Using a cylinder cavity and an IR thermometer to measure the emissivities of targets

Jian Liu; Cai-gen Zhang

doi:10.1117/12.188692

17 October 1994 Using a cylinder cavity and an IR thermometer to measure the emissivities of targets

Jian Liu, Cai-gen Zhang

Proceedings Volume 2269, Infrared Technology XX; (1994) https://doi.org/10.1117/12.188692
Event: SPIE's 1994 International Symposium on Optics, Imaging, and Instrumentation, 1994, San Diego, CA, United States

Abstract

By using an IR thermometer and a cylinder cavity with two walls, the space between which can be filled with water at a certain temperature, a simple and practical method is proposed to measure the emissivities of targets. The measurement principle is discussed and the formula for determining the emissivity is derived. In the experiment, several materials (targets) are used to carry out the measurement. It is shown that the experimental results are in good agreement with those obtained by an IR emission measurement instrument.

Citation Download Citation

Jian Liu and Cai-gen Zhang "Using a cylinder cavity and an IR thermometer to measure the emissivities of targets", Proc. SPIE 2269, Infrared Technology XX, (17 October 1994); https://doi.org/10.1117/12.188692

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