Dissolved oxygen measuring apparatu

The utility model discloses a dissolved oxygen measuring apparatu, including control panel, connecting rod and electrode, the electrode sets up in the below of connecting rod to pass the connecting rod and be connected with the control panel electricity, still include: a visor for covering the electrode, be provided with the guide bar on the connecting rod, the cooperation of sliding from top to bottom of visor and guide bar, prevent the locking mechanical system of visor roll -off guide bar, be used for the detection device of tracer liquid, when having detected liquid, send the detected signal, be used for in response to the detected signal to the control mechanism that the control protection lid was opened and close. Beneficial effect: set up the visor and come guard electrode, made it not fragile, the visor can rise automatically, does not need artificially to open the visor labour saving and time saving. 本实用新型公开了种溶解氧测量仪，包括控制面板、连接杆和电极，所述电极设置于连接杆的下方，并穿过连接杆与控制面板电连接，还包括：用于盖住电极的保护盖，所述连接杆上设置有导向杆，所述保护盖与导向杆上下滑移配