Effect of scattered light on temperature measurement by optical pyrometry

1976 ◽  
Vol 47 (12) ◽  
pp. 1547-1550 ◽  
Author(s):  
R. E. Einziger ◽  
J. N. Mundy
Keyword(s):  
Temperature Measurement ◽  
Scattered Light ◽  
Optical Pyrometry

scholarly journals CEA’s Optical Pyrometry Technique for Non-Contact Temperature Measurement in High Temperature Surroundings

2018 ◽  
Vol 170 ◽  
pp. 08004
Author(s):  
B. Bouvry ◽  
G. Cheymol ◽  
C. Gallou ◽  
H. Maskrot ◽  
C. Destouches ◽  
...  
Keyword(s):  
High Temperature ◽  
Temperature Measurement ◽  
Contact Temperature ◽  
Optical Pyrometry

Turbine Pyrometry: An Equipment Manufacturer’s View

1981 ◽  
Author(s):  
T. G. R. Beynon
Keyword(s):  
Temperature Measurement ◽  
Gas Turbines ◽  
Optical Signal ◽  
Metal Temperature ◽  
Optical Noise ◽  
Optical Pyrometry ◽  
Technical Developments ◽  
The One ◽  
And Control ◽  
Measurement And Control

Optical pyrometry is potentially a valuable technique for temperature measurement and control in gas turbines. However the problems associated with obtaining a clean signal interpretable as a metal temperature can be formidable. The difficulties are examined here in the light of more than 18 years’ involvement, by the author’s company, with turbine pyrometry. A number of “ground-rules” are formulated which, it is hoped, will be useful to new and prospective users of the method. Experienced users may find the perspective adopted valuable. Some possibilities arising from recent technical developments are highlighted. If certain “ground-rules” can be followed in design of the pyrometer and its installation then this model is trivial. If the rules are contravened the model rapidly becomes intractable. In fast (blade profiling) applications the finite bandwidth of the pyrometer system must be considered. In slow systems the “one-sided” nature of most optical noise cannot be ignored. Finally provision of an adequate optical signal and maintenance of a clean lens are obvious prerequisites.

scholarly journals Development of a Wide Range Temperature Pyrometer for Gas Turbine Application

1995 ◽  
Author(s):  
H. K. Moon ◽  
B. Glezer ◽  
B. Mink ◽  
W. Marvin
Keyword(s):  
Low Temperature ◽  
Temperature Measurement ◽  
Gas Turbines ◽  
Temperature Model ◽  
Absorption Bands ◽  
Optical Pyrometry ◽  
Long Wavelength ◽  
Design Concepts ◽  
Wide Range ◽  
Turbine Component

The applications of optical pyrometry in gas turbines are diverse. Optical pyrometry provides many advantages over other techniques for temperature measurement. The inherent problems associated with low temperature measurement have limited optical pyrometry equipment for the hot cascade and low temperature turbine component applications. Traditional uses of this type of equipment have been limited to high temperature (>600°C) measurements. A wide range temperature pyrometer (>230°C) with unique design concepts was developed to address these issues. The pyrometer effectively operated in a long wavelength (2.00 to 2.25 mm) radiation to measure a relatively low temperature, as well as avoid the absorption bands of the gases commonly present in gas turbines. It was analytically and experimentally proven that the pyrometer was practically insensitive to the distance and view angle. The pyrometer was calibrated in a controlled-temperature model, and its reliability and applicability were demonstrated in a hot cascade environment.

Sign in / Sign up

Export Citation Format

Share Document