Double-chamber balance liquid level meter

The utility model provides a double-chamber balance liquid level meter, which is arranged between a closed container and a differential pressure transmitter, and comprises a cylinder body, a positive pressure sampling pipe and a negative pressure sampling pipe which are communicated with the cylinder body and the closed container, a reference cup, a communicating vessel, a correction pipeline and a balance valve, the reference cup is fixedly arranged in the cylinder to divide the cylinder into a condensing chamber and an overflow chamber, and the reference cup is used for collecting liquid condensed in the condensing chamber and guiding hydraulic pressure into the positive pressure side of the differential pressure transmitter; the communicating vessel is connected with the closed container and the differential pressure transmitter so as to guide the pressure intensity of liquid in the closed container into the negative pressure side of the differential pressure transmitter; one end of the correction pipeline