Oil level distinguishing device and method

The invention discloses an oil level distinguishing device and method.The oil level distinguishing device comprises a shell, a pressure measuring module, a distance measuring module, a height projection module and a processing module, and the pressure measuring module, the distance measuring module, the height projection module and the processing module are located in the shell. The distance measuring module is used for measuring the distance between the shell and the transformer; the processing module is used for calculating the first height of the oil level in the oil conservator according to the oil pressure measurement value of the pressure measurement module, and then calculating and adjusting the projection angle of the height projection module according to the first height and the distance measurement value of the distance measurement module. According to the method, the oil level in the oil conservator of the transformer can be measured, close contact with the transformer is not needed, safety acciden