Time Electronics 1041 Resistance Decade Box - Manual (Page 6)

5
1041 Technical Manual 5
4.
Applications
PT100 Resistance Simulation
Accurate simulation of low ohm values, such as P.R.T, can be performed by using the 1041
Resistance vs Temperature Relationship for Platinum Resistance Thermometer Detector Element (ITS-90)
°C
Ω
°C
Ω
°C
Ω
°C
Ω
-200 18.52 60 123.24 320 219.15 580 307.25
-180 27.10 80 130.90 340 226.21 600 313.71
-160 35.54 100 138.51 360 233.21 620 320.12
-140 43.88 120 146.07 380 240.18 640 326.48
-120 52.11 140 153.58 400 247.09 660 332.79
-100 60.26 160 161.05 420 253.96 680 339.06
-80 68.33 180 168.48 440 260.78 700 345.28
-60 76.33 200 175.86 460 267.56 720 351.46
-40 84.27 220 183.19 480 274.29 740 357.59
-20 92.16 240 190.47 500 280.98 760 363.67
0 100.00 260 197.71 520 287.62 780 369.71
20 107.79 280 204.90 540 294.21 800 375.70
40 115.54 300 212.05 560 300.75 820 381.65
Using this technique, the current passed through to resistor can be limited to a known value,
and lead resistance does not effect the accuracy of the readings.