MASS FLOW SENSOR

摘要

A mass flow sensor, comprising: a first measurement tube (1) and a second measurement tube (2). The two measurement tubes have the same structure and the same size, and are provided in a shell (34) in parallel; an included angle between an axis where a straight tube segment (24) of each measurement tube is located and an axis where a first inclined tube segment (27) is located and an included angle between the axis where the first inclined tube segment (27) is located and an axis where a first port segment (31) is located are obtuse angles; and an included angle between the axis where the straight tube segment (24) is located and an axis where a second inclined tube segment (28) is located and an included angle between the axis where the second inclined tube segment (28) is located and an axis where a second port segment (32) is located are both obtuse angles. The mass flow sensor can reduce a resisting force caused by compressed natural gas when measuring a mass flow of the compressed natural gas, and can reliably measure a distance, so as to ensure that a measurement tube where the compressed natural gas circulates has a higher mechanical quality factor, better stability and stronger vibration resistance.