ISO 12039

Stationary source emissions — Determination of the mass concentration of carbon monoxide, carbon dioxide and oxygen in flue gas — Performance characteristics of automated measuring systems

The ISO 12039 standard, which includes the basic structure and most important performance features of automatic measurement systems for carbon monoxide (CO), carbon dioxide (CO2) and oxygen (O2) to be used in stationary source emissions, describes the methods and equipment for measuring the concentrations of these gases.

With the international ISO 12039, permanent monitoring of carbon monoxide (CO), carbon dioxide (CO2) and oxygen (O2) emissions measurement systems is provided. Other instrumental methods can be used provided they meet the minimum requirements recommended in this standard.

This document describes automated measurement systems for sampling, sample preparation and determining the CO, CO2 and O2 content in flue gas using instrumental methods (analyzers).

There are two types of automatic measurement systems:

— Extractive systems: In extractive systems, the representative gas sample is taken from the batch with a sampling probe and via the sampling line and sample gas treatment system.
— On-site systems: On-site systems do not require any sample processing. A representative place in the chimney should be chosen for the installation of these systems. Systems described by the ISO 12039 standard measure CO, CO2 and O2 concentrations using instrumental methods that must meet the given minimum performance specifications.