Applications – Time Electronics 1041 Resistance Decade Box User Manual
Page 6
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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.