VERSTELLBARE DRUCKFUEHLER

A pressure sensor includes a diaphragm mounted in relatively fixed relationship with respect to an orifice unit interconnected to the end of a threaded pipe. A threaded adjustment nut is provided with an internal thread to receive the pipe member and includes an outer threaded portion which is threaded into a housing. The inner and outer threads of the adjustment nut are of a very slightly different pitch. The threaded pipe is mounted to prevent rotation of the threaded support member while permitting axial movement thereof. Rotation of the adjustment nut results in axial displacement of the threaded pipe and orifice unit with respect to the diaphragm.