FID hydrocarbon analyzer

After entering the hydrocarbon analyzer, the high-temperature sample gas is transmitted to the burner, where H2 is supplied. At the same time, filtered and purified combustion air is provided to the burner through an internal generator. Carbon and hydrogen molecules decompose at high temperatures in the flame zone of the burner, producing an ion current. The intensity of the ion current is proportional to the number of carbon atoms in the sample gas. By detecting the ion current, the concentration of total hydrocarbons in the sample gas can be accurately obtained. All parts in contact with the sample gas, such as ion detectors and pipelines, are heated at high temperatures. The detector is specially designed to obtain the current measurement output signal at any measurement range, regardless of the measured concentration. The burner is of the "nozzle" type. Special vacuum type burner design, with the sampling pump located downstream of the burner, avoids the impact of pump membrane contamination on the measured values. At the same time, higher burner operating temperatures can be achieved.