This standard specifies the concentration of carbon monoxide in gases emitted from waste incineration facilities, factories, and business establishments into chimneys to be diffused into the atmosphere as a result of the combustion of fuel and other materials, or from various manufacturing processes. Among automatic measuring systems and instruments for continuous measurement, automatic measuring instruments (hereinafter referred to as "measuring instruments") that are installed at the site and perform continuous measurements over a long period of time, using the extractive method. stipulate the following.