The effect of extreme humidity and temperature on gas detector tube performance.

Details

• Personal Author:
  Carroll HB ; Crouse, William E. ; McCammon, Charles S.
• Description:
  NIOSH investigated the effect of humidity and temperature on gas detector tubes tested at two concentrations (the current OSHA standard and 2 times the standard). Two brands of detectors used by the Bureau of Mines from four different manufacturers were tested with carbon-monoxide (630080), carbon-dioxide (124389), nitric-oxide (10102439), nitrogen-dioxide (10102440), sulfur-dioxide (7446095), hydrogen-sulfide (7783064), and formaldehyde (50000). Five replicate samples of each tube were tested. Testing temperatures varied from 40 to 120 degrees F; relative humidities were varied from 20 to 90 percent. A premeation tube system was used for accurate production of atmospheres containing the desired contaminants. Each tube was read by three different observers. An analysis of variance was used to statistically determine the magnitude of bias due to temperature or humidity. In general, humidity and temperature affected readings of both brands of gas detector tubes, and the severity of the bias observed was dependent upon the concentration of the contaminant being measured. The authors state that if the environmental conditions used in these tests had been required in the certification program, eight of the twelve certified tubes would have failed the test. [Description provided by NIOSH]
• Subjects:
  Environmental Health Environmental Monitoring Hot Temperature Humidity Occupational Health Safety
• Keywords:
  Air-sampling-equipment Analytical-instruments Chemical-agent-detectors Climatic-factors Environmental-factors Hot-environments NIOSH-Author
• ISSN:
  0002-8894
• Document Type:
  Text
• Genre:
  Journal Article
• Place as Subject:
  Ohio ; Oklahoma ; OSHA Region 5 ; OSHA Region 6
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  DSHEFS - Division of Surveillance, Hazard Evaluations, and Field Studies ; DTS - Division of Technical Services
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  18-25
• Volume:
  43
• Issue:
  1
• NIOSHTIC Number:
  nn:00120727
• Citation:
  Am Ind Hyg Assoc J 1982 Jan; 43(1):18-25
• CAS Registry Number:
  Carbon dioxide (CAS RN 124-38-9) ; Carbon monoxide (CAS RN 630-08-0) ; Formaldehyde (CAS RN 50-00-0) ; Hydrogen sulfide (CAS RN 7783-06-4) ; Nitric oxide (CAS RN 10102-43-9) ; Nitrogen dioxide (CAS RN 10102-44-0) ; Sulfur dioxide (CAS RN 7446-09-5)
• Federal Fiscal Year:
  1982
• Peer Reviewed:
  True
• Source Full Name:
  American Industrial Hygiene Association Journal
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:b6b81ae638cc758bf5b5eb21bce81471ea60e4fbd4f7650cb6f42d0cbea4c5ff9308b6a9119959abfc39107562752ec87cfc0f2bc51efd717542720749498bd3
• Download URL:
  https://stacks.cdc.gov/view/cdc/184513/cdc_184513_DS1.pdf
• File Type:
  [PDF - 727.45 KB ]