Triple point of gallium used to calibrate low-temperature platinum resistance thermometers

1991 ◽  
Vol 34 (5) ◽  
pp. 466-468 ◽  
Author(s):  
Ya. E. Razhba ◽  
I. A. Razhba
Keyword(s):  
Low Temperature ◽  
Triple Point ◽  
Platinum Resistance ◽  
Platinum Resistance Thermometers ◽  
Resistance Thermometers

ITS-90 non-uniqueness and evaluation of characteristics of new 1000 Ω type platinum resistance thermometers for low-temperature measurement

2020 ◽  
Vol 31 (9) ◽  
pp. 094017 ◽  
Author(s):  
Tohru Nakano ◽  
Yasuki Kawamura ◽  
Tomosuke Imamura ◽  
Naosuke Imamura ◽  
Kazuhiro Kinoshita
Keyword(s):  
Low Temperature ◽  
Temperature Measurement ◽  
Platinum Resistance ◽  
Platinum Resistance Thermometers ◽  
Resistance Thermometers

Methods of checking standard low-temperature platinum resistance thermometers

1977 ◽  
Vol 20 (4) ◽  
pp. 527-530 ◽  
Author(s):  
L. B. Belyanskii ◽  
D. I. Sharevskaya
Keyword(s):  
Low Temperature ◽  
Platinum Resistance ◽  
Platinum Resistance Thermometers ◽  
Resistance Thermometers

THE CALIBRATION OF PLATINUM RESISTANCE THERMOMETERS IN THE TEMPERATURE RANGE 11° TO 90°K

1951 ◽  
Vol 29 (2) ◽  
pp. 142-150 ◽  
Author(s):  
J. M. Los ◽  
J. A. Morrison
Keyword(s):  
Low Temperature ◽  
Temperature Scale ◽  
Platinum Resistance ◽  
National Bureau ◽  
International Temperature Scale ◽  
International Temperature ◽  
Platinum Resistance Thermometers ◽  
Resistance Thermometers ◽  
Corrective Term ◽  
Low Temperature Calorimetry

A set of six platinum resistance thermometers of a form suitable for low temperature calorimetry has been made and calibrated in the region 11° to 90°K. by intercomparison with a similar thermometer which had been calibrated at the National Bureau of Standards. Above 90°K. calibration has been made on the International Temperature Scale.Using the intercomparison data, it has been possible to derive a method whereby for these thermometers the scale for the region 20° to 90°K. may be found to within 0.002°C. by means of fixed points. The method applies a 'Z function' of the type used at the National Bureau of Standards (13), plus a corrective term which depends upon the resistance of the thermometer at the boiling point of hydrogen and upon the normal constants which are determined for the International Temperature Scale above 90°K.

THE FREEZING POINTS OF HIGH PURITY METALS AS PRECISION TEMPERATURE STANDARDS: I. PRECISION MEASUREMENTS WITH STANDARD RESISTANCE THERMOMETERS

1957 ◽  
Vol 35 (1) ◽  
pp. 78-90 ◽  
Author(s):  
E. H. McLaren
Keyword(s):  
Triple Point ◽  
Cold Work ◽  
Platinum Resistance ◽  
Intrinsic Resistance ◽  
Long Term Stability ◽  
Resistance Bridge ◽  
Platinum Resistance Thermometers ◽  
Resistance Thermometers ◽  
Precision Temperature

The techniques and difficulties encountered in measuring temperatures to the highest precision with platinum resistance thermometers are discussed. It is shown that the relative drift of the resistance coils in the Mueller resistance bridge used for these measurements is less than a part per million per year. The intrinsic resistance of a platinum thermometer is comparatively unstable, and results showing some effects of cold work and heat treatment on several thermometers are given.As each precision temperature determination involves the resistance of the thermometer at the triple point of water, extensive measurements have been carried out to obtain information on: (a) the reproducibility of temperature in particular cells, (b) the variation in temperature among cells, and (c) the long term stability of cell temperatures.The limiting uncertainties in temperature measurements due to variation in the bridge, the thermometers, and the triple point cells are each of the order of 10−4 °C.

A Low Temperature Adiabatic Calorimeter. The Calibration of the Platinum Resistance Thermometers

1941 ◽  
Vol 63 (12) ◽  
pp. 3488-3492 ◽  
Author(s):  
Don M. Yost ◽  
Clifford S. Garner ◽  
Darrell W. Osborne ◽  
Thor R. Rubin ◽  
Horace Russell
Keyword(s):  
Low Temperature ◽  
Adiabatic Calorimeter ◽  
Platinum Resistance ◽  
Platinum Resistance Thermometers ◽  
Resistance Thermometers

scholarly journals On Klemens and Lowenthal's Paper on Deviations from Matthiessen's Rule

1962 ◽  
Vol 15 (3) ◽  
pp. 441
Author(s):  
RJ Berry ◽  
DR Lovejoy
Keyword(s):  
Low Temperature ◽  
Simple Formula ◽  
Platinum Resistance ◽  
Platinum Resistance Thermometers ◽  
Resistance Thermometers ◽  
Conduction Theory ◽  
Resistance Thermometry ◽  
Matthiessen's Rule ◽  
Band Conduction ◽  
Matthiessen’S Rule

In a recent paper on deviations from Matthiessen's rule for platinum Klemens and Lowenthal (1961) classified the deviation patterns, calculated for a number of different platinum resistance thermometers, into three groups, and reported that only one of these groups followed the pattern predicted by Sondheimer and Wilson's (1947) two-band conduction theory. They suggested that if resistors belonging to one particular group (though no matter which group) were selected for use in low temperature platinum resistance thermometry then the resistance-temperature relationship could be expressed accurately by a relatively simple formula. We believe that Klemens and Lowenthal's method of classifying the resistors into groups is open to serious objection and that consequently some of their important conclusions are not necessarily valid.

RADIATION EFFECTS IN PRECISION RESISTANCE THERMOMETRY: II. ILLUMINATION EFFECT ON TEMPERATURE MEASUREMENT IN WATER TRIPLE-POINT CELLS PACKED IN CRUSHED ICE

1966 ◽  
Vol 44 (11) ◽  
pp. 2653-2659 ◽  
Author(s):  
E. H. McLaren ◽  
E. G. Murdock
Keyword(s):  
Triple Point ◽  
Radiation Effects ◽  
Near Infrared ◽  
Radiation Shielding ◽  
Platinum Resistance ◽  
Platinum Resistance Thermometers ◽  
Resistance Thermometers ◽  
Temperature Errors ◽  
Crushed Ice ◽  
Water Triple Point

The heating effect of normal laboratory illumination on the sensors of standard platinum resistance thermometers immersed in a standard water triple-point cell packed in crushed ice has been investigated. This study shows that the absorption by the platinum sensors of luminous and near-infrared radiation transmitted through the ice pack could easily amount to temperature errors as large as 0.000 5 °C. Any illumination error must be eliminated by making all measurements in the dark or under adequate radiation shielding.

Comparison of low-temperature scales of platinum resistance thermometers

1959 ◽  
Vol 2 (8) ◽  
pp. 613-614
Author(s):  
D. N. Astrov ◽  
M. P. Orlova ◽  
P. G. Strelkov ◽  
D. I. Sharevskaya
Keyword(s):  
Low Temperature ◽  
Platinum Resistance ◽  
Temperature Scales ◽  
Platinum Resistance Thermometers ◽  
Resistance Thermometers
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