Resistance Temperature Detector (RTD) Questions
Calculate the voltage across the bridge (VAB) at the following RTD temperatures, assuming a 604 Ω nickel-iron RTD with an alpha value of 0.00518:
- T = 0 oC ; VAB = _____ millivolts
- T = 81 oC ; VAB = _____ millivolts
- T = -45 oC ; VAB = _____ millivolts
- T = 320 oF ; VAB = _____ millivolts
Answer :
All answers shown here based on tabulated values for the RTD’s resistance (rather than values calculated by formula):
- T = 0 oC ; VAB = -0.6989 millivolts
- T = 81 oC ; VAB = 0.9568 millivolts
- T = -45 oC ; VAB = -1.6215 millivolts
- T = 320 oF ; VAB = 2.4831 millivolts
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