RESTRICTION FLOWMETER

摘要

A restriction flowmeter, comprising a measuring tube (31) having two members, that are, a primary measuring tube (31A) and a secondary measuring tube (31B). The primary measuring tube (31A) comprises a primary pressure outlet (4) and is flange-connected to a bent tube (21) after being angularly adjusted around its axis relative to the secondary measuring tube (31B). By this angular adjustment of the primary measuring tube (31A), the general average height of the primary pressure (PH) of measured fluid (7) near the primary pressure outlet (4) is allowed to generally match the height of the primary pressure outlet (4). Since the average height of the primary pressure (PH) of the measured fluid (7) near the primary pressure outlet (4) when the primary measurement tube (31A) is connected to the bent tube (21) is generally equal to the center height of the primary measurement tube (31A), the primary measuring tube (31A) is connected to the secondary measuring tube (31B) in the state of the primary pressure outlet (4) facing just sideways. The secondary measurement tube (31B) comprises a restrictor (3) and the secondary pressure outlet (5), and is flange-connected to a horizontal tube (20B) in the state of the secondary pressure outlet (5) facing upward.