| 摘要 |
Device for providing a light signal indicative of the refractive index of a liquid and for detecting the presence of gas bubbles in this liquid which comprising an elongated light-conducting body having an input section, an intermediate section connected to said input section and an output section connected to said intermediate section, said intermediate section being curved so that the injection of light into said body at said input section results in a luminous signal at said output section corresponding to the refractive index of said liquid, a light source connected to said input section, a photoelectric transducer connected to said output section for producing an electrical signal representing the light signal at said output section, said electrical signal having a high-frequency component upon the passage of bubbles along said intermediate section and means connected to said transducer for separating said high-frequency component from another component for indicating the presence of gas bubbles in said liquid. |
