MET509监护仪是美国产的多功能监护仪，以下简称509监护仪，该机体积小，抗干扰能力强以及具有高灵敏度的参数监测指标，深受各大医院欢迎。我院的这台509监护仪购于1993年，用于手术患者的监护，最近，我们在使用前的维护、保养中发现该机出现故障，现介绍如下：故障现象在维 MET509 monitor is a multi-function monitor produced in the United States, hereinafter referred to as the 509 monitor. The small size, strong anti-interference ability and high-sensitivity parameter monitoring indicators are welcomed by major hospitals. Our 509 monitor in our hospital was purchased in 1993 for the monitoring of surgical patients. Recently, we found that the machine was malfunctioning during maintenance and maintenance before use. Now we introduce the following: Failure phenomenon in the dimension