Product Description: UQK built-in liquid level controller is the user needs to control the level of liquid level and the development of a new generation of liquid level controller. The utility model has the advantages of automatic and precise control of the liquid level, no need of manual operation, stable and reliable, etc.. Automatic control is widely used as medium level in petroleum, chemical, fertilizer, rubber, medicine, military, electric power, shipbuilding, food and other industries of various tower, tank, tank, spherical container and boiler equipment. The main technical index range: 300 ~ 6000mm operating temperature: -40 to 200 DEG C control accuracy: ≤ ± 10mm ≥ 0.5g/cm: medium density pressure rating: ≤ 22MPa contact power: 220V, 100mA working principle of the liquid level controller is composed of a body, a float, flange, and the dry reed pipe, the structure shown in Fig. show. Working principle: liquid drives the magnets in the float, float prompted reed attraction control relay, intermediate relay contactor control by pushing into the liquid motor, the liquid level is maintained in a certain range, so as to achieve the purpose of automatic control.