Bypass unit for a flowmeter sensor

A bypass unit of a flowmeter sensor, said unit comprising:

• a substantially cylindrical sensor tube through which a fluid is to flow;
• elements of a flowmeter cooperating with said sensor tube;
• a housing having a peripheral wall defining a chamber therein, said housing also defining an inlet path communicating with said chamber, an outlet path communicating with said chamber, an upstream bypass path through which a portion of the fluid in said chamber will be diverted to said sensor tube, and a downstream bypass path through which fluid flowing from said sensor tube will be returned to said chamber;
• and
• a bypass member disposed in said chamber and spaced from the peripheral wall of said housing such that a space is defined in said chamber between said bypass member and said peripheral wall, said bypass member defining an inlet port extending coaxially to and communicating with said inlet path, an outlet port extending coaxially to and communicating with said outlet path, first and second annular recesses in the outer periphery of the bypass member, and a plurality of radial ports extending radially outwardly from said inlet and said outlet ports, each said radial port extending radially outwardly from said inlet port being open to said first annular recess, and each said radial port extending radially outwardly from said outlet port being open to said second annular recess such that each of said radial ports communicates with said space.