DISPLACEMENT BASED PRESSURE SENSOR MEASURING UNSTEADY PRESSURE IN A PIPE

摘要

A non-intrusive pressure sensor (14) for measuring pressures within a pipe (12) includes a displacement based sensor disposed on a surface of the pipe (12). The displacement based sensor (14) measures the radial displacement response of the surface of the pipe (12) to the unsteady pressure. The displacement based sensor may comprise an accelerometer, an absolute velocity sensor, or an absolute displacement sensor. One or more of sensors (14-18) may be axially distributed along the pipe (12) or alternatively the sensors (14-17) may be circumferentially distributed about the pipe (12).