A) The circuit of the thermocouple made of iron and Constantan is shown in Figure 4. If the base connection is inside the ice container 0 °C and the output voltage of the thermocouple is 2.1mV, obtain the connection point temperature. B) If in the thermocouple circuit discussed in section A (shown in Figure 5), ice is melted in the container in which the base connection is located, so that it turns into water with a temperature of 25°C and the connection related to the temperature measurement in Remained the same temperature, what is the output voltage of the thermocouple? Iron Constantan Iron Potentiometer Measuring junction

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S4) just Solve A

A) The circuit of the thermocouple made of iron and Constantan is shown in Figure 4.
If the base connection is inside the ice container 0 °C and the output voltage of the thermocouple is
2.1mV, obtain the connection point temperature.
B) If in the thermocouple circuit discussed in section A (shown in Figure 5), ice is melted in the
container in which the base connection is located, so that it turns into water with a temperature of
25°C and the connection related to the temperature measurement in Remained the same
temperature, what is the output voltage of the thermocouple?
Iron
Potentiometer
Constantan
Iron
Measuring
junction
Ice bath
Reference
junction
Figure 4 Circuits for a thermocouple made of iron and Constantan.
C) If copper branches are added to the thermocouple circuit according to the figure below. In the case
where the connection of the base inside the ice 0°C
And the output voltage is 2.1 mv, calculate the temperature of the measuring connection.
Iron
Copper
Constantan
Copper
Potentiometer
Measuring
junction
Ice bath
-Reference
junction
Figure 5: Thermocouple circuit made of iron, Constantan and copper.
The thermoelectric sensitivities for constantane, copper and iron in contact with platinum
at 0°C are-35", +6" and +18.5 respectively.
Transcribed Image Text:A) The circuit of the thermocouple made of iron and Constantan is shown in Figure 4. If the base connection is inside the ice container 0 °C and the output voltage of the thermocouple is 2.1mV, obtain the connection point temperature. B) If in the thermocouple circuit discussed in section A (shown in Figure 5), ice is melted in the container in which the base connection is located, so that it turns into water with a temperature of 25°C and the connection related to the temperature measurement in Remained the same temperature, what is the output voltage of the thermocouple? Iron Potentiometer Constantan Iron Measuring junction Ice bath Reference junction Figure 4 Circuits for a thermocouple made of iron and Constantan. C) If copper branches are added to the thermocouple circuit according to the figure below. In the case where the connection of the base inside the ice 0°C And the output voltage is 2.1 mv, calculate the temperature of the measuring connection. Iron Copper Constantan Copper Potentiometer Measuring junction Ice bath -Reference junction Figure 5: Thermocouple circuit made of iron, Constantan and copper. The thermoelectric sensitivities for constantane, copper and iron in contact with platinum at 0°C are-35", +6" and +18.5 respectively.
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