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107.x Dynamic Pressure Standards for Turbine Engine Testing


DRAFT

This Standards Subcommittee is in the early stages of development. The purpose and scope below are open to comments and suggestions. The first meeting of this subcommittee will be held at the IIS/PIWG meeting in La Jolla, CA June 4-7, 2012. Subcommittee Chair Adam Hurst is seeking subcommittee participants and comments prior to formal application to ISA as Standard 107.5. Contact Adam at AdamH@kulite.com.

Purpose

Measuring dynamic pressures within the varying environmental conditions of gas turbines is extremely complex due to the high-level understanding of the numerous pressure sensor technologies available, fluid mechanics and data acquisition and analysis required in order to collect accurate, reproducible dynamic pressure data. Selecting the appropriate pressure transducer to measure the desired dynamic pressure complicates the matter as there are numerous pressure sensor technologies available, such as piezoresistive, piezoelectric, optical, capacitive, resonant, etc., all of which have different advantages and limitations. The purpose of the Dynamic Pressure Standards Subcommittee is to establish a standard to compare gas turbine dynamic pressure instrumentation and a set of best practices for making accurate dynamic pressure measurements within gas turbines.

Scope

  • Standardize the specifications and validation testing methods used to define the dynamic performance of the various pressure transducer technologies to improve industry wide understanding of underlying technologies and capabilities.
  • Provide an objective review of the fundamental sensor technology used in the numerous dynamic pressure transducers available.
  • Compile a set of best practices for making accurate, wide-bandwidth dynamic pressure measurements, including transducer packaging, installation, signal conditioning, data acquisition and analysis.
  • Determine common problems encountered when making dynamic pressure measurements on gas turbines and recommend design changes to overcome such industry problems.