Reference Table for Pt RTD Elements
°C omega.gif (98 bytes)
°C omega.gif (98 bytes)
°C omega.gif (98 bytes)
-200
-190
-180
-170
-160
-150
-140
-130
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
+10
+20
+30
+40
+50
+60
+70
+80
+90
+100
+110
+120
+130
+140		 18.52
22.83
27.10
31.34
35.34
39.72
43.88
48.00
52.11
56.19
60.26
64.30
68.33
72.33
76.33
80.31
84.27
88.22
92.16
96.09
100.00
103.90
107.79
111.67
115.54
119.40
123.24
127.08
130.90
134.71
138.51
142.29
146.07
149.83
153.58
+150
+160
+170
+180
+190
+200
+210
+220
+230
+240
+250
+260
+270
+280
+290
+300
+310
+320
+330
+340
+350
+360
+370
+380
+390
+400
+410
+420
+430
+440
+450
+460
+470
+480
+490		 157.33
161.05
164.77
168.48
172.17
175.86
179.53
183.19
186.84
190.47
194.10
197.71
201.31
204.90
208.48
212.05
215.61
219.15
222.68
226.21
229.72
233.21
236.70
240.18
243.64
247.09
250.53
253.96
257.38
260.78
264.18
267.56
270.93
274.29
277.64
+500
+510
+520
+530
+540
+550
+560
+570
+580
+590
+600		 280.98
284.30
287.62
290.92
294.21
297.49
300.75
304.01
307.25
310.49
313.71

 

 

Reference
Tables are
available in
5°C & 1°C
increments
upon
request.

 

 

 

Nominal Resistance: 100 ohms @ °C

For Nominal resistance values other than 100 omega.gif (98 bytes) @ °C resistance
values from the table are corrected using the equation R0 X10-2 where R0 = nominal resistance at 0°C.

The permissible deviations for platinum resistance elements are determined by the following equations (in accordance with IEC 751,2: 1995- 07 [DIN EN 60751: 1996-07]):

Tolerance - B Class = ± 0.3˚C at nominal resistance (0˚C)
Tolerance - A Class = ± 0.15˚C at nominal resistance (0˚C)
Tolerance - 1/3 DIN Class B = ± 0.1˚C at nom. resistance (0˚C)
Tolerance
Temp
Deg. C		 Class A Class B
omega.gif (98 bytes) °C omega.gif (98 bytes) °C
-200
-100
0
100
200
300
400
500
600
650
700
800
850		 ±0.24
±0.14
±0.06
±0.13
±0.20
±0.27
±0.33
±0.38
±0.43
±0.46
 ±0.55
±0.35
±0.15
±0.35
±0.55
±0.75
±0.95
±1.15
±1.35
±1.45		 ±0.56
±0.32
±0.12
±0.30
±0.48
±0.64
±0.79
±0.93
±1.06
±1.13
±1.17
±1.28
±1.34		 ±1.3
±0.8
±0.3
±0.8
±1.3
±1.8
±2.3
±2.8
±3.3
±3.6
±3.8
±4.3
±4.6

tchart.gif (5132 bytes)
  • Mean temperature coefficient between 0 and 100°C = 3.85 x 10-3 x K-1 (in accordance with IEC 751,2:1995-07 [DIN EN 60751;1996-07])
  • Calculation of Resistance values:
    Equations acc. to IEC 751,2: 1995-07 (DIN EN 60751: 1996-07)
    Temperature range from -200 to 0°C:
    R† + R0 (1 +A† +B†2 + C(† - 100°C) †3]
    Temperature range from 0 to +850°C:
    R† + R0 (1 + A† + B†2)
    Where: A = 3.9083 x 10-3°C-1; B=-5.775 x 10-7 °C-2; C=-4.183 x 10-12 °C-4
    R† is the resistance in omega.gif (98 bytes) at temperature †
    † is the temperature t in °C
  • Resistance values from -200 to -250°C were obtained by  fixed point measurement