VARIABLE LINE SIZE AVERAGING PITOT TUBE

摘要

Systems, apparatus and methods are disclosed for coupling an averaging pitot tube (APT) primary element to a process pipe (108). A mounting assembly (112) mounts the APT primary element (120) to the process pipe (108) such that a length of the APT primary element (120) extending into the process pipe (108) is adjustable to accommodate different sized process pipe (108) diameters. The mounting assembly (112) includes a weld coupling (305) coupled to the process pipe (108) over an opening in the process pipe and having the APT primary element extending therethrough into the process pipe. An extension pipe nipple (310) is connected to the weld coupling (305) and has the APT primary element (120) extending therethrough such that a transition between a neck section (304) and a sensor section (303) of the APT primary element (120) is positioned inside the extension pipe nipple (310). A union component (315), a ferrule (320), and a cap (325) keep the APT primary element (120) in the mounted position and form a process seal.