Turbine Rotor Blade Measurements Using Infrared Pyrometry,
TECHNISCHE HOCHSCHULE AACHEN (GERMANY F R) INST FUER STRAHLANTRIEBE UND TURBOARBEITSMASCHINEN
Pagination or Media Count:
An infrared pyrometer system has been developed for the noncontacting measurement of metal temperatures on turbine rotor blades. The system with a high bandwidth ratio, a small target size and a high signal-to-noise ratio meets the requirements for the accuracy of temperature measurements to be performed on small gas turbines running at high speeds. The system set-up is described and special features of the probe head design, the lay-out of the detectoramplifier unit and the signal processing are discussed in detail. Results of the automated calibration of an infrared pyrometer system concerning the influence of variations in the target-to-lens distance, in the lens stop diameter and in the observation angle on the detector signal output are reported. Some results of temperature measurements obtained for the cooled rotor blades of a small research turbine are presented.
- Test Facilities, Equipment and Methods
- Infrared Detection and Detectors
- Jet and Gas Turbine Engines