6.3 Thermocouple Calibration Curve Thermocouples are made by joining two dissimilar metal wires. The contact of the two metals results in a small, but measurable, voltage drop across the junction. This voltage drop changes as the temperature of the junction changes. Thus, the thermocouple can be used to measure temperature if you know the relationship between temperature and voltage. Equations for common types of thermocouples are available, or you can simply take a few data points and prepare a calibration curve. This is especially easy for thermocouples, because for small temperature ranges, the relationship between temperature and voltage is nearly linear. 289 Use a linear trendline to find the coefficients of a straight line through the data shown here: 289 Use a linear trendline to find the coefficients of a straight line through the data shown here: T(°C) V (mV) 10 0.397 220 20 0.798 30 1.204 40 1.612 50 2.023 60 2.436 70 2.851 80 3.267 90 3.682 Note: The thermocouple voltage changes because the temperature changes-that is, the voltage depends on the temperature. For regression, the independent variable (temperature) should always be on the x-axis, and the dependent variable (voltage) should be on the y-axis.
6.3 Thermocouple Calibration Curve Thermocouples are made by joining two dissimilar metal wires. The contact of the two metals results in a small, but measurable, voltage drop across the junction. This voltage drop changes as the temperature of the junction changes. Thus, the thermocouple can be used to measure temperature if you know the relationship between temperature and voltage. Equations for common types of thermocouples are available, or you can simply take a few data points and prepare a calibration curve. This is especially easy for thermocouples, because for small temperature ranges, the relationship between temperature and voltage is nearly linear. 289 Use a linear trendline to find the coefficients of a straight line through the data shown here: 289 Use a linear trendline to find the coefficients of a straight line through the data shown here: T(°C) V (mV) 10 0.397 220 20 0.798 30 1.204 40 1.612 50 2.023 60 2.436 70 2.851 80 3.267 90 3.682 Note: The thermocouple voltage changes because the temperature changes-that is, the voltage depends on the temperature. For regression, the independent variable (temperature) should always be on the x-axis, and the dependent variable (voltage) should be on the y-axis.
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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Transcribed Image Text:6.3 Thermocouple Calibration Curve
Thermocouples are made by joining two dissimilar metal wires. The contact of the two metals results in a
small, but measurable, voltage drop across the junction. This voltage drop changes as the temperature of
the junction changes. Thus, the thermocouple can be used to measure temperature if you know the
relationship between temperature and voltage. Equations for common types of thermocouples are available,
or you can simply take a few data points and prepare a calibration curve. This is especially easy for
thermocouples, because for small temperature ranges, the relationship between temperature and voltage is
nearly linear.
289
Use a linear trendline to find the coefficients of a straight line through the data shown here:
Transcribed Image Text:289
Use a linear trendline to find the coefficients of a straight line through the data shown here:
T(°C)
V (mV)
10
0.397
220
20
0.798
30
1.204
40
1.612
50
2.023
60
2.436
70
2.851
80
3.267
90
3.682
Note: The thermocouple voltage changes because the temperature changes-that is, the voltage
depends on the temperature. For regression, the independent variable (temperature) should always
be on the x-axis, and the dependent variable (voltage) should be on the y-axis.
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