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Mean temperature coefficient between 0 and +100C = 3.85 x 10-3 x K-1 (in accordance with IEC 751,2: 1995-07 resp. DIN EN 60751: 1996-07)
Calculation of resistance values:
Equations acc. To IEC 751,2: 1995-07 resp. DIN EN 60751: 1996-07:
Temperature range from -200 to 0C:
Rt = Ro {1 + At + Bt2 + C(t -100C) t3}
Temperature range from 0 to +850C:
Rt = Ro (1 + At + Bt2)
Where:
A = 3.9083 x 10-3 C-1
B = -5.775 x 10-7C-2
C = -4.183 x 10-12C-4
Rt is the resistance in at temperature t
t is the temperature in C
For nominal resistances 100 at 0C, resistance values from the table are multiplied by the factor:
Ro x 10-2 (Ro = nom. Resistance at 0C). |
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To download the conversion charts please click below: |
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RESISTANCE
VALUES IN OHMS FROM -200C TO 0C |
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RESISTANCE
VALUES IN OHMS FROM 0C TO +400C |
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RESISTANCE
VALUES IN OHMS FROM +400C TO +850C |
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PERMISSIBLE DEVIATIONS FROM THE REFERENCE TABLES |
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The permissible deviations for platinum resistance elements are determined by the following equations (in accordance with IEC 751,2: 1995-07 resp. DIN EN 60751: 1996-07):
Permissible deviation in C = ± (0.15 + 0.002 {t}) for Class A
Permissible deviation in C = ± (0.3 + 0.005 {t}) for Class B
Where {t} is the temperature value in C.
Deviations in C apply to all nominal resistances. Deviations in apply only to 100 .
For nominal resistance values other than 100, the deviation values in must be multiplied by the factor Ro x 10-2
More restricted or wider tolerances can be supplied on special order.
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