Bourdon pressure gauge device

摘要

The manometer is of Bourdon type with a resilient tube (36) open at one end (38) to the pressurised fluid. The other end coupled (46) to a pointer (45) incorporates a vent (52) controlled by a valve (53) whose closure element (54) is adjustable by means of a stop (67) on the inside of a setting ring (73). The fluid is pumped (9) to the primary inlet (6) of a pressure regulator from which a branch (25) is taken to the tube via a filter (64) and a constriction (63) preferably in the form of a narrow annular opening. The ring is preferably part of a cover on the manometer housing with a transparent section through which the pointer can be read.