Title :
High precision, rapid readout of cryogenic temperature sensors in the Space Shuttle environment
Author :
Woodhouse, Christopher E.
Author_Institution :
NASA/Goddard Space Flight Center, Greenbelt, MD, USA
fDate :
2/1/1990 12:00:00 AM
Abstract :
A compact and rugged system designed to perform four-wire determination of the resistance of germanium resistance thermometers (GRT) near 1 K to one part in 65000 in 1 s using 20-nW excitation is described. Constraints unique to cryogenic aerospace systems are addressed. A microcomputer-controlled, hybrid analog/digital design is presented. Test results are presented, and future developments are discussed
Keywords :
aerospace instrumentation; computerised instrumentation; electric sensing devices; elemental semiconductors; germanium; low-temperature techniques; microcomputer applications; resistance thermometers; 1 K; Ge; Space Shuttle; cryogenic aerospace systems; cryogenic temperature sensors; hybrid analog/digital design; microcomputer controlled instrumentation; resistance thermometers; Cryogenics; Detectors; Extraterrestrial measurements; Germanium; Helium; Immune system; Space shuttles; Temperature measurement; Temperature sensors; Thermal resistance;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
