Improving Industrial Thermocouple Temperature Measurement

摘要

Traditional industrial temperature measurement at high temperature entails the use of letter-designated thermocouples coupled to digital instruments. A known problem with the standard letter designated thermoelements is material related. Manufacturing resources are consumed to minimize the uncertainty and instability of thermocouples in high temperature applications. These measurements can be vastly improved by a twofold approach that uses electronics to improve the available material properties of the thermometers. One half of the approach is to incorporate smart technology into the sensor and instrument system. By converting to smart technology the material constraints can be relaxed, and more robust thermocouples can be produced. The paper will describe limits put on the mineral-insulated (MI) cable manufacturing process by the material constraints and describe a system and present the results of testing to show the degree of improvement that is available.