是根据安装在管道中的流量检测元件 ，由其 所产生的差压来测量流量的仪表。 Differential pressure flowmeter is a meter that measures the flow based on the differential pressure generated by the flow detection element installed in the pipeline . 等。 It includes throttling flowmeter, averaging tube flowmeter, elbow flowmeter and so on .
经 系列化 的 、 标准化 的 、规格种类繁多 的和 应用 极为 广 泛 的流量仪表。 Among them, the throttling flowmeter is a series of flow meters that have been serialized , standardized , a wide range of specifications and widely used . 检测元件( 也就是 节流装置) 种类极多，有的已经标准化， 比 如标准孔板 、 文丘里管等 等 ；有的尚未标准化，如锥形入口孔板、 1/4 圆孔板、偏心孔板、圆缺孔板等 等 。 There are many types of detection elements ( that is, throttling devices ) , some have been standardized, such as standard orifice plates , venturi tubes, etc .; some have not been standardized, such as conical inlet orifice plates, 1/4 round orifice plates , Eccentric orifice plate, round missing orifice plate, etc.
的 测量领域， 差压式流量计的使用是一直居流量仪表的首位。 In the field of flow measurement, the use of differential pressure flow meters has always ranked first in flow meters.