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Gas Generation Systems for the Evaluation of Gas Detecting Devices.

PB82196205

Publication Date	1973
Personal Author	Hughes, E. E.; Dorko, W. D.; Scheide, E. P.; Hall, L. C.; Beilby, A. L.
Page Count	113
Abstract	This report summarizes work concerned with the development of gas generation systems for use in verifying the performance of gas detection devices or for the calibration of gas analysis instrumentation. The systems were designed to provide mixtures of a number of different gases and vapors in air at concentrations representing fixed proportions of the threshold limit value. Furthermore, they furnish a sufficient volume of gas to allow continuous testing of devices while maintaining a predetermined concentration level. The substances for which gas generation systems were developed are: carbon dioxide, carbon monoxide, ozone, sulfur dioxide, hydrogen sulfide, nitrogen dioxide, benzene, carbon tetrachloride, trichloroethylene, ammonia, and chlorine. The systems are of 4 basic types: direct delivery from cylinders of known concentration. Dynamic blending of high concentrations with air, permeation tubes, and generation of the substance directly in an air stream. Monitoring systems are suggested to allow confirmation of the quantities generated. Details of construction are given.
Keywords	Gas detectors Aerosol generators Air pollution Performance evaluation Laboratory equipment Design criteria Carbon monoxide Carbon dioxide Ozone Carbon tetrachloride Sulfur dioxide Hydrogen sulfide Nitrogen dioxide Benzene Ammonia Chlorine Air pollution detection Ethylene/trichloro Ethylene/tetrachloro
Source Agency	National Institute of Standards and Technology National Institute for Occupational Safety and Health
NTIS Subject Category	68A - Air Pollution & Control 99A - Analytical Chemistry
Corporate Authors	National Bureau of Standards, Washington, DC.; National Inst. for Occupational Safety and Health, Cincinnati, OH.
Supplemental Notes	Sponsored in part by National Inst. for Occupational Safety and Health, Cincinnati, OH.
Document Type	Technical Report
Title Note	Final rept.
NTIS Issue Number	198216

Gas Generation Systems for the Evaluation of Gas Detecting Devices.

Gas Generation Systems for the Evaluation of Gas Detecting Devices.
PB82196205

Publication Date	1973
Personal Author	Hughes, E. E.; Dorko, W. D.; Scheide, E. P.; Hall, L. C.; Beilby, A. L.
Page Count	113
Abstract	This report summarizes work concerned with the development of gas generation systems for use in verifying the performance of gas detection devices or for the calibration of gas analysis instrumentation. The systems were designed to provide mixtures of a number of different gases and vapors in air at concentrations representing fixed proportions of the threshold limit value. Furthermore, they furnish a sufficient volume of gas to allow continuous testing of devices while maintaining a predetermined concentration level. The substances for which gas generation systems were developed are: carbon dioxide, carbon monoxide, ozone, sulfur dioxide, hydrogen sulfide, nitrogen dioxide, benzene, carbon tetrachloride, trichloroethylene, ammonia, and chlorine. The systems are of 4 basic types: direct delivery from cylinders of known concentration. Dynamic blending of high concentrations with air, permeation tubes, and generation of the substance directly in an air stream. Monitoring systems are suggested to allow confirmation of the quantities generated. Details of construction are given.
Keywords	Gas detectors Aerosol generators Air pollution Performance evaluation Laboratory equipment Design criteria Carbon monoxide Carbon dioxide Ozone Carbon tetrachloride Sulfur dioxide Hydrogen sulfide Nitrogen dioxide Benzene Ammonia Chlorine Air pollution detection Ethylene/trichloro Ethylene/tetrachloro
Source Agency	National Institute of Standards and Technology National Institute for Occupational Safety and Health
NTIS Subject Category	68A - Air Pollution & Control 99A - Analytical Chemistry
Corporate Authors	National Bureau of Standards, Washington, DC.; National Inst. for Occupational Safety and Health, Cincinnati, OH.
Supplemental Notes	Sponsored in part by National Inst. for Occupational Safety and Health, Cincinnati, OH.
Document Type	Technical Report
Title Note	Final rept.
NTIS Issue Number	198216