study had an indicated spread of acceptability of about 35 liter per minute in the range of 25-60 liter per minute. Outside of this range, because of inertia below and resistance above, the meter was grossly in error. The desirability of direct calibration is evident from the fact that the flow rate of a single breath, in liters per minute, exceeds the observed minute volume.
Keywords
NIOSH-Author; Respiratory-gas-analysis; Respiratory-function-tests; Test-methods; Measurement
Publication Date
19680201
Document Type
Other
Fiscal Year
1968
NTIS Accession No.
NTIS Price
Identifying No.
RR-8
NIOSH Division
OHP
Source Name
Occupational Health Progam
State
OH
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