Oxygen analyzer
    2.
    发明授权
    Oxygen analyzer 失效
    氧气分析仪

    公开(公告)号:US4786395A

    公开(公告)日:1988-11-22

    申请号:US803288

    申请日:1985-11-07

    CPC分类号: G01N27/411 G01N27/4065

    摘要: An electrochemical oxygen pump utilizing a solid electrolyte is provided on a closed gas flow path in which a carrier gas is circulated. By applying a constant direct current voltage to the oxygen pump, the oxygen in the carrier gas is pumped-out and discharged from the path to the atmosphere so that the oxygen partial pressure in the closed gas flow path is held at a sufficiently low and constant value. Under this state, a sample containing oxygen is charged into the closed gas flow path. Then, the oxygen content in the sample can be determined by measuring the quantity of electricity which passes through the oxygen pump during pumping of the oxygen released from the sample. Under this arrangement, the oxygen content in samples of metals, alloys, metal compounds, metalloids or gases can be determined as absolute values rapidly and accurately.

    摘要翻译: PCT No.PCT / JP85 / 00111 Sec。 371日期:1985年11月7日 102(e)1985年11月7日的PCT日期1985年3月6日。在使用载气循环的封闭气体流动路径上提供利用固体电解质的电化学氧泵。 通过向氧气泵施加恒定的直流电压,将载气中的氧气抽出并从大气路径排出,使得封闭气体流路中的氧分压保持在足够低且恒定的范围 值。 在这种状态下,将含有氧的样品装入封闭气体流路。 然后,样品中的氧含量可以通过测量在从样品中释放的氧气泵送期间通过氧气泵的电量来确定。 在这种布置下,金属,合金,金属化合物,准金属或气体样品中的氧含量可以快速准确地确定为绝对值。