Temperature Measurement Chapter 4 58 4.5a 4.5b IT02 Curriculum Manual Enter the total change in the resistance of the RTD Transducer over the temperature range 20-50°C in 2. Is the resistance/temperature characteristic linear? Yes or No 4.5c Enter your estimated (extrapolated) resistance of the RTD Transducer from the graph at 0°C. During the exercise, the current flowing was of the order of ImA. Since the applied voltage was +5V, the total circuit resistance was therefore of the order of Sk (which you can see from the setting of the 10k2 slider resistor). The variation of resistance of the RTD Transducer therefore had little effect on the circuit current and hence the voltage drop across it represented the resistance value reasonably accurately. The current of ImA in the RTD represents a very low power dissipation in the RTD. The self-heating effect would produce a temperature rise of 0.02°C. Calculate the power dissipation in the RTD Transducer at a temperature of 50°C when the standard circuit current of ImA flows in it. Power dissipation in the RTD Transducer - W 4.5d 4.5e Enter your calculated value of the power dissipated in the RTD Transducer in μW. A platinum RTD Transducer has resistance of 1000 at 0°C and 1380 at 100°C. Its resistance at 50°C will be: 4.5f 119°C b138°C 150°C 188°C A platinum RTD Transducer has resistance of 100 12 at 0°C and 138 2 at 100°C. The temperature when its resistance is 115.2 12 will be: a5.78°C 15.2°C 30.4°C 40°C LJ Technical Systems