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About This Item
Full Description
— non-dispersive infrared absorption (NDIR);
— Fourier transform infrared (FTIR) spectroscopy;
— laser spectroscopic technique or tunable laser spectroscopy (TLS);
— non-dispersive ultraviolet absorption (NDUV);
— differential optical absorption spectroscopy (DOAS). Other equivalent instrumental methods can be used provided they meet the minimum performance requirements specified in this document. The measuring system can be validated with reference materials, according to this document, or comparable methods. Automated measuring system (AMS) based on the principles listed above has been used successfully in this application for the measuring ranges as shown in Annex E.
Document History
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ISO 7935:2024
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Stationary source emissions - Determination of the mass concentration of sulfur dioxide in flue gases - Performance characteristics of automated measuring systems- Most Recent
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ISO 7935:1992
Stationary source emissions - Determination of the mass concentration of sulfur dioxide - Performance characteristics of automated measuring methods- Historical Version