Oxygen analyzer EMGA-920
flowcontrolcarbon monoxide

oxygen analyzer
oxygen analyzer
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Tested parameter
control, temperature, flow, nitrogen, signal, oxygen, carbon dioxide, carbon monoxide, hydrogen
air quality
thermal conductivity
Tested marker


This is an oxygen and nitrogen elemental analyzer with high accuracy and repeatability suiting to cutting-edge technology's R&D as well as quality control in the market of steel, new materials, catalyst and so on. The oxygen is measured as carbon monoxide and carbon dioxide by a non-dispersive infrared detector and the nitrogen by a thermal conductivity detector. Principle and Gas flow diagram The sample is placed in a graphite crucible and the crucible is maintained between the upper and the lower electrode of the impulse furnace. A high current power passes through the crucible to create a high temperature. The oxide in the sample reacts with the graphite crucible, and is extracted as carbon monoxide (CO), and carried together with the carrier gas. The extracted gas is directly analysed after the dust filter. According to the oxygen concentration, it is determined by CO or CO2 after pass throw oxidizer (Copper Oxide) with a non dispersive Infra-Red analyser (NDIR). Super High Performance Wide range and high accuracy measurement *Range: Oxygen: 0-5%, Nitrogen: 0-3%, Hydrogen: 0-0.25% *Accuracy: σn-1≦0.3ppm or CV≦1.0% for STD sample σn-1≦0.02ppm or CV≦0.5% for Reference gas *Accuracy H: σn-1≦0.04ppm or RSD≦2.0% for Reference gas Double detectors of oxygen (CO and CO2), long type cell and optimized design of TCD provide wide range measurements. Optimization of the signal processing reduces by half the electrical noise compared to conventional model. Standard EMGA fulfils requirements of the standard method for analysis of steel titanium, ceramics etc… EX) *ISO10720, ISO17053 *JIS G1228 *ASTM E1019, ASTM E1569, ASTM E1409…


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