Title :
High voltage isolation of thermocouples for ion plating
Author :
Duncan, Michel G.
Author_Institution :
Martin Marietta Energy Syst. Inc., Oak Ridge, TN, USA
Abstract :
Instrumentation has been developed to isolate part thermocouples from ground by up to 10.6 kV during ion plating. A fiber-optic link provides signal isolation and errors of better than ±0.5% of full scale (485°C with type-K thermocouples). Cold-junction compensation and signal gain are provided. A computer interface to the analog output is connected to a thermocouple linearizer, maximum temperature alarm, and current-loop converter. A digital panel meter displays the temperature
Keywords :
fibre optic sensors; ion plating; optical links; temperature measurement; thermocouples; 10.6 kV; 485°C; cold-junction compensation; current-loop converter; digital panel meter; fiber-optic link; ion plating; isolation amplifier; maximum temperature alarm; part thermocouples; signal gain; signal isolation; thermocouple linearizer; type-K thermocouples; Instruments; Optical fiber amplifiers; Optical fiber devices; Optical receivers; Optical switches; Optical transmitters; Protection; Stimulated emission; Temperature measurement; Voltage;
Conference_Titel :
Southeastcon '88., IEEE Conference Proceedings
Conference_Location :
Knoxville, TN
DOI :
10.1109/SECON.1988.194907
