PRESSURE DETECTOR

PROBLEM TO BE SOLVED: To provide a pressure detector by which positioning of a conduit to a main body is stabilized and fixing operation of the conduit to the main body is facilitated, and which is down-sized by devising a structure of contraction means.SOLUTION: A pulsation pressure protective member disposing in a pressurizing space (pressure introduction space) 12 is made to be a pulsation pressure prevention plate 80 to simplify a structure, and a conduit 11 is fastened to a receiving member 2 by brazing 85 in a state that the tip of the conduit 11 inserted into the receiving member 2 through an opening 2b formed in the receiving member 2 abuts on the pulsation pressure prevention plate 80. The conduit 11 is positioned in a state that it abuts on the receiving member 2. Therefore, it is not necessary to cut the conduit 11 or form a rib on the conduit 11 and a structure in which the conduit 11 is mounted on the receiving member 2 is simplified. The pulsation pressure prevention plate 80 has a simple structure in which fluid flow between the pulsation pressure prevention plate 80 and the pressurizing space 12 through the conduit 11 is contracted by a small hole, and can have a pulsation prevention function.