Apparatus and method for decreasing vibrational sensitivity of strain-based measurements of fluid flow parameters for a fluid flow within a conduit

An apparatus for measuring one or more fluid flow parameters for a fluid flow in a conduit, comprising:

• one or more vibration sensors configured to sense a conduit to determine vibrational characteristics of the conduit;
• and
• a fluid flow sensing device having a strain sensor array configured to be secured to an outer surface of the conduit, the strain sensor array having a plurality of strain sensors disposed at different axial positions of the conduit;
• wherein the strain sensor array is secured to the outer surface of the conduit at a position so that the strain sensor array is oriented substantially symmetric with respect to an elastic axis of the vibrational characteristics of the conduit.

An apparatus for measuring one or more fluid flow parameters for a fluid flow in a conduit, comprising:

• one or more vibration sensors configured to sense a conduit to determine vibrational characteristics of the conduit;
• a processing unit in communication with the one or more vibration sensors and a memory device storing instructions, the instructions when executed cause the processing unit to determine a predominant elastic axis based on the determined vibrational characteristics;
• a fluid flow sensing device having a strain sensor array configured to be secured to an outer surface of the conduit, the strain sensor array having a plurality of strain sensors disposed at different axial positions of the conduit;
• wherein the strain sensor array is secured to the outer surface of the conduit at a position so that the strain sensor array is oriented substantially symmetric with respect to the predominant elastic axis.