The invented water level measuring cylinder with built-in type electrode in the drum is used for measuring the water level on the boiler drum remotely. The purpose of the invention is to eliminate the error of measuring the water level on the boiler drum caused by the density error of the water column resulted in the room temperature heat dispersion influence on the electrode type water level measuring cylinder. In order to eliminate the error of measuring the water level on the drum caused by that the water level measuring cylinder with built-in type electrode is unable to simulate the steam bubbles in the boiling water, the water level measuring cylinder is placed in the boiler drum. The sensing ends of the measuring electrodes are located on the exposed surface of the cylinder, with the lead wire being extended to the inside. |