Pt100 Platinum Resistance Thermometer
Pt100 electrical resistance temperature sensor - ranging -220 to 750 degrees Celsius.
The PT100 has a resistance of 100 ohms at 0 °C and 138.5 ohms at 100 °C.
Temperature (oC) | Electrical Resistance (Ω) |
---|---|
-220 | 10.41 |
-200 | 18.53 |
-180 | 27.05 |
-160 | 35.48 |
-140 | 43.80 |
-120 | 52.04 |
-100 | 60.20 |
-80 | 68.28 |
-60 | 76.28 |
-40 | 84.21 |
-30 | 88.17 |
-20 | 92.13 |
-10 | 96.07 |
0 | 100.00 |
10 | 103.90 |
20 | 107.79 |
30 | 111.67 |
40 | 115.54 |
50 | 119.40 |
60 | 123.24 |
80 | 130.89 |
100 | 138.50 |
120 | 146.06 |
140 | 153.57 |
160 | 161.04 |
180 | 168.47 |
200 | 175.84 |
220 | 183.17 |
240 | 190.46 |
260 | 197.70 |
280 | 204.88 |
300 | 212.03 |
320 | 219.13 |
340 | 226.18 |
360 | 233.19 |
380 | 240.15 |
400 | 247.06 |
420 | 253.93 |
440 | 260.75 |
460 | 267.52 |
480 | 274.25 |
500 | 280.93 |
520 | 287.57 |
540 | 294.16 |
560 | 300.70 |
580 | 307.20 |
600 | 313.65 |
620 | 320.05 |
640 | 326.41 |
660 | 332.72 |
700 | 345.21 |
750 | 360.55 |
Note! - there are also PT1000 sensors with resistance 1000 ohms at 0 °C.
The linearization equation for the Pt100 thermometer is
Rt = R0 (1 + A t + B t2 + C (t - 100) t3) (1)
where
Rt = resistance at temperature t (ohm)
R0 = resistance at temperature 0oC (ohm)
t = temperature (oC)
A = 3.9083 10–3
B = –5.775 10–7
C = –4.183 10–12 (for temperatures below 0oC)
C = 0 (for temperatures above 0 °C)