1- Obtain manufacturers data on thermocouple and thermistor temperature sensors for measuring temperatures of hot combustion gases from a furnace. Explain the basic operating principles of each sensor and compare the advantages and disadvantages of each device. Consider sensitivity, accuracy, calibration, and cost.
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- The output of a potentiometer is to be read by a recorder of 10,000 ohms input resistance. Nonlinearity must be held to 1 percent. A family of potentiometers having a thermal rating of 5 watts and resistances ranging from 100 to 10,000 ohms in 100- ohm steps is available. Choose from this family the potentiometer that has the greatest possible sensitivity and also meets the other requirements. What is this sensitivity if the potentiometers are single-turn (360°) units?What are the types of temperature sensors / devices used in industrial applications? (Give atleast 5 thermocouple sensors).1.Identify a mechatronics system being used by you in your daily routine. Analyze its elements andstate its importance in the functioning of that system.2. Define sensors and list the various specifications that need to be carefully studied before using aThermocouple for reading the temperature of a furnace.3. Explain the significance of the following information given in the specification of the followingtransducer,Thermocouple Sensitivity: nickel chromium/nickel aluminum thermocouple: 0.039 mV/ºC when thecold junction is at 0 ºC.
- 3. Microfluidic channels will need to be fabricated on a key micro-scale sensor used by aerospace industries. Before running machining tests and analyzing machined quality, preliminary efforts are needed to evaluate selected materials and factors affecting machining process¹. Three material candidates have been selected, including 422SS (stainless steel), IN718 (nickel alloy), and Ti64 (titanium alloy) with their measured tensile properties and equation of true stress-true strain relationship used listed below. Tref25°C. Specifically, three factors will need to be evaluated, including different materials, temperature, and size effect. Please calculate true stress values for true strain ranging between 0-3 for each case listed below. Material A (MPa) & (S-¹) Tm (°C) 870 0.01 1520 422SS (Peyre et al., 2007) IN718 (Kobayashi et al., 2008) Ti64 (Umbrello, 2008) 980 1 1300 782.7 1E-5 1660 Material 422SS (CINDAS, 2011) IN718 (Davis, 1997) Ti64 (Fukuhara and Sanpei, 1993) 0 = X G (GPa) 1+ B…RTD calibration How do you determine the error in temperature measurement?Discuss the importance of measuring devices for Electric Motor and Internal Combustion Engine in terms of accuracy.
- What is an example of experimental uncertainty?Using the colored bands on the two resistors at your table, you determine that the two resistances of the resistors are 200 ohms with 5% tolerance and 100 ohms with a 20% tolerance. What would you expect the equivalent resistance of the two resistors to be (including the uncertainty) if they are connected in series? ) ohms ± CheckA thermocouple produces an e.m.f. in mV according to the temperature difference between the sensor tip 0, and the reference junction 02 (also called gauge head where the reference junction is embedded inside the display unit for the thermocouple) such that e = a(0, – 0,) + B(e; – e; ) a = 3.5x10? mv/deg and B = 8.2x106 mV/deg. The gauge head is at 20°C. The output is 10 mV. Calculate the temperature of the sensor.
- On the drawing attached, before any geometric controls are applied, what is the coaxility tolerance is implied between the diamters?QUESTION 2 Thermocouples are devices used to measure temperature of a given sample or the surrounding medium. These devices feature a "bead", which has a spherical shape, and produces voltage upon change in temperature. For an engineering application at a pharmaceutical company, thermocouple devices are being tested for their responsiveness, i.e. how fast it can detect temperature changes in the environment (surrounding air). The engineers at this company have specified design constraints for an ideal thermocouple: it must detect temperature changes no later than 1.5 minute, and the reported temperature value must be reasonably correct: at most %3 difference between measured and actual temperature values is allowed. Four thermocouples from different vendors are being tested. Relevant properties of these devices are listed below: Thermal conductivity Density 36 W/m*K 36 W/m*K 42 W/m*K 33 W/m*K Specific Heat 140 kJ/kg*K 120 kJ/kg*K 150 kJ/kg*K 160 kJ/kg*K Device Bead Diameter…A thermocouple has an output emf as shown in the following table when its hot (measuring) junction is at the temperatures shown. Determine the sensitivity of measurement for the thermocouple in mv/"C. Temperature (C) 3.5 13 4 12 Voltage imv) Sensitivity, S