DEVICE AND METHOD FOR MEASURING FLUID PULSATION PRESSURE, AND DEVICE AND METHOD FOR MEASURING PULSE PRESSURE

摘要

PROBLEM TO BE SOLVED: To provide a fluid pulsation pressure measuring device capable of being always mounted and having a simple calibration without using a separate and special measuring device when the pressure of the liquid which flows in a conduit.SOLUTION: The fluid pulsation pressure measuring device includes at least two conduit diameter sensors 1, 2 mutually and separately placed. Reflection arrival time is measured by sending and receiving wave motion to the conduit arranged inside a measurement object part using signal operation parts 11, 21 by one or the other sensor, a water head difference is derived by a height position decision parts 24, 28 based on the distance between the respective sensors, and an amount of variation of the conduit and a diametrical difference of the conduit are derived by a pulse pressure signal operation part 31 so that pressure difference between the maximum value and the minimum value by conducting calibration using the water head difference is obtained.