Wet oxygen measuring instrument based on zirconium oxide sensor

The utility model relates to a wet oxygen measuring instrument based on a zirconium oxide sensor, and belongs to the technical field of environmental monitoring. A wet oxygen measuring instrument based on a zirconium oxide sensor comprises a feeler lever, one end of the feeler lever is connected with a probe, the probe comprises a sealing sleeve and the zirconium oxide sensor, a detection cavity with at least one open end is formed in the sealing sleeve, the detection end of the zirconium oxide sensor extends into the detection cavity, and the detection end of the zirconium oxide sensor is connected with the sealing sleeve. An end socket is detachably fixed at the end part of the sealing sleeve, a filter element is detachably fixed on the end socket, and the end socket is provided with an air inlet hole for communicating an air inlet end of the filter element with an external space. The filter element has the advantages that the filter element can be well protected, external dust can be effectively prevented