Pt100 resistance table and calculator

The resistance of a platinum sensor rises with temperature: 100 Ω at 0 °C for a Pt100. Disconnect the sensor, measure between terminals A and B and compare with the table. An open circuit or a large difference means a faulty element or wiring.

Result

Class B tolerance± 0.70 °C (130.63–131.16 Ω)

How it is calculated

Callendar–Van Dusen equation (IEC 60751, α = 0.00385): R = R₀(1 + A·t + B·t²) above 0 °C, plus C·(t − 100)·t³ below 0 °C; A = 3.9083·10⁻³, B = −5.775·10⁻⁷, C = −4.183·10⁻¹². Class B: ±(0.3 + 0.005·|t|) °C.

Reference only. The maker's manual and class rules take priority.

Reference table

°C	Pt100, Ω	Pt1000, Ω
-50	80.31	803.1
-40	84.27	842.7
-30	88.22	882.2
-20	92.16	921.6
-10	96.09	960.9
0	100.00	1 000.0
10	103.90	1 039.0
20	107.79	1 077.9
30	111.67	1 116.7
40	115.54	1 155.4
50	119.40	1 194.0
60	123.24	1 232.4
70	127.08	1 270.8
80	130.90	1 309.0
90	134.71	1 347.1
100	138.51	1 385.1
110	142.29	1 422.9
120	146.07	1 460.7
130	149.83	1 498.3
140	153.58	1 535.8
150	157.33	1 573.3
160	161.05	1 610.5
170	164.77	1 647.7
180	168.48	1 684.8
190	172.17	1 721.7
200	175.86	1 758.6
210	179.53	1 795.3
220	183.19	1 831.9
230	186.84	1 868.4
240	190.47	1 904.7
250	194.10	1 941.0
260	197.71	1 977.1
270	201.31	2 013.1
280	204.90	2 049.0
290	208.48	2 084.8
300	212.05	2 120.5
310	215.61	2 156.1
320	219.15	2 191.5
330	222.68	2 226.8
340	226.21	2 262.1
350	229.72	2 297.2
360	233.21	2 332.1
370	236.70	2 367.0
380	240.18	2 401.8
390	243.64	2 436.4
400	247.09	2 470.9

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