SIST EN 60751:1998/A2:1998

SLOVENSKI STANDARD
SIST EN 60751:1998/A2:1998
01-november-1998
Industrial platinum resistance thermometer sensors - Amendment A2 (IEC
60751:1983/A2:1995)
Industrial platinum resistance thermometer sensors
Industrielle Platin-Widerstandsthermometer und Platin-Meßwiderstände
Capteurs industriels à résistance thermométrique de platine
Ta slovenski standard je istoveten z: EN 60751:1995/A2:1995
ICS:
17.200.20 Instrumenti za merjenje Temperature-measuring
temperature instruments
SIST EN 60751:1998/A2:1998 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 60751:1998/A2:1998

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SIST EN 60751:1998/A2:1998

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SIST EN 60751:1998/A2:1998

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SIST EN 60751:1998/A2:1998
CEI
NORME
INTERNATIONALE IEC
751
INTERNATIONAL

1983
STANDARD
AMENDEMENT 2
AMENDMENT 2
1995-07
Amendement 2
Capteurs industriels à résistance thermométrique
de platine
Amendment 2
Industrial platinum resistance thermometer
sensors
© CEI 1995 Droits de reproduction réservés — Copyright — all rights reserved
Genève, Suisse
Bureau Central de la Commission Electrotechnique Internationale 3, rue de Varembé
Commission Electrotechnique Internationale CODE P RIX
D
International Electrotechnical Commission PRICE CODE
IEC Me *tj yuapomae 3neKTpoTeXHH4ecKaA
HOMHCCHA
vigueur
Pour prix, voir catalogue en
•
For price, see current catalogue

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SIST EN 60751:1998/A2:1998
751 Amend. 2 © IEC:1995 - 3 -
FOREWORD
This amendment has been prepared by sub-committee 65B: Devices, of IEC technical
committee 65: Industrial-process measurement and control.
The text of this amendment is based on the following documents:
DIS Report on voting
65B/224/DIS 65 B/XX/RVD
Full information on the voting for the approval of this amendment can be found in the
repo rt on voting indicated in the above table.
Page 9
3.1 Temperature/resistance relationships
Replace the existing text of this subclause by the following:
The temperature/resistance relationships used in this standard are as follows:
- for the range -200 °C to 0 °C:
Rt = Ro [1 + At + Bt2 + C(t -100 °C) t3]
- for the range of 0 °C to 850 °C:
Rt = R0 (1 + At+ Bt2)
For the quality of platinum commonly used for industrial resistance thermometers, the
values of the constants in these equations are:
A = 3,9083 x 10-3 °C-1
B = -5,775 x 10-7 °C-2
C = -4,183 x 10
- 12 °C-4
For resistance thermometers satisfying the above relationships, the temperature coeffi-
cient a, defined as:
a - (8100 - R0) has the value 0,003 85 °C-1
100 x R0
where
is the resistance at 100 °C;
100
R0 is the resistance at 0 °C.
(For calculation purposes, use the exact value of 0,003 850 55 °C-'.)

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SIST EN 60751:1998/A2:1998
751 Amend.2©IEC:1995 – 5 –
These equations are listed as the basis for the temperature/resistance tables of this
standard and are not intended to be used for the calibration of individual thermometers.
Values of temperature in this standard are on the International Temperature Scale of 1990
(ITS-90).
NOTE — Unless specified by the manufacturer, the resistance values defined by the above equations do
not include resistance of the leads between the sensing resistor and the terminations.
Pages 12 and 13
Delete the existing table 1 and replace it by the following:

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SIST EN 60751:1998/A2:1998
751 amend. 2 ©CEI :1995
- 6 -
Table 1 - Temperature/resistance
Tableau 1 - Relation température/résistance
relationship
R(0) = 100,00 S2
°c oC
EIT-90 0 1 3 4 5 6 7 8 9 10 ITS-90
2
-200 18,52 -200
22,83 22,40 20,68 20,25 19,82
-190 21,97 21,54 21,11 19,38 18,95 18,52 -190
-180 27,10 26,67 26,24 25,82 25,39 24,97 24,54 24,11 23,68 23,25 22,83 -180
-170 31,34 30,91 30,49 30,07 29,64 29,22 28,80 28,37 27,95 27,52 27,10 -170
-160 35,54 35,12 34,70 34,28 33,86 33,44 33,02 32,60 32,18 31,76 31,34 -160
-150 39,72 39,31 38,89 38,47 38,05 37,64 37,22 36,80 36,38 35,96 35,54 -150
-140 43,88 43,46 43,05 42,63 42,22 41,80 41,39 40,97 40,56 40,14 39,72 -140
-130 48,00 47,59 47,18 46,77 46,36 45,94 45,53 45,12 44,70 44,29 43,88 -130
-120 52,11 51,70 51,29 50,88 50,47 50,06 49,65 49,24 48,83 48,42 48,00 -120
-110 56,19 55,79 55,38 54,97 54,56 53,75 53,34
54,15 52,93 52,52 52,11 -110
-100 60,26 59,85 59,44 59,04 58,63 58,23 57,82 57,41 57,01 56,60 56,19 -100
-90 64,30 63,90 63,49 63,09 62,68 62,28 61,88 61,47 61,07 60,66 60,26 -90
67,92 67,52 66,72 66,31 65,91 65,51 65,11 64,70 64,30
-80 68,33 67,12 -80
-70 72,33 71,93 71,53 71,13 70,73 70,33 69,93 69,53 69,13 68,73 68,33 -70
-60 76,33 75,93 75,53 75,13 74,73 74,33 73,93 73,53 73,13 72,73 72,33 -60
-50 80,31 79,91 79,51 79,11 78,72 78,32 77,92 77,52 77,12 76,73 76,33 -50
-40 84,27 83,87 83,48 83,08 82,69 82,29 81,89 81,50 81,10 80,70 80,31 -40
-30 88,22 87,83 87,43 87,04 86,64 86,25 85,85 85,46 85,06 84,67 84,27 -30
-20 92,16 91,77 91,37 90,98 90,59 90,19 89,80 89,40 89,01 88,62 88,22 -20
-10 95,69 95,30 94,91 93,73 93,34 -10
96,09 94,52 94,12 92,95 92,55 92,16
0 100,00 99,61 99,22 98,83 98,44 98,04 97,65 97,26 96,87 96,48 96,09 0
0 0
100,00 100,39 100,78 101,17 101,56 101,95 102,34 102,73 103,12 103,51 103,90
10 103,90 104,29 104,68 105,07 105,46 105,85 106,24 106,63 107,02 107,40 107,79 10
20 107,79 108,18 108,57 108,96 109,35 109,73 110,12 110,51 110,90 111,29 111,67 20
30 111,67 112,06 112,45 112,83 113,22 113,61 114,00 114,38 114,77 115,15 115,54 30
40 115,54 115,93 116,31 116,70 117,08 117,47 117,86 118,24 118,63 119,01 119,40 40
50 119,40 119,78 120,17 120,55 120,94 121,32 121,71 122,09 122,47 122,86 123,24 50
60 123,24 123,63 124,01 124,39 124,78 125,16 125,54 125,93 126,31 126,69 127,08 60
129,75 70
70 127,08 127,46 127,84 128,22 128,61 128,99 129,37 130,13 130,52 130,90
80 130,90 131,28 131,66 132,04 132,42 132,80 133,18 133,57 133,95 134,33 134,71 80
137,37
90 134,71 135,09 135,47 135,85 136,23 136,61 136,99 137,75 138,13 138,51 90
100 138,51 138,88 139,26 139,64 140,02 140,40 140,78 141,16 141,54 141,91 142,29 100
110 142,29 143,05 143,43 143,80 144,18 144,56 144,94 145,31 145,69 146,07 110
142,67
120 146,07 146,44 146,82 147,20 147,57 147,95 148,33 148,7
...