An RTD is used in the bridge circuit as shown in Figure 2. The bridge circuit comprises of R? = R? = R3 = 1500 and 15V supply voltage. At 50C the RTD has ? = 0.008/C and outputs resistance, R = 1100. The RTD has a dissipation constant of 30mW/C and a current 12mA flowing through the sensor. If the RTD is placed in bath at 266F, where it solutionspile.com

Question

An RTD is used in the bridge circuit as shown in Figure 2. The bridge circuit comprises
of R? = R? = R3 = 1500 and 15V supply

Power
supply
Differential
amplifier
Offset
output
Compensation lines
3
RTD
Figure 2: RTD sensor circuit for measuring tempera

An RTD is used in the bridge circuit as shown in Figure 2. The bridge circuit comprises of R? = R? = R3 = 1500 and 15V supply voltage. At 50°C the RTD has ? = 0.008/°C and outputs resistance, R = 1100. The RTD has a dissipation constant of 30mW/°C and a current 12mA flowing through the sensor. If the RTD is placed in bath at 266°F, where it has the temperature change from 122°F to 266°F, Calculate the following. i. Resistance of the RTD considering no power dissipation. ii. Resistance of the RTD considering the power dissipation. Power supply Differential amplifier Offset output Compensation lines 3 RTD Figure 2: RTD sensor circuit for measuring temperature.

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