Infrared pyrometer for temperature monitoring of train wheels and jet engine rotors
Abstract
Infrared optical pyrometers can be used for measuring and monitoring temperatures and hot spots of jet engine rotor blades. A probe with silicon detector applicable to jet engine rotors is described. It is designed to measure temperature in the range 1200-2000 degrees F in gases of about 3000 degrees F and 300 psi at rotor speeds exceeding 8000 rpm. The presence of water vapor and carbon dioxide with absorption bands at wavelengths longer than 1.2 microns will not affect the measurements. Fiber optics can be used to mount the detector and electronics in a remote location. Emissivity variations in the rotor blade have a very small effect on temperature measurement accuracy.
- Publication:
-
Materials Evaluation
- Pub Date:
- November 1974
- Bibcode:
- 1974MatEv..32..239W
- Keywords:
-
- Engine Monitoring Instruments;
- Infrared Instruments;
- Radiation Pyrometers;
- Temperature Measurement;
- Turbine Blades;
- Vehicle Wheels;
- Aircraft Engines;
- Jet Engines;
- Optical Measuring Instruments;
- Rail Transportation;
- Rotor Blades (Turbomachinery);
- Instrumentation and Photography