Advance iron thermo-couple 

 Current goes from advance t 

 tions (e) and (g) at 0. S = 

 volts per mm 



(fig. 10). Resistance, .734 ohms. 



,0 iron in the hot junction. Jurc- 



6000 ohms. So (d) = .00006177 



0.0 



17.0 



19.8 



22.0 



87.7 



111.0 



137.0 



159.2 



188.7 



210.0 



229.1 



246.5 



265.4 



280.6 



291.0 



297.0 



0.0 

 12.6 

 14.1 

 16.3 

 65.6 

 80.6 

 108.5 

 127.7 

 155.8 

 175.7 



.000000 

 .000780 

 .000872 

 .001008 

 .004050 

 .004970 

 .006680 

 .007890 

 .009610 

 .0106SU 



From^;^^^ = 1375 + 18769c 



=. .01616 

 h = -6.4 X 10-*^ 

 c = 40.42 X 10-^ 



= .03333 and E^'-^ =2976 + 88209c 



Fig. 12. 



Upper curve-Nickel-Lead Junction. Lower curve-Iron-Lead Junction. 



