A PILOT APPARATUS FOR MEASURING MIDDLE WALL TEMPERATURES AND TEMPERATURE DIFFERENCES

摘要

A pilot apparatus for measuring middle wall temperatures and temperature differences contains heat-generating element, in which inside direct electricheater is disposed which is electrically connected with a laboratory autotransformer, three thermoprobes. The walls of heat-generating element are made of the steel tube, which surface is covered with dense winding steel wire covered with heat-resistant paint for the isolation. From above the winding is coated with uniform layer of tin with which the space between heat-generating element and external steel tube is also filled. The heat-generatingelement and thermoprobes are electrically connected with the unit for treatment and measurement of data.