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                            气相色谱仪耗材气路气密性检查和维护清洁
                            发布时间:2018-04-23   点击次数:451次
                            气相色谱仪耗材气路气密性检查
                            气密性检查是一项十分重要的工作,若气路有漏,不仅直接导致仪器工作不稳定或灵敏度下降,而?#19968;?#26377;发生爆炸的危险,故在操作使?#20204;?#24517;须进行这项工作(气密检查一般是检查载气流路,氢气和空气流路若未拆动过,可不检查)。
                             
                            气相色谱仪耗材方法是,打开色谱柱箱盖,把柱子从检测器上拆下,将柱口堵死,然后开启载气流路,调低压输出压力,打开主机面板?#31995;?#36733;气旋钮,此时压力表应有指示。zui后将载气旋钮关闭,半小时内其柱前压力指示值不应有下降,若有下降则有漏,应予排除。
                            若是主机内气路有漏,则拆下主机有关侧板,用肥皂水逐个接头检漏,zui后将肥皂水擦干。 
                             
                            气相色谱仪耗材电路板的维护和清洁
                            气相色谱仪耗材准备检修前,切断仪器电源,首先用仪表空气或氮气对电路板和电路板插槽进行吹扫,吹扫时用软毛刷配合对电路板和插槽中?#39029;?#36739;多的部分进行仔细清理。操作过程中尽量戴手套操作,防止静电或手?#31995;?#27735;渍等对电路板?#31995;?#37096;分元件造成影响。
                            吹扫工作完成后,应仔细观察电路板的使?#20204;?#20917;,?#20174;?#21047;电路板或电子元件是否有明显被腐蚀现象。对电路板?#38505;?#26579;有机物的电子元件和印刷电路用脱脂棉蘸取酒精小心擦拭,电路板接口和插槽部分也要进行擦拭。

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