Stability of germanium resistance thermometers at 20 K

Besley, L. M.; Plumb, H.H.

doi:10.1063/1.1135255

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B Electrical Instrumentation1

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1978

1995

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Cited by 18 publications

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“…Since one Cryobridge voltage lead (V -) must be grounded, II we chose to attach the corresponding voltage lead for each of 12 thermometer positions (2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13) to a common (ground) lead, with a selector switch activating sets of reed relays which connected the remaining three leads for each thermometer in turn to the Cryobridge. All four leads were switched for the two positions (0, PRT; 1, GRT) which were used in turn to monitor the block temperature with the dc potentiometer system.…”

Section: B Electrical Instrumentationmentioning

confidence: 99%

Characteristics of germanium resistance thermometers from 1 to 35 K and the ISU magnetic temperature scale

Anderson

1978

Review of Scientific Instruments

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A low-temperature comparator cryostat with a self-balancing ac resistance bridge and a data acquisition system have been used over the past several years to calibrate approximately 45 germanium resistance thermometers, many of them several times. Examples are given of typical thermometer reproducibility results, together with algorithms for estimating self-heating and ac-dc resistance differences for these thermometers. Recent experiences with rhodium-iron resistance thermometry are described in terms of a comparison of previous ISU magnetic thermometry with gas thermometry results from the National Physical Laboratory in England.

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