PT-100 RTD Resistance vs Temperature (-200 to 650 ℃)
Ω
°C
Equation for ASTM 1137 and IEC 60751
Range
Callendar-Van Dusen Equation
-200 ℃ ≤ t ≤ 0 ℃
R
t
= R
0
[1+At+Bt
2
+C(t-100)T
3
]
0 ℃ ≤ t ≤ 650 ℃
R
t
= R
0
[1 + At + Bt
2
]
ASTM 1137 and IEC 60751 coefficient values
A = 3.9083 x 10
-3
B = -5.775 x 10
-7
C = -4.183 x 10
-12