Question

Temperature Mensurements: A typical instrumestation system for tem TD is shown in Figure 1 temperature measurements wag aa Figure 1: The instrumentation of a RTD thermometry (a) Briety explain the reason for incorporatinga Wheatstone bridge in the Instrumetation. What i the purpose of using resistors Ry and Re in this instrumentation? (10 pt) (b) What is the function of the resistor R and capacitor C, in this instrumentation? (5 pta) (e) The bridge is excited by 5V and perfectly balanced at or C, and the amplißer has a gain, G, of 20 375 x 10-3ro, and the amplifier output voltage indiates is a 100Ω platinum with If the RTD is a 10012 platinum with a -375 x 10 pC, and the amplitier outpat voltage indicates out 9.375V what is the temperature of the RTD. (10 pts)

Answer 1

B.Rs resistance is used in this instrument is reference.The bridge consists 4 resistor.The sum of upper left arm resistance and lower rugriarm residential is equal to sum of upper right arm resistance and lower left arm resistance.Three resistance value are known and remaining one is unknown. The variation in measuring quantity shows in resistance and converted desired form.