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故障现象机器在使用过程中出现低压报警 ,病人氧饱和度明显下降（心电监护仪上显示）。分析与检修接上模拟肺 ,把潮气量调至４００后开机检测 ,预置潮气量与屏幕显示相同 ,但模拟肺打气量明显不足。用５４２０型潮气量表测输出的实际潮气量为２４０ｍｌ（正常时应为４００ｍｌ
Symptoms Low pressure alarm occurs during use of the machine, the patient oxygen saturation decreased significantly (ECG monitor display). Analysis and repair connected to the simulated lung, the tidal volume adjusted to 400 after the boot detection, the preset tidal volume and screen display the same, but the simulated lung insufficiency significantly less. The actual tidal volume measured with the Model 5420 tidal volume meter is 240 ml (normal should be 400 ml