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This practice presents the procedures and equipment that will permit, within certain limits, representative sampling of stationary source emissions for the automated determination of gas concentrations of effluent gas streams. This application is limited to the determination of oxygen (O2), carbon dioxide (CO2), carbon monoxide (CO), sulfur dioxide (SO2), nitric oxide (NO), nitrogen dioxide (NO2) and total oxides of nitrogen (NOx). Although velocity measurements are required to determine the mass flow rates of gases, this is, however, not included in this practice. This practice describes representative sampling of gases in a duct, both by extractive and non-extractive methods. In extractive sampling, gases are conditioned to remove aerosols, particulate matter, and other interfering substances before being conveyed to the instruments. In non-extractive sampling, the measurements are made in-situ; therefore, no sample conditioning except filtering is required.
This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.
1.1 This practice covers procedures and equipment that will permit representative sampling for the automated determination of gas concentrations of effluent gas streams with limitations as described below. The application is limited to the determination of oxygen (O2), carbon dioxide (CO2), carbon monoxide (CO), sulfur dioxide (SO2), nitric oxide (NO), nitrogen dioxide (NO2), and total oxides of nitrogen (NOx).
1.2 Velocity measurements are required to determine the mass flow rates of gases. This is not included in this practice.
1.3 There are some combustion processes and conditions that may limit the applicability of this practice. Where such conditions exist, caution and competent technical judgment are required, especially when dealing with any of the following:
1.3.1 Corrosive or highly reactive components,
1.3.2 High vacuum, high pressure, or high temperature gas streams,
1.3.3 Wet flue gases,
1.3.4 Fluctuations in velocity, temperature, or concentration due to uncontrollable variation in the process,
1.3.5 Gas stratification due to the non-mixing of gas streams,
1.3.6 Measurements made using environmental control devices, and
1.3.7 Low levels of gas concentrations.
1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. For more specific safety precautions, refer to , , and .
1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D1356 Terminology Relating to Sampling and Analysis of Atmospheres
D1608 Test Method for Oxides of Nitrogen in Gaseous Combustion Products (Phenol-Disulfonic Acid Procedures)
D3154 Test Method for Average Velocity in a Duct (Pitot Tube Method)
Other Document40 CFR Part 60 Standards of Performance for Stationary Sources, Appendix A, Test Methods 2, 3, 3a, 6, 6c, 7, 7e, and 10 Available from U.S. Government Printing Office, Superintendent of Documents, 732 N. Capitol St., NW, Washington, DC 20401-0001, http://www.access.gpo.gov.
ICS Number Code 13.040.40 (Stationary source emissions)
UNSPSC Code 77121500(Air pollution)
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ASTM D5835-20, Standard Practice for Sampling Stationary Source Emissions for the Automated Determination of Gas Concentrations, ASTM International, West Conshohocken, PA, 2020, www.astm.orgBack to Top