3.17 Extension of thermocouple wires. A K-type thermocouple measures tempera- ture T₁ and has reference T as shown in Figure 3.33. Calculate the reading of the voltmeter under the following conditions: a. T₁ = 100°C, Tr = 0°C, and the extension section is absent. The y-y' junctions are in a temperature zone. (c = chromel, a = alumel). The extension section is not present (i.e., x and w are the same point and x' and y' are the same point). b. T₁ = 100°C, T₁ = 0°C, and the extension section is present with the alumel wire on top and the chromel wire on the bottom. The junctions x-x', y-y', and z-z' are each in their own temperature zones, all three at 25°C. The junction w is at 20°C. Calculate the error in the reading of temperature T₁. c. In an attempt to reduce the error, the extension is flipped so that now the chromel wire is on top and the alumel wire is on the bottom. Does that resolve the issue? X с a (c) W Extension a a (1) y Z Copper T3 с Z' Copper