Dust cover of oxygen meter

The utility model discloses a dustproof cover for an oxygen meter, which relates to the technical field of protective devices for oxygen meters and comprises a dustproof cover, a fixing line and a fixing buckle which are sequentially connected. The fixing buckle can be connected with an oxygen meter; the dustproof cover comprises a telescopic limiting groove, and the limiting groove can enable the dustproof cover to seal the oxygen meter humidification bottle connector. When the humidification bottle of the oxygen meter is detached and the oxygen meter is in a non-working state, the dustproof cover is buckled at the connector of the humidification bottle of the oxygen meter through the telescopic limiting groove, and the dustproof cover of the oxygen meter is convenient to mount and dismount and does not need to be in direct contact with the portion of the connector of the humidification bottle. 本实用新型公开了一种氧气表防尘盖，涉及氧气表用保护装置技术领域，包括依次连接的防尘盖、固定线和固定扣；所述固定扣可与氧气表连接；防尘盖包括可伸缩的限位槽，所述限位槽可使防尘盖封闭氧气表湿化瓶接口。当氧气表拆卸掉湿化瓶处于非工作状态