Influence of temperature gradients on the measurement accuracy of IR imaging systems

Ehud Gartenberg; A. Sidney Roberts Jr.

doi:10.1117/12.21941

1 March 1990 Influence of temperature gradients on the measurement accuracy of IR imaging systems

Ehud Gartenberg, A. Sidney Roberts Jr.

Proceedings Volume 1313, Thermosense XII: An International Conference on Thermal Sensing and Imaging Diagnostic Applications; (1990) https://doi.org/10.1117/12.21941
Event: 1990 Technical Symposium on Optics, Electro-Optics, and Sensors, 1990, Orlando, FL, United States

Abstract

Implementing a new experimental aerodynamic technique, a long electrically heated wire was placed across flows with general velocity distributions (wakes, jets). By measuring the temperature distribution along the wire with an JR camera, the flow behavior was identified. Furthermore, it is suggested that by using Nusselt number correlations, the velocity distributions can be deduced. Comparing the results with predictions based on heat transfer correlations, it was found that the IR camera cannot accurately track high gradient temperature fields. A correction procedure is outlined to account for the errors found in the measured results.

Citation Download Citation

Ehud Gartenberg and A. Sidney Roberts Jr. "Influence of temperature gradients on the measurement accuracy of IR imaging systems", Proc. SPIE 1313, Thermosense XII: An International Conference on Thermal Sensing and Imaging Diagnostic Applications, (1 March 1990); https://doi.org/10.1117/12.21941

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available