5. It is required to design a resistance thermometer (RTD) using a nickel alloy wire of 0.02 mm (1 mark) UTM OUTM (2 marks) a. Calculate the length of the wire should be? UTM diameter. The thermometer...

Extracted text: 5. It is required to design a resistance thermometer (RTD) using a nickel alloy wire of 0.02 mm (1 mark) UTM OUTM (2 marks) a. Calculate the length of the wire should be? UTM diameter. The thermometer resistance at 0°C is to be 100 0. Take for nickel value of resistivity, OUTM 6. A copper - constantan thermocouple was found to have linear calibration between 0°C and 400°C with emf at maximum temperature (reference junction temperature 0°C) equal to UT p, as 8.7 x 106 n cm at 0°C and the temperature coefficient of resistance, a, 0.0068 °C . OUTM UTM OUTM a. Determine the correction which must be made to the indicated emf if the cold OUT b. Determine the value of resistance at steam point. UTM OUTM (1 mark) UTM UTM b. If the indicated emf is 8.92 mV in the thermocouple circuit, determine the temperature of the hot junction. (The cold junction temperature is 25°C). OUTM UTN 20.68mV. UTM junction temperature is 25°C. (2 marks) UTM UTM UTM UTM OUTM OUTM UTM