The utility model relates to a carbide piece thing burden level examining device, belong to carbide legal system polyvinyl chloride in the acetylene gas produce technical field. Including instrument seat, instrument connecting pipe, microwave level meter, instrument seat one end is connected through the connecting piece with the instrument connecting pipe, has set gradually between instrument seat and the instrument connecting pipe to seal to fill up, visit pipe and the whole pad of tetrafluoro, and the instrument connecting pipe other end is connected with the microwave level meter. Adopt microwave signal measurement, non -contact methods of measurement overcomes that the dust is big, the anomalous influence of testee appearance, but have or not the carbide material stock in the passing signal judgement direct indication feed bin.