please explain a Thermocouple used in a process system ?
please explain a Thermocouple used in a process system ?
Homework Answers
a K-type thermocouple is placed in an oven and connected to a computer DAQ system. The...
a K-type thermocouple is placed in an oven and connected to a computer DAQ system. The junction box temperature is independently measured to be 25 degC. the thermocouple voltage is found to be 35 mV. what is the temperature of the oven?
Problem 2 (25 pts.) A thermocouple is to be used with a 16 bit A/D converter...
Problem 2 (25 pts.) A thermocouple is to be used with a 16 bit A/D converter that has an input range of ov to sv. The voltage output of the thermocouple varies linearly with the temperature over the temperature range of 50°C to 70°C; the corresponding voltages at these temperatures are 2.585 mV and 3.649 mV respectively. Parta) 5 pts. Compute the quantization error of the A/D convertor and the temperature resolution for the entire system. Part b) 10 pts....
A thermocouple is used to measure the temperature of hot air flowing in a duct whose...
A thermocouple is used to measure the temperature of hot air flowing in a duct whose walls are maintained at Tw = 500 K. The thermocouple shows a temperature reading of Tt h = 850 K. Assuming the emissivity of the thermocouple junction to be 0.6, and the convection heat transfer coefficient to be 60 W/m2 · K, (a) draw the thermal resistance network, and (b) determine the actual temperature of the air.
6. Explain the diagram below. eeform Chat Weselom Chart 7. Obtain the sensitivity of thermocouple...
Answer both questions
6. Explain the diagram below. eeform Chat Weselom Chart 7. Obtain the sensitivity of thermocouple that we used from the given graph Thermocouple Potential vs Temperature 70 Type E TypeJ 60 _ Type N Type R Types -TypeT 30 10 10 00-200-100 100 200 300 400 500 600 700 800800 1000 1100 1200 1300 1400 1500 1600 1700 1800 www.osis indutrisbdid-syrtens Temper aturer
6. Explain the diagram below. eeform Chat Weselom Chart 7. Obtain the sensitivity of...
Describe how a thermocouple can be used to measure the temperature of an object.
Describe how a thermocouple can be used to measure the temperature of an object.
Solve the differential equation analytically Suppose a thermocouple is to be used to measure the temperature of a hot gas flowing through a duct. The thermocouple junction is initially at ambient tem...
Solve the differential equation analytically
Suppose a thermocouple is to be used to measure the temperature of a hot gas flowing through a duct. The thermocouple junction is initially at ambient temperature Ti-25°C before it is inserted into the gas stream. Hot duct wall Tsur 400°C Gas stream Junction, Tt) 1,-25°C, D p 8500 kg/m3 T 200°C 0.7 mm 400 Jkg.K Approximating the thermocouple junction as a sphere and using the lumped capacitance model, an energy balance on the thermocouple...
4) Consider the schematic diagram of a thermowell/thermocouple which is used to measure temperature (T) of...
4) Consider the schematic diagram of a thermowell/thermocouple which is used to measure temperature (T) of a fluid. The measured temperature Tm is recorded via thermocouple leads. The energy balance equation is given below. T. mc = UAT-T...) dt Here, m is the mass of the fluid in the thermowell, C is the specific heat, U is the heat transfer coefficient and A is the area of the thermowell wall. Page 2 of 2 (a) Derive the transfer function between...
Problem 1: 1st order system response to step input (5 pts) A thermocouple is exposed to...
Problem 1: 1st order system response to step input (5 pts) A thermocouple is exposed to a step change in temperature from 30°C to 90°C. The recorded thermocouple data is shown in the table below. Given that the response of a thermocouple follows the 1st-order system model. Find out the expression for the output temperature Temperature C 30.0 43.2 53.6 61.6 67.9 72.8 76.6 81.8 90.0 90.0 90.0 Time (S 0.5 2.5 4 10 20 30
Problem 3 A portable thermocouple is used to measure the air temperature inside of a sauna....
Problem 3 A portable thermocouple is used to measure the air temperature inside of a sauna. The sauna is unbearably hot and a person can only stay for 20 seconds, during which the temperature reading keeps on changing and a steady temperature is not reached. Leaving the thermocouple reader in the sauna for extended period of time has been deemed too risky for an electronics device Fortunately, a transient heat transfer model can be used to extract the temperature in...
A thermocouple at 20 °C is suddenly placed into a 60 °C water bath. The thermocouple...
A thermocouple at 20 °C is suddenly placed into a 60 °C water bath. The thermocouple is covered by a brass sphere that is 10 mm in diameter. The density of brass is 8500 kg/m3 and the specific heat is 0.385 kJ/kg-°C. The heat transfer coefficient is determined to be 1900 W/m2 °C. For the same system as the previous question, determine the 90% rise time. For the same system, calculate the time it would take to reach 40 °C.
Problem 2 (25 pts.) A thermocouple is to be used with a 16 bit A/D converter that has an input range of ov to sv. The voltage output of the thermocouple varies linearly with the temperature over the temperature range of 50°C to 70°C; the corresponding voltages at these temperatures are 2.585 mV and 3.649 mV respectively. Parta) 5 pts. Compute the quantization error of the A/D convertor and the temperature resolution for the entire system. Part b) 10 pts....
Answer both questions
6. Explain the diagram below. eeform Chat Weselom Chart 7. Obtain the sensitivity of thermocouple that we used from the given graph Thermocouple Potential vs Temperature 70 Type E TypeJ 60 _ Type N Type R Types -TypeT 30 10 10 00-200-100 100 200 300 400 500 600 700 800800 1000 1100 1200 1300 1400 1500 1600 1700 1800 www.osis indutrisbdid-syrtens Temper aturer
6. Explain the diagram below. eeform Chat Weselom Chart 7. Obtain the sensitivity of...
Describe how a thermocouple can be used to measure the temperature of an object.
Solve the differential equation analytically
Suppose a thermocouple is to be used to measure the temperature of a hot gas flowing through a duct. The thermocouple junction is initially at ambient temperature Ti-25°C before it is inserted into the gas stream. Hot duct wall Tsur 400°C Gas stream Junction, Tt) 1,-25°C, D p 8500 kg/m3 T 200°C 0.7 mm 400 Jkg.K Approximating the thermocouple junction as a sphere and using the lumped capacitance model, an energy balance on the thermocouple...
4) Consider the schematic diagram of a thermowell/thermocouple which is used to measure temperature (T) of a fluid. The measured temperature Tm is recorded via thermocouple leads. The energy balance equation is given below. T. mc = UAT-T...) dt Here, m is the mass of the fluid in the thermowell, C is the specific heat, U is the heat transfer coefficient and A is the area of the thermowell wall. Page 2 of 2 (a) Derive the transfer function between...
Problem 1: 1st order system response to step input (5 pts) A thermocouple is exposed to a step change in temperature from 30°C to 90°C. The recorded thermocouple data is shown in the table below. Given that the response of a thermocouple follows the 1st-order system model. Find out the expression for the output temperature Temperature C 30.0 43.2 53.6 61.6 67.9 72.8 76.6 81.8 90.0 90.0 90.0 Time (S 0.5 2.5 4 10 20 30
Problem 3 A portable thermocouple is used to measure the air temperature inside of a sauna. The sauna is unbearably hot and a person can only stay for 20 seconds, during which the temperature reading keeps on changing and a steady temperature is not reached. Leaving the thermocouple reader in the sauna for extended period of time has been deemed too risky for an electronics device Fortunately, a transient heat transfer model can be used to extract the temperature in...
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