Patent ID: 6043465
Filing Date: 2000-03-28
Classification: F27B,F27D,G01K,G05D,H05B

Abstract:
A temperature measurement device for measuring a temperature of a furnace heating element, said device comprising:a first electrical connector for carrying a first input signal from a heating element of a furnace, and a second electrical connector for carrying a second input signal from a transformer of said furnace, wherein said first electrical connector and said second electrical connector are cables sized and calibrated to both transmit power to the heating element and to function as drop resistors;a voltage measurement device in electrical connection with said first input signal and said second input signal;a current measurement device in electrical connection with said first input signal and said second input signal;a resistance measuring device in electrical communication with said voltage measurement device and said current measurement device, said resistance measuring device being adapted to calculate a resistance of said heating element of said furnace; anda temperature calculator in electrical communication with said resistance measuring device, said temperature calculator being adapted to compare said resistance of said heating element with a plurality of predetermined resistance versus temperature relationships to determine a temperature of said heating element corresponding to said resistance of said heating element.