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MS-755金属气体分析仪系应用低压大电流脉冲热源——气相色谱法测定金属中氮、氢、氧的综合性仪器。该仪器在气路的设计上尚有一些不足,制造上有的过分简陋粗糙。该仪器设计是采用单柱单气路,测量和冲洗气路均为同一流速气流。这种气路的缺点是:在更换坩埚、清洗炉膛、装入样品时,均需在热导池停气停电的状态下进行.当分析样品时,再重新送气送电预热。这样操作不仅耗时长也影响热导池寿命及其稳定性。坩埚脱气后的废气,进入色谱柱、热导池,以每分钟50～60毫升的流速慢慢排空。加热脱气及排
MS-755 metal gas analyzer system using low-voltage high-current pulsed heat source - gas chromatography Determination of nitrogen, hydrogen, oxygen in a comprehensive instrument. The instrument in the gas circuit design, there are still some deficiencies, some rough manufacturing rough. The instrument design is the use of single-column single-gas, gas flow measurement and flushing are the same flow. The disadvantage of this gas circuit is that it is necessary to replace the crucible, clean the furnace, and load the sample while the thermal cell is out of power. When the sample is analyzed, the system is restarted. This operation not only takes a long time but also affects the life of the thermal cell and its stability. Crude gas degassed into the column, thermal conductivity pool, with a flow rate of 50 to 60 ml per minute slowly emptying. Heating degassing and row