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Gas Generation Systems for the Evaluation of Gas Detecting Devices.

Authors
Hughes-EE; Dorko-WD; Scheide-EP; Hall-LC; Beilby-AL; Taylor-JK
Source
NIOSH 1973 Oct:111 pages
Link
NIOSHTIC No.
00040967
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, tetrachloroethylene, 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
Instruments; TLV's; Apparatus; Methodology; Chlorinated-ethylenes;
CAS No.
124-38-9; 630-08-0; 10028-15-6; 7446-09-5; 7783-06-4; 10102-44-0; 71-43-2; 56-23-5; 79-01-6; 127-18-4; 7664-41-7; 7782-50-5;
Publication Date
19731001
Fiscal Year
1974
NTIS Accession No.
PB82-196205
NTIS Price
A07
Identifying No.
NBSIR 73-292
NIOSH Division
DLCD;
Source Name
Division of Laboratories and Criteria Development, National Institute for Occupational Safety and Health, Cincinnati, Ohio, Final Report, Report No. NBSIR 73-292, 111 pages
State
OH;
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