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An RTD forms one arm of a Wheatstone bridge, as shown in picture. The RTD is used to measure a constant temperature, with the bridge operated in a balanced mode. The RTD has a resistance of 25 Ω at a temperature of 0°C, and a thermal coefficient of resistance, α = 0.003925°C-1. The value of the variable resistance R1 must be set to 41.485 Ω to balance the circuit, with the RTD in thermal equilibrium with the measuring environment. jhow to Determine the temperature of the RTD?

An RTD forms one arm of a Wheatstone bridge, as shown in picture. The RTD is used to measure a constant temperature, with the bridge operated in a balanced mode. The RTD has a resistance of 25 Ω at a temperature of 0°C, and a thermal coefficient of resistance, α = 0.003925°C-1. The value of the variable resistance R1 must be set to 41.485 Ω to balance the circuit, with the RTD in thermal equilibrium with the measuring environment. jhow to Determine the temperature of the RTD?

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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An RTD forms one arm of a Wheatstone bridge, as shown in picture.

The RTD is used to measure a constant temperature, with the bridge operated in a balanced mode.

The RTD has a resistance of 25 Ω at a temperature of 0°C, and a thermal coefficient of resistance, α = 0.003925°C-1. The value of the variable resistance R1 must be set to 41.485 Ω to balance the circuit, with the RTD in thermal equilibrium with the measuring environment.

jhow to Determine the temperature of the RTD?

R₂ = R3 = 100 R₁ = 25 92 at 0°C and balanced bridge conditions R₁ R2 R3 RTD tilt Figure 3: Wheatstone bridge G
Transcribed Image Text:R₂ = R3 = 100 R₁ = 25 92 at 0°C and balanced bridge conditions R₁ R2 R3 RTD tilt Figure 3: Wheatstone bridge G
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