A Note on Estimation of Pressure Sensor Time Constant from the Normal Operating Data

A set of pressure data recorded from the primary coolant system of a pressurized water reactor under normal operation is examined. For pressure sensors under study, it is found that the range of sampling intervals adequate to abstract pressure dynamics is ∼0.2 to 0.8 ms. The estimated time constant of the pressure sensor for operating data is 1.83 ms.