Liquid thermometer

摘要

In a liquid thermometer, the capillary (1) is provided in an optical waveguide (5) designed as a hollow fibre, where the length of the liquid thread (4) determines how much light is coupled out of the optical waveguide (5) before the light is reflected on the front face (9) and fed to a photoreceiver (15) for intensity measurement and therefore temperature measurement. <IMAGE>