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
01.11.1990
Sonstige
Keine Angabe
Englisch
Open programmable controller software
Kraftfahrwesen | 1993
|New programmable logic controller
Online Contents | 2003
Micro Programmable Controller MELSEC-FX
British Library Online Contents | 1993