%0 Journal Article %A Evseev , Aleksei R. %D 1998 %I Begell House %K Fiber optics; measurement techniques; liquid films %N 6-8 %P 535-543 %R 10.1615/HeatTransRes.v29.i6-8.250 %T Liquid Film Thickness Measurement by the Fiber-Optical Probe %U https://www.dl.begellhouse.com/journals/46784ef93dddff27,1989b3e54ecd1c76,526acbe3437a717c.html %V 29 %X On the basis of fiber-optical probes (FOP) of the reflecting type a measurement technique of amplitude-frequency characteristics of liquid film thickness has been developed. The elaborated FOP probes have the spatial resolution less than 0.2−0.3 mm, time resolution − less than 10−3−10−4 s, and high measurement accuracy (1−2)%. The static, dynamical and angular FOP characteristics are delivered. The liquid nitrogen film thickness measurements have been conducted at an inaccessible location. The fiber communication line is 10 m length. The experimental data agree well with capacitance measurements which were performed simultaneously. %8 1998-12-01