Industrial temp. monitoring system using light pipe as temp. sensor, esp. for long pipe-like structure

摘要

The temp. monitoring system involves a light pipe in the form of a coil winding (3) at certain intervals along the structure to be measured. The coil is wound onto a spool body (2) inside a housing (1), which is fixed via a bolt (4) to e.g. an electric cable. A heating arrangement (6) can be arranged on the spool body (5) and underneath the light pipe windings (7) in the housing (10), which can be powered by eddy currents from the electric cable. A light pipe splice case (11) together with a steel plate (12) is situated in an external housing (10) along with upper and lower heat insulation plates (13,14).