SENSOR FOR DETECTING PRESSURE WAVES IN A FLUID, PROVIDED WITH STATIC PRESSURE COMPENSATION

摘要

A pressure sensor device having a chamber filled with a pressure transfer medium, the chamber having at least one window that at least partly transfers pressure waves in a fluid; an optical fiber extending longitudinally through the chamber, the optical fiber including a Fiber Bragg Grating and two mounting spots at opposite sides of the Fiber Bragg Grating; a frame having a first frame end and a longitudinally opposite second frame end; a pressure response assembly connected in parallel to a fiber portion between the two mounting spots, the pressure response assembly including a series arrangement of a pressure response means and a movement damper; and a resilient member connected in series to the fiber portion and the frame.