techniques for approximating the international temperature ... - BIPM
techniques for approximating the international temperature ... - BIPM techniques for approximating the international temperature ... - BIPM
30 Fig. 3.2a: Apparatus for the calibration of long-stem platinum resistance thermometers at the argon triple point using a sealed cell: 1, long-stem platinum resistance thermometer; 2, stainless-steel body of cell; 3, thermometer tube; 4, polyurethane foam; 5, solid-liquid argon; 6, bath of liquid nitrogen; 7, helium gas inlet; 8, manometer; 9, valve; 10, filling tube for liquid nitrogen; 11, cryostat [Bonnier and Moser (1983)];
31 Fig. 3.2b: Apparatus for the calibration and comparison of long-stem and capsule platinum resistance thermometers from the triple point of argon to the triple point of indium [Ancsin and Phillips (1984)].
- Page 1 and 2: BUREAU INTERNATIONAL DES POIDS ET M
- Page 3 and 4: TECHNIQUES FOR APPROXIMATING THE IN
- Page 5 and 6: iv W(100 °C) = 1.385 (exact value
- Page 7 and 8: Centre for Quantum Metrology Nation
- Page 9 and 10: 2. Type J viii a) temperature range
- Page 11 and 12: c) temperature range from 1664.5 °
- Page 13 and 14: xii
- Page 15 and 16: xiv Acknowledgments This monograph
- Page 17 and 18: xvi 3.3.2 Melting Points of Gold (1
- Page 19 and 20: xviii 11.3 Thermal Contact 111 11.4
- Page 21 and 22: 1 1. Introduction The Comité Consu
- Page 23 and 24: 3 thermometers except in special ex
- Page 25 and 26: 5 The accuracies with which tempera
- Page 27 and 28: Table 1.1: Summary of Some Properti
- Page 29 and 30: PART 1: TECHNIQUES AND THERMOMETERS
- Page 31 and 32: 11 Fig. 2.1: One form of apparatus
- Page 33 and 34: 13 Fig. 2.3: Flow cryostat, shown w
- Page 35 and 36: 15 Fig. 2.4: Stirred liquid bath fo
- Page 37 and 38: 17 contained within a cylindrical c
- Page 39 and 40: 19 Fig. 2.5: Schematic drawing of a
- Page 41 and 42: 21 device SRM 767 [Schooley et al.
- Page 43 and 44: 23 Table 3.1 : Current Best Estimat
- Page 45: 25 The widely-used, but not very re
- Page 48 and 49: 28 fraction of sample melted) can g
- Page 52 and 53: 32 Fig. 3.3: Sealed cell for realiz
- Page 54 and 55: 34 Final readings of the thermomete
- Page 56 and 57: 36 temperatures differ (usually) sy
- Page 58 and 59: 38 Fig. 3.4: Cross sectional drawin
- Page 60 and 61: 40 Fig. 3.5: Miniature graphite bla
- Page 62 and 63: 42 4. Germanium Resistance Thermome
- Page 64 and 65: 44 Fig. 4.3: Example of the Π-type
- Page 66 and 67: 46 Fig. 4.4: Differences between dc
- Page 68 and 69: 48 - conversely, p-doped thermomete
- Page 70 and 71: 50 Fig. 4.6: Effect of a radio-freq
- Page 72 and 73: 52 that it will not be subject to m
- Page 74 and 75: ln R n = ∑ i= 0 54 ⎛ ln T - P
- Page 76 and 77: 56 Fig. 5.1: Resistance (Ω) and s
- Page 78 and 79: 58 thermometer wires) caused a more
- Page 80 and 81: 60 6. Vapour Pressure Thermometry*
- Page 82 and 83: 62 transitions, but it could be app
- Page 84 and 85: n ∑ i= 2 64 L x [ Π − k ] P =
- Page 86 and 87: 66 Fig. 6.3: Diagram at constant pr
- Page 88 and 89: 68 Fig. 6.4: Schematic construction
- Page 90 and 91: 70 Fig. 6.6: Use of an evacuated ja
- Page 92 and 93: 72 Following this, the connecting t
- Page 94 and 95: 74 Fig. 6.9: (c) N2, CO, Ar, O2, CH
- Page 96 and 97: 76 the Weber-Schmidt equation [Webe
- Page 98 and 99: 78 Table 6.1: Temperature values (K
30<br />
Fig. 3.2a: Apparatus <strong>for</strong> <strong>the</strong> calibration of long-stem platinum resistance <strong>the</strong>rmometers at<br />
<strong>the</strong> argon triple point using a sealed cell: 1, long-stem platinum resistance<br />
<strong>the</strong>rmometer; 2, stainless-steel body of cell; 3, <strong>the</strong>rmometer tube; 4,<br />
polyurethane foam; 5, solid-liquid argon; 6, bath of liquid nitrogen; 7, helium gas<br />
inlet; 8, manometer; 9, valve; 10, filling tube <strong>for</strong> liquid nitrogen; 11, cryostat<br />
[Bonnier and Moser (1983)];
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