PROBLEM TO BE SOLVED: To provide means for manufacturing a pressure sensor which can be reduced in size while increasing the life and the measurement accuracy.SOLUTION: The present invention includes: a film 2； a side wall 3 forming a side supporting body around the film 2, the film 2 and the side wall 3 being made of a single unit part and forming a substantially smooth front surface 4 intended to be in contact with the fluid； and at least one strain gauge on the back surface of the film 2, the gauge facing the front surface 4.SELECTED DRAWING: Figure 3【課題】寿命及び測定の精度を向上させながら，寸法の小型化が可能な圧力センサを製造する手段を提供する。【解決手段】膜２及び前記膜２の周囲に周囲支持体を形成する周壁３とを備え，前記膜２及び前記周壁３は１つの単一部品から形成され、前記膜２及び前記周壁３は共に，前記流体と接触することが意図される実質的に平滑な前面４を形成し、膜２の裏面に前記前面４と対向して配置される少なくとも１つのひずみゲージとを備える。【選択図】図３
