Microprocessor-based controller regulates electrical power supplied to heater in each zone of three-zone directional-solidification furnace. Intended primarily for use in microgravity experiments aboard KC-135 airplane, controller also used on ground. Offers advantage of low electrical noise and consequent minimal interference with low-level signals put out by thermocouples and other sensors used in experiments. Achieved by heating with direct (instead of alternating) current and not pulsing heating current.
Three-Zone Programmable Temperature Controller
NASA Tech Briefs ; 14 , 11
1990-11-01
Sonstige
Keine Angabe
Englisch
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