| ITS-90 Calibration certificate |
Page 1 of 11 |
| Serial Number: Demo |
26th November 2004 |
Thermometer Details
| Serial Number |
Demo |
| Thermometer Type |
25 Ohms |
| Description |
A Standard Platinum Resistance
Thermometer |
Calibration Details
| Calibration Type |
Demo |
| Calibration Date |
3rd November 2004 |
| Description |
A Standard Platinum Resistance
Thermometer |
The results of the calibration are given in terms of the
resistance, R(t90), or in terms of the resistance ratio,
W(t90), defined by:
W(t90) = R(t90) / R(0.01 °C)
where R(t90) is the resistance at temperature
t90 and R(0.01 °C) is the resistance at the triple point of
water.
The value of R(0.01 °C) was measured after each point in the
calibration. The final value was 25.544261 ohms.
The measurements were made with a current of 1.0 mA. The values of
resistance and W(t90) given on this certificate were obtained
directly from the measurements without adjustment to zero current.
| ITS-90 Calibration certificate |
Page 2 of 11 |
| Serial Number: Demo |
26th November 2004 |
Measurements
The following values were measured as part of the calibration:
Temperature
°C |
Resistance
Ω |
W |
Self-heating effect |
Uncertainty
(±°C) |
| WTP (start) |
25.544191Ω |
|
Ω |
|
| WTP (end) |
25.544261Ω |
|
Ω |
|
| -50°C |
20.410617Ω |
0.7990295 |
Ω |
|
| -38.8344°C |
21.563901Ω |
0.8441779 |
Ω |
|
| 29.7646°C |
28.561074Ω |
1.1181014 |
Ω |
|
| 231.927°C |
48.342838Ω |
1.8925127 |
Ω |
|
| 419.527°C |
65.608169Ω |
2.5684113 |
Ω |
|
| 660.32°C |
86.217653Ω |
3.3752260 |
Ω |
|
The difference between R(WTP) at the start and end of the calibration period
was 0.00007.
Coefficients
The calibration coefficients for equation a(W-1) +
b(W-1)2, valid over the range -38.8344°C - 29.7646°C (ITS-90 3.3.3),
are as follows:
| A |
= |
-2.796694757957740e-004 |
| B |
= |
-3.199472366290438e-004 |
The calibration coefficients for equation a(W-1) +
b(W-1)2 + c(W-1)3, valid over the range 0°C - 660.323°C
(ITS-90 3.3.2.1), are as follows:
| A |
= |
-2.982376094442697e-004 |
| B |
= |
-2.347216136920800e-005 |
| C |
= |
5.058518332814592e-006 |
These coefficients were used to generate the accompanying tables
of values.
| ITS-90 Calibration certificate |
Page 3 of 11 |
| Serial Number: Demo |
26th November 2004 |
Compliance
In order to comply with ITS 90, a thermometer must satisfy at
least one of the following requirements:
| Fixed point |
Required value |
Value |
Compliant? |
| W(Ga melt point) |
>= 1.11807 |
1.1181034 |
Yes |
| W(Hg triple point) |
<= 0.844235 |
0.8441779 |
Yes |
Graph of (W-Wr) vs T
This graph shows the difference between W and W(reference) varying against
T.
| 0.0001000 |
 |
|
| -0.0008000 |
|
-39.0000000°C |
|
660.0000000°C |
| ITS-90 Calibration certificate |
Page 4 of 11 |
| Serial Number: Demo |
26th November 2004 |
| This table calculated with equation a(W-1) +
b(W-1)2 as described in ITS-90 3.3.3 |
Temp (°C) W Difference Temp (°C) W Difference
-39.0000 0.843509 0.0040370 11.0000 1.043747 0.0039745
-38.0000 0.847545 0.0040356 12.0000 1.047720 0.0039733
-37.0000 0.851579 0.0040343 13.0000 1.051692 0.0039721
-36.0000 0.855612 0.0040330 14.0000 1.055663 0.0039709
-35.0000 0.859644 0.0040317 15.0000 1.059633 0.0039696
-34.0000 0.863674 0.0040304 16.0000 1.063601 0.0039684
-33.0000 0.867703 0.0040291 17.0000 1.067569 0.0039672
-32.0000 0.871731 0.0040278 18.0000 1.071535 0.0039660
-31.0000 0.875758 0.0040265 19.0000 1.075499 0.0039647
-30.0000 0.879783 0.0040253 20.0000 1.079463 0.0039635
-29.0000 0.883807 0.0040240 21.0000 1.083425 0.0039623
-28.0000 0.887830 0.0040227 22.0000 1.087386 0.0039611
-27.0000 0.891851 0.0040214 23.0000 1.091346 0.0039599
-26.0000 0.895871 0.0040202 24.0000 1.095305 0.0039586
-25.0000 0.899890 0.0040189 25.0000 1.099262 0.0039574
-24.0000 0.903908 0.0040176 26.0000 1.103218 0.0039562
-23.0000 0.907924 0.0040164 27.0000 1.107173 0.0039550
-22.0000 0.911939 0.0040151 28.0000 1.111127 0.0039538
-21.0000 0.915953 0.0040139 29.0000 1.115080 0.0039525
-20.0000 0.919966 0.0040126 30.0000 1.119031 0.0039513
-19.0000 0.923977 0.0040114
-18.0000 0.927987 0.0040102
-17.0000 0.931996 0.0040089
-16.0000 0.936004 0.0040077
-15.0000 0.940010 0.0040064
-14.0000 0.944016 0.0040052
-13.0000 0.948020 0.0040040
-12.0000 0.952022 0.0040027
-11.0000 0.956024 0.0040015
-10.0000 0.960024 0.0040003
-9.0000 0.964023 0.0039991
-8.0000 0.968021 0.0039978
-7.0000 0.972018 0.0039966
-6.0000 0.976013 0.0039954
-5.0000 0.980007 0.0039942
-4.0000 0.984000 0.0039929
-3.0000 0.987992 0.0039917
-2.0000 0.991982 0.0039905
-1.0000 0.995972 0.0039893
0.0000 0.999960 0.0039880
1.0000 1.003946 0.0039868
2.0000 1.007932 0.0039856
3.0000 1.011916 0.0039844
4.0000 1.015900 0.0039831
5.0000 1.019881 0.0039819
6.0000 1.023862 0.0039807
7.0000 1.027842 0.0039794
8.0000 1.031820 0.0039782
9.0000 1.035797 0.0039770
10.0000 1.039773 0.0039758
| ITS-90 Calibration certificate |
Page 5 of 11 |
| Serial Number: Demo |
26th November 2004 |
| This table calculated with equation a(W-1) +
b(W-1)2 + c(W-1)3 as described in ITS-90
3.3.2.1 |
Temp (°C) W Difference Temp (°C) W Difference
0.0000 0.999960 0.0039880 50.0000 1.197810 0.0039274
1.0000 1.003946 0.0039867 51.0000 1.201736 0.0039262
2.0000 1.007932 0.0039855 52.0000 1.205661 0.0039250
3.0000 1.011916 0.0039843 53.0000 1.209585 0.0039238
4.0000 1.015899 0.0039831 54.0000 1.213508 0.0039226
5.0000 1.019881 0.0039819 55.0000 1.217429 0.0039214
6.0000 1.023862 0.0039806 56.0000 1.221349 0.0039202
7.0000 1.027841 0.0039794 57.0000 1.225268 0.0039190
8.0000 1.031819 0.0039782 58.0000 1.229186 0.0039178
9.0000 1.035796 0.0039770 59.0000 1.233103 0.0039166
10.0000 1.039772 0.0039758 60.0000 1.237018 0.0039154
11.0000 1.043747 0.0039746 61.0000 1.240932 0.0039142
12.0000 1.047720 0.0039733 62.0000 1.244845 0.0039130
13.0000 1.051692 0.0039721 63.0000 1.248757 0.0039118
14.0000 1.055663 0.0039709 64.0000 1.252668 0.0039106
15.0000 1.059633 0.0039697 65.0000 1.256577 0.0039094
16.0000 1.063601 0.0039685 66.0000 1.260485 0.0039082
17.0000 1.067569 0.0039673 67.0000 1.264392 0.0039070
18.0000 1.071535 0.0039661 68.0000 1.268298 0.0039058
19.0000 1.075500 0.0039648 69.0000 1.272203 0.0039046
20.0000 1.079463 0.0039636 70.0000 1.276106 0.0039034
21.0000 1.083426 0.0039624 71.0000 1.280008 0.0039022
22.0000 1.087387 0.0039612 72.0000 1.283909 0.0039010
23.0000 1.091347 0.0039600 73.0000 1.287809 0.0038998
24.0000 1.095306 0.0039588 74.0000 1.291708 0.0038986
25.0000 1.099263 0.0039576 75.0000 1.295605 0.0038974
26.0000 1.103220 0.0039564 76.0000 1.299501 0.0038962
27.0000 1.107175 0.0039552 77.0000 1.303396 0.0038950
28.0000 1.111129 0.0039540 78.0000 1.307290 0.0038938
29.0000 1.115081 0.0039527 79.0000 1.311183 0.0038926
30.0000 1.119033 0.0039515 80.0000 1.315074 0.0038914
31.0000 1.122983 0.0039503 81.0000 1.318965 0.0038902
32.0000 1.126932 0.0039491 82.0000 1.322854 0.0038890
33.0000 1.130880 0.0039479 83.0000 1.326741 0.0038878
34.0000 1.134827 0.0039467 84.0000 1.330628 0.0038866
35.0000 1.138773 0.0039455 85.0000 1.334514 0.0038854
36.0000 1.142717 0.0039443 86.0000 1.338398 0.0038843
37.0000 1.146660 0.0039431 87.0000 1.342281 0.0038831
38.0000 1.150602 0.0039419 88.0000 1.346163 0.0038819
39.0000 1.154542 0.0039407 89.0000 1.350043 0.0038807
40.0000 1.158482 0.0039395 90.0000 1.353923 0.0038795
41.0000 1.162420 0.0039383 91.0000 1.357801 0.0038783
42.0000 1.166357 0.0039370 92.0000 1.361678 0.0038771
43.0000 1.170293 0.0039358 93.0000 1.365554 0.0038759
44.0000 1.174228 0.0039346 94.0000 1.369429 0.0038747
45.0000 1.178161 0.0039334 95.0000 1.373302 0.0038735
46.0000 1.182093 0.0039322 96.0000 1.377175 0.0038723
47.0000 1.186024 0.0039310 97.0000 1.381046 0.0038711
48.0000 1.189954 0.0039298 98.0000 1.384916 0.0038699
49.0000 1.193883 0.0039286 99.0000 1.388784 0.0038687
| ITS-90 Calibration certificate |
Page 6 of 11 |
| Serial Number: Demo |
26th November 2004 |
| This table calculated with equation a(W-1) +
b(W-1)2 + c(W-1)3 as described in ITS-90
3.3.2.1 |
Temp (°C) W Difference Temp (°C) W Difference
100.0000 1.392652 0.0038675 150.0000 1.584513 0.0038082
101.0000 1.396518 0.0038663 151.0000 1.588320 0.0038070
102.0000 1.400383 0.0038652 152.0000 1.592126 0.0038058
103.0000 1.404247 0.0038640 153.0000 1.595931 0.0038046
104.0000 1.408110 0.0038628 154.0000 1.599734 0.0038035
105.0000 1.411972 0.0038616 155.0000 1.603537 0.0038023
106.0000 1.415832 0.0038604 156.0000 1.607338 0.0038011
107.0000 1.419691 0.0038592 157.0000 1.611138 0.0037999
108.0000 1.423549 0.0038580 158.0000 1.614936 0.0037987
109.0000 1.427406 0.0038568 159.0000 1.618734 0.0037976
110.0000 1.431262 0.0038556 160.0000 1.622530 0.0037964
111.0000 1.435116 0.0038544 161.0000 1.626325 0.0037952
112.0000 1.438970 0.0038532 162.0000 1.630119 0.0037940
113.0000 1.442822 0.0038521 163.0000 1.633912 0.0037928
114.0000 1.446672 0.0038509 164.0000 1.637704 0.0037917
115.0000 1.450522 0.0038497 165.0000 1.641494 0.0037905
116.0000 1.454371 0.0038485 166.0000 1.645284 0.0037893
117.0000 1.458218 0.0038473 167.0000 1.649072 0.0037881
118.0000 1.462064 0.0038461 168.0000 1.652859 0.0037869
119.0000 1.465909 0.0038449 169.0000 1.656645 0.0037858
120.0000 1.469753 0.0038437 170.0000 1.660429 0.0037846
121.0000 1.473595 0.0038425 171.0000 1.664213 0.0037834
122.0000 1.477437 0.0038414 172.0000 1.667995 0.0037822
123.0000 1.481277 0.0038402 173.0000 1.671776 0.0037811
124.0000 1.485116 0.0038390 174.0000 1.675556 0.0037799
125.0000 1.488954 0.0038378 175.0000 1.679334 0.0037787
126.0000 1.492790 0.0038366 176.0000 1.683112 0.0037775
127.0000 1.496626 0.0038354 177.0000 1.686888 0.0037764
128.0000 1.500460 0.0038342 178.0000 1.690664 0.0037752
129.0000 1.504293 0.0038331 179.0000 1.694438 0.0037740
130.0000 1.508125 0.0038319 180.0000 1.698210 0.0037728
131.0000 1.511955 0.0038307 181.0000 1.701982 0.0037717
132.0000 1.515785 0.0038295 182.0000 1.705753 0.0037705
133.0000 1.519613 0.0038283 183.0000 1.709522 0.0037693
134.0000 1.523440 0.0038271 184.0000 1.713290 0.0037681
135.0000 1.527266 0.0038259 185.0000 1.717057 0.0037670
136.0000 1.531091 0.0038248 186.0000 1.720823 0.0037658
137.0000 1.534915 0.0038236 187.0000 1.724587 0.0037646
138.0000 1.538737 0.0038224 188.0000 1.728351 0.0037634
139.0000 1.542558 0.0038212 189.0000 1.732113 0.0037623
140.0000 1.546378 0.0038200 190.0000 1.735874 0.0037611
141.0000 1.550197 0.0038188 191.0000 1.739634 0.0037599
142.0000 1.554015 0.0038176 192.0000 1.743393 0.0037587
143.0000 1.557831 0.0038165 193.0000 1.747150 0.0037576
144.0000 1.561646 0.0038153 194.0000 1.750907 0.0037564
145.0000 1.565461 0.0038141 195.0000 1.754662 0.0037552
146.0000 1.569273 0.0038129 196.0000 1.758416 0.0037541
147.0000 1.573085 0.0038117 197.0000 1.762169 0.0037529
148.0000 1.576896 0.0038106 198.0000 1.765921 0.0037517
149.0000 1.580705 0.0038094 199.0000 1.769671 0.0037505
| ITS-90 Calibration certificate |
Page 7 of 11 |
| Serial Number: Demo |
26th November 2004 |
| This table calculated with equation a(W-1) +
b(W-1)2 + c(W-1)3 as described in ITS-90
3.3.2.1 |
Temp (°C) W Difference Temp (°C) W Difference
200.0000 1.773420 0.0037494 250.0000 1.959400 0.0036911
201.0000 1.777169 0.0037482 251.0000 1.963090 0.0036899
202.0000 1.780916 0.0037470 252.0000 1.966779 0.0036887
203.0000 1.784662 0.0037459 253.0000 1.970467 0.0036876
204.0000 1.788406 0.0037447 254.0000 1.974153 0.0036864
205.0000 1.792150 0.0037435 255.0000 1.977838 0.0036853
206.0000 1.795892 0.0037423 256.0000 1.981522 0.0036841
207.0000 1.799633 0.0037412 257.0000 1.985205 0.0036829
208.0000 1.803373 0.0037400 258.0000 1.988887 0.0036818
209.0000 1.807112 0.0037388 259.0000 1.992568 0.0036806
210.0000 1.810850 0.0037377 260.0000 1.996247 0.0036795
211.0000 1.814586 0.0037365 261.0000 1.999925 0.0036783
212.0000 1.818322 0.0037353 262.0000 2.003603 0.0036771
213.0000 1.822056 0.0037342 263.0000 2.007279 0.0036760
214.0000 1.825789 0.0037330 264.0000 2.010953 0.0036748
215.0000 1.829521 0.0037318 265.0000 2.014627 0.0036737
216.0000 1.833251 0.0037307 266.0000 2.018300 0.0036725
217.0000 1.836981 0.0037295 267.0000 2.021971 0.0036713
218.0000 1.840709 0.0037283 268.0000 2.025641 0.0036702
219.0000 1.844436 0.0037272 269.0000 2.029310 0.0036690
220.0000 1.848162 0.0037260 270.0000 2.032978 0.0036679
221.0000 1.851887 0.0037248 271.0000 2.036645 0.0036667
222.0000 1.855611 0.0037237 272.0000 2.040310 0.0036656
223.0000 1.859333 0.0037225 273.0000 2.043975 0.0036644
224.0000 1.863055 0.0037213 274.0000 2.047638 0.0036632
225.0000 1.866775 0.0037202 275.0000 2.051300 0.0036621
226.0000 1.870494 0.0037190 276.0000 2.054961 0.0036609
227.0000 1.874212 0.0037178 277.0000 2.058621 0.0036598
228.0000 1.877928 0.0037167 278.0000 2.062279 0.0036586
229.0000 1.881644 0.0037155 279.0000 2.065937 0.0036575
230.0000 1.885358 0.0037143 280.0000 2.069593 0.0036563
231.0000 1.889071 0.0037132 281.0000 2.073248 0.0036551
232.0000 1.892783 0.0037120 282.0000 2.076902 0.0036540
233.0000 1.896494 0.0037108 283.0000 2.080555 0.0036528
234.0000 1.900204 0.0037097 284.0000 2.084207 0.0036517
235.0000 1.903912 0.0037085 285.0000 2.087857 0.0036505
236.0000 1.907620 0.0037073 286.0000 2.091506 0.0036494
237.0000 1.911326 0.0037062 287.0000 2.095155 0.0036482
238.0000 1.915031 0.0037050 288.0000 2.098802 0.0036470
239.0000 1.918735 0.0037039 289.0000 2.102448 0.0036459
240.0000 1.922437 0.0037027 290.0000 2.106092 0.0036447
241.0000 1.926139 0.0037015 291.0000 2.109736 0.0036436
242.0000 1.929839 0.0037004 292.0000 2.113378 0.0036424
243.0000 1.933538 0.0036992 293.0000 2.117020 0.0036413
244.0000 1.937236 0.0036980 294.0000 2.120660 0.0036401
245.0000 1.940933 0.0036969 295.0000 2.124299 0.0036389
246.0000 1.944629 0.0036957 296.0000 2.127936 0.0036378
247.0000 1.948324 0.0036946 297.0000 2.131573 0.0036366
248.0000 1.952017 0.0036934 298.0000 2.135209 0.0036355
249.0000 1.955709 0.0036922 299.0000 2.138843 0.0036343
| ITS-90 Calibration certificate |
Page 8 of 11 |
| Serial Number: Demo |
26th November 2004 |
| This table calculated with equation a(W-1) +
b(W-1)2 + c(W-1)3 as described in ITS-90
3.3.2.1 |
Temp (°C) W Difference Temp (°C) W Difference
300.0000 2.142476 0.0036332 350.0000 2.322662 0.0035754
301.0000 2.146108 0.0036320 351.0000 2.326236 0.0035743
302.0000 2.149739 0.0036309 352.0000 2.329809 0.0035731
303.0000 2.153369 0.0036297 353.0000 2.333381 0.0035720
304.0000 2.156997 0.0036285 354.0000 2.336952 0.0035708
305.0000 2.160625 0.0036274 355.0000 2.340522 0.0035696
306.0000 2.164251 0.0036262 356.0000 2.344090 0.0035685
307.0000 2.167876 0.0036251 357.0000 2.347657 0.0035673
308.0000 2.171500 0.0036239 358.0000 2.351224 0.0035662
309.0000 2.175123 0.0036228 359.0000 2.354789 0.0035650
310.0000 2.178744 0.0036216 360.0000 2.358352 0.0035639
311.0000 2.182365 0.0036205 361.0000 2.361915 0.0035627
312.0000 2.185984 0.0036193 362.0000 2.365477 0.0035616
313.0000 2.189602 0.0036182 363.0000 2.369037 0.0035604
314.0000 2.193219 0.0036170 364.0000 2.372596 0.0035592
315.0000 2.196835 0.0036158 365.0000 2.376154 0.0035581
316.0000 2.200450 0.0036147 366.0000 2.379711 0.0035569
317.0000 2.204063 0.0036135 367.0000 2.383267 0.0035558
318.0000 2.207675 0.0036124 368.0000 2.386822 0.0035546
319.0000 2.211287 0.0036112 369.0000 2.390375 0.0035535
320.0000 2.214897 0.0036101 370.0000 2.393927 0.0035523
321.0000 2.218506 0.0036089 371.0000 2.397479 0.0035511
322.0000 2.222113 0.0036078 372.0000 2.401029 0.0035500
323.0000 2.225720 0.0036066 373.0000 2.404577 0.0035488
324.0000 2.229326 0.0036054 374.0000 2.408125 0.0035477
325.0000 2.232930 0.0036043 375.0000 2.411672 0.0035465
326.0000 2.236533 0.0036031 376.0000 2.415217 0.0035453
327.0000 2.240135 0.0036020 377.0000 2.418761 0.0035442
328.0000 2.243736 0.0036008 378.0000 2.422304 0.0035430
329.0000 2.247335 0.0035997 379.0000 2.425846 0.0035419
330.0000 2.250934 0.0035985 380.0000 2.429387 0.0035407
331.0000 2.254531 0.0035974 381.0000 2.432926 0.0035396
332.0000 2.258128 0.0035962 382.0000 2.436465 0.0035384
333.0000 2.261723 0.0035951 383.0000 2.440002 0.0035372
334.0000 2.265316 0.0035939 384.0000 2.443538 0.0035361
335.0000 2.268909 0.0035927 385.0000 2.447073 0.0035349
336.0000 2.272501 0.0035916 386.0000 2.450607 0.0035338
337.0000 2.276091 0.0035904 387.0000 2.454139 0.0035326
338.0000 2.279681 0.0035893 388.0000 2.457671 0.0035314
339.0000 2.283269 0.0035881 389.0000 2.461201 0.0035303
340.0000 2.286856 0.0035870 390.0000 2.464730 0.0035291
341.0000 2.290441 0.0035858 391.0000 2.468258 0.0035280
342.0000 2.294026 0.0035847 392.0000 2.471785 0.0035268
343.0000 2.297610 0.0035835 393.0000 2.475311 0.0035256
344.0000 2.301192 0.0035824 394.0000 2.478835 0.0035245
345.0000 2.304773 0.0035812 395.0000 2.482358 0.0035233
346.0000 2.308353 0.0035800 396.0000 2.485881 0.0035222
347.0000 2.311932 0.0035789 397.0000 2.489402 0.0035210
348.0000 2.315510 0.0035777 398.0000 2.492921 0.0035198
349.0000 2.319086 0.0035766 399.0000 2.496440 0.0035187
| ITS-90 Calibration certificate |
Page 9 of 11 |
| Serial Number: Demo |
26th November 2004 |
| This table calculated with equation a(W-1) +
b(W-1)2 + c(W-1)3 as described in ITS-90
3.3.2.1 |
Temp (°C) W Difference Temp (°C) W Difference
400.0000 2.499958 0.0035175 450.0000 2.674347 0.0034591
401.0000 2.503474 0.0035164 451.0000 2.677805 0.0034579
402.0000 2.506989 0.0035152 452.0000 2.681261 0.0034568
403.0000 2.510503 0.0035140 453.0000 2.684717 0.0034556
404.0000 2.514016 0.0035129 454.0000 2.688171 0.0034544
405.0000 2.517528 0.0035117 455.0000 2.691625 0.0034532
406.0000 2.521038 0.0035105 456.0000 2.695077 0.0034521
407.0000 2.524548 0.0035094 457.0000 2.698528 0.0034509
408.0000 2.528056 0.0035082 458.0000 2.701977 0.0034497
409.0000 2.531563 0.0035070 459.0000 2.705426 0.0034485
410.0000 2.535069 0.0035059 460.0000 2.708873 0.0034474
411.0000 2.538573 0.0035047 461.0000 2.712319 0.0034462
412.0000 2.542077 0.0035036 462.0000 2.715764 0.0034450
413.0000 2.545579 0.0035024 463.0000 2.719208 0.0034438
414.0000 2.549081 0.0035012 464.0000 2.722651 0.0034426
415.0000 2.552581 0.0035001 465.0000 2.726092 0.0034415
416.0000 2.556080 0.0034989 466.0000 2.729533 0.0034403
417.0000 2.559577 0.0034977 467.0000 2.732972 0.0034391
418.0000 2.563074 0.0034966 468.0000 2.736410 0.0034379
419.0000 2.566569 0.0034954 469.0000 2.739846 0.0034367
420.0000 2.570063 0.0034942 470.0000 2.743282 0.0034356
421.0000 2.573557 0.0034931 471.0000 2.746716 0.0034344
422.0000 2.577048 0.0034919 472.0000 2.750150 0.0034332
423.0000 2.580539 0.0034907 473.0000 2.753582 0.0034320
424.0000 2.584029 0.0034896 474.0000 2.757012 0.0034308
425.0000 2.587517 0.0034884 475.0000 2.760442 0.0034296
426.0000 2.591004 0.0034872 476.0000 2.763870 0.0034285
427.0000 2.594490 0.0034861 477.0000 2.767298 0.0034273
428.0000 2.597975 0.0034849 478.0000 2.770724 0.0034261
429.0000 2.601459 0.0034837 479.0000 2.774149 0.0034249
430.0000 2.604942 0.0034826 480.0000 2.777573 0.0034237
431.0000 2.608423 0.0034814 481.0000 2.780995 0.0034225
432.0000 2.611903 0.0034802 482.0000 2.784416 0.0034214
433.0000 2.615382 0.0034790 483.0000 2.787837 0.0034202
434.0000 2.618860 0.0034779 484.0000 2.791256 0.0034190
435.0000 2.622337 0.0034767 485.0000 2.794673 0.0034178
436.0000 2.625812 0.0034755 486.0000 2.798090 0.0034166
437.0000 2.629287 0.0034744 487.0000 2.801505 0.0034154
438.0000 2.632760 0.0034732 488.0000 2.804920 0.0034142
439.0000 2.636232 0.0034720 489.0000 2.808333 0.0034131
440.0000 2.639703 0.0034708 490.0000 2.811745 0.0034119
441.0000 2.643172 0.0034697 491.0000 2.815155 0.0034107
442.0000 2.646641 0.0034685 492.0000 2.818565 0.0034095
443.0000 2.650108 0.0034673 493.0000 2.821973 0.0034083
444.0000 2.653574 0.0034662 494.0000 2.825380 0.0034071
445.0000 2.657039 0.0034650 495.0000 2.828786 0.0034059
446.0000 2.660503 0.0034638 496.0000 2.832191 0.0034047
447.0000 2.663966 0.0034626 497.0000 2.835594 0.0034035
448.0000 2.667427 0.0034615 498.0000 2.838997 0.0034024
449.0000 2.670888 0.0034603 499.0000 2.842398 0.0034012
| ITS-90 Calibration certificate |
Page 10 of 11 |
| Serial Number: Demo |
26th November 2004 |
| This table calculated with equation a(W-1) +
b(W-1)2 + c(W-1)3 as described in ITS-90
3.3.2.1 |
Temp (°C) W Difference Temp (°C) W Difference
500.0000 2.845798 0.0034000 550.0000 3.014269 0.0033399
501.0000 2.849197 0.0033988 551.0000 3.017608 0.0033387
502.0000 2.852594 0.0033976 552.0000 3.020945 0.0033375
503.0000 2.855991 0.0033964 553.0000 3.024282 0.0033363
504.0000 2.859386 0.0033952 554.0000 3.027617 0.0033351
505.0000 2.862780 0.0033940 555.0000 3.030951 0.0033339
506.0000 2.866173 0.0033928 556.0000 3.034283 0.0033327
507.0000 2.869564 0.0033916 557.0000 3.037615 0.0033314
508.0000 2.872955 0.0033904 558.0000 3.040945 0.0033302
509.0000 2.876344 0.0033892 559.0000 3.044274 0.0033290
510.0000 2.879732 0.0033880 560.0000 3.047602 0.0033278
511.0000 2.883119 0.0033868 561.0000 3.050928 0.0033266
512.0000 2.886504 0.0033856 562.0000 3.054254 0.0033254
513.0000 2.889889 0.0033844 563.0000 3.057578 0.0033242
514.0000 2.893272 0.0033833 564.0000 3.060901 0.0033229
515.0000 2.896654 0.0033821 565.0000 3.064223 0.0033217
516.0000 2.900035 0.0033809 566.0000 3.067543 0.0033205
517.0000 2.903415 0.0033797 567.0000 3.070862 0.0033193
518.0000 2.906793 0.0033785 568.0000 3.074180 0.0033181
519.0000 2.910170 0.0033773 569.0000 3.077497 0.0033169
520.0000 2.913546 0.0033761 570.0000 3.080813 0.0033157
521.0000 2.916921 0.0033749 571.0000 3.084127 0.0033144
522.0000 2.920295 0.0033737 572.0000 3.087441 0.0033132
523.0000 2.923667 0.0033725 573.0000 3.090753 0.0033120
524.0000 2.927039 0.0033713 574.0000 3.094063 0.0033108
525.0000 2.930409 0.0033701 575.0000 3.097373 0.0033096
526.0000 2.933778 0.0033689 576.0000 3.100681 0.0033083
527.0000 2.937145 0.0033677 577.0000 3.103988 0.0033071
528.0000 2.940512 0.0033665 578.0000 3.107294 0.0033059
529.0000 2.943877 0.0033653 579.0000 3.110599 0.0033047
530.0000 2.947241 0.0033641 580.0000 3.113902 0.0033035
531.0000 2.950604 0.0033629 581.0000 3.117205 0.0033022
532.0000 2.953966 0.0033616 582.0000 3.120506 0.0033010
533.0000 2.957326 0.0033604 583.0000 3.123806 0.0032998
534.0000 2.960685 0.0033592 584.0000 3.127104 0.0032986
535.0000 2.964043 0.0033580 585.0000 3.130401 0.0032974
536.0000 2.967400 0.0033568 586.0000 3.133698 0.0032961
537.0000 2.970756 0.0033556 587.0000 3.136992 0.0032949
538.0000 2.974110 0.0033544 588.0000 3.140286 0.0032937
539.0000 2.977463 0.0033532 589.0000 3.143579 0.0032925
540.0000 2.980815 0.0033520 590.0000 3.146870 0.0032912
541.0000 2.984166 0.0033508 591.0000 3.150160 0.0032900
542.0000 2.987516 0.0033496 592.0000 3.153449 0.0032888
543.0000 2.990864 0.0033484 593.0000 3.156736 0.0032876
544.0000 2.994211 0.0033472 594.0000 3.160023 0.0032863
545.0000 2.997557 0.0033460 595.0000 3.163308 0.0032851
546.0000 3.000902 0.0033448 596.0000 3.166592 0.0032839
547.0000 3.004246 0.0033436 597.0000 3.169874 0.0032827
548.0000 3.007588 0.0033423 598.0000 3.173156 0.0032814
549.0000 3.010929 0.0033411 599.0000 3.176436 0.0032802
| ITS-90 Calibration certificate |
Page 11 of 11 |
| Serial Number: Demo |
26th November 2004 |
| This table calculated with equation a(W-1) +
b(W-1)2 + c(W-1)3 as described in ITS-90
3.3.2.1 |
Temp (°C) W Difference Temp (°C) W Difference
600.0000 3.179715 0.0032790 650.0000 3.342095 0.0032173
601.0000 3.182993 0.0032778 651.0000 3.345311 0.0032161
602.0000 3.186269 0.0032765 652.0000 3.348526 0.0032149
603.0000 3.189545 0.0032753 653.0000 3.351739 0.0032136
604.0000 3.192819 0.0032741 654.0000 3.354952 0.0032124
605.0000 3.196092 0.0032729 655.0000 3.358163 0.0032111
606.0000 3.199363 0.0032716 656.0000 3.361373 0.0032099
607.0000 3.202634 0.0032704 657.0000 3.364582 0.0032087
608.0000 3.205903 0.0032692 658.0000 3.367789 0.0032074
609.0000 3.209171 0.0032679 659.0000 3.370995 0.0032062
610.0000 3.212437 0.0032667 660.0000 3.374200 0.0032050
611.0000 3.215703 0.0032655 661.0000 3.377404 0.0032037
612.0000 3.218967 0.0032643
613.0000 3.222230 0.0032630
614.0000 3.225492 0.0032618
615.0000 3.228752 0.0032606
616.0000 3.232012 0.0032593
617.0000 3.235270 0.0032581
618.0000 3.238527 0.0032569
619.0000 3.241782 0.0032556
620.0000 3.245037 0.0032544
621.0000 3.248290 0.0032532
622.0000 3.251542 0.0032519
623.0000 3.254793 0.0032507
624.0000 3.258042 0.0032495
625.0000 3.261290 0.0032482
626.0000 3.264537 0.0032470
627.0000 3.267783 0.0032458
628.0000 3.271028 0.0032445
629.0000 3.274271 0.0032433
630.0000 3.277513 0.0032421
631.0000 3.280754 0.0032408
632.0000 3.283993 0.0032396
633.0000 3.287232 0.0032384
634.0000 3.290469 0.0032371
635.0000 3.293705 0.0032359
636.0000 3.296939 0.0032347
637.0000 3.300173 0.0032334
638.0000 3.303405 0.0032322
639.0000 3.306636 0.0032310
640.0000 3.309866 0.0032297
641.0000 3.313094 0.0032285
642.0000 3.316322 0.0032272
643.0000 3.319548 0.0032260
644.0000 3.322772 0.0032248
645.0000 3.325996 0.0032235
646.0000 3.329218 0.0032223
647.0000 3.332439 0.0032211
648.0000 3.335659 0.0032198
649.0000 3.338878 0.0032186