Steam quality flow meter

The utility model relates to a measuring instrument filed, in particular to a steam mass flow meter. The overseas general use steam mass flow meter has the shortcomings of only being used for measuring the quality of the high temperature and high pressure air with low measuring accuracy and large energy loss for measuring the over heated stream, damp saturated vapor, saturated stream, water, oil and other liquids, in particular, for measuring the flow with minor pipe diameter, high temperature and high pressure. The proposal of the utility model is to provide a steam mass flow meter for measuring the high temperature and high pressure flow with the advantages of high accuracy and little energy loss. The technical proposal is that the steam mass flow meter comprises an outer tube, power supply, a differential pressure transmitter, an intelligent display table and a condenser; a primary element with high precision is arranged inside the outer tube; the primary element is a blind tube with one end closed; a litt