PRESSURE SENSOR ASSEMBLY AND METHOD OF USING THE ASSEMBLY

摘要

A pressure sensor assembly comprises: a sensor housing (1) having a flexible wall (2) that is configured to deform in response to a pressure difference between the interior and exterior of the sensor housing (1); a first fiber optical cable section (6) that is bonded to the flexible wall (2) of the sensor housing such that the length of the first fiber optical cable section (6) changes in response to deformation of the wall (2) in response to the said pressure difference; a second fiber optical cable section (7) which is bonded to a thermal reference body (5), which body is connected to the sensor housing (1) by a strain decoupled connection mechanism (11,52), such as a tack weld (52) or flexible glue (11), and is configured to deform substantially solely in response to thermal deformation, such that the length of the second fiber optical cable section (7) solely changes in response to thermal deformation of the thermal reference body (5).