Working principle: Oxygen, nitrogen and hydrogen in metal and non-metal solid materials are detected by following the inert gas melting principle.A Tc-306 oxygen, nitrogen and hydrogen analyzer can be used to determine the oxygen, nitrogen and hydrogen content. in the determination of oxygen, nitrogen and hydrogen, the weighed sample is placed in a graphite crucible and melted by high-temperature heating in a helium (argon can be used for measuring oxygen and hydrogen alone) gas flow. The gas in the sample reacts with the carbon in the graphite crucible to generate carbon monoxide(CO), and the nitrogen and hydrogen in the sample escape in the form of nitrogen and hydrogen. These mixed gases are sent to the high-temperature converter by the carrier gas, where carbon monoxide(CO) is converted into carbon dioxide (CO2), and H2 is converted into H2O. Nitrogen does not react. The mixed gas after passing through the reformer is sent to the CO2, infrared detection cell and the H2O infrared detection cell, where carbon dioxide (CO2) and H2O are detected and the oxygen and hydrogen contents are calculated.Then, after the carbon dioxide (CO2) and water (H2O) in the mixed gas are absorbed through infrared detection,the remaining nitrogen and helium mixed gas is detected by the thermal conductivity detection cell. The test results are given after computer data processing.
