<p> BIPM coefficients </p>

e432dc5e-5912-4f74-b0c7-ad34ca71bb19 8 4 5 decimal

&[DATE] &[TIME] - &[FILENAME]

. . . BIPM Pt 100 . . . 78th meeting 1989

]]> <p> BIPM coefficients </p>

◄ BIPM 78th meeting 1989 ◄

eit 90 Pt100 fixed points [°C, Ω] 259.3467 - 0.00119007 TP Hydrogen 248.5939 - 0.00844974 TP Neon 218.7916 - 0.09171804 TP Oxygen 189.3442 - 0.21585975 TP Argon 38.8344 - 0.84414211 TP Mercury 0.01 1 TP Water 29.7646 1.11813889 MP Gallium 156.5985 1.60980185 FP Indium 231.928 1.89279768 FP Tin 419.527 2.5689173 FP Zinc 660.323 3.3760086 FP Aluminum 961.78 4.28642053 FP Silver 123 mat

B 0.183324722 0.240975303 0.209108771 0.190439972 0.142648498 0.077993465 0.012475611 0.032267127 - 0.075291522 - 0.056470670 - 0.076201285 0.123893204 0.029201193 - 0.091173542 - 0.001317696 0.026025526 161 mat :

D 439.932854 472.418020 37.684494 7.472018 2.920828 0.005184 0.963864 - 0.188732 - 0.191203 0.049025 101 mat :

eit90 0.00119007 259.3467 - 0.00844974 248.5939 - 0.09171804 218.7916 - 0.21585975 189.3442 - 0.84414211 38.8344 - 1 0.01 1.11813889 29.7646 1.60980185 156.5985 1.89279768 231.928 2.5689173 419.527 3.3760086 660.323 4.28642053 961.78 122 mat :

lower segment . . . BIPM Pt 100 . . . upper segment

]]>

lower segment Wr T 273.16 B 1 el B i el Wr 16 / (^0.65 - 0.35 / (i 1 -^* i 216 sum + (* 273.15 - :

°C 1 :

upper segment Wr T°C D 1 el D i el Wr 2.64 - (1.64 / (i 1 -^* i 210 sum + :

BIPM low segment eit90 11 el T eit90 21 el T eit90 31 el T eit90 41 el T eit90 51 el T eit90 61 el T eit90 71 el T 71 mat °C 259.3467 - 248.5939 - 218.7917 - 189.3442 - 38.8343 - 0.01 29.7686 71 mat

upper segment eit90 41 el T°C eit90 51 el T°C eit90 61 el T°C eit90 71 el T°C eit90 81 el T°C eit90 91 el T°C eit90 101 el T°C eit90 111 el T°C eit90 121 el T°C 91 mat °C 190.6905 - 38.8348 - 0.01 29.7647 156.5985 231.9281 419.527 660.3231 961.7801 91 mat

https://www.wika.us/upload/DS_IN0031_en_co_65453.pdf