A New Thermo-Electric Fluid-Meter And Hot-Wire Anemometer
The book A New Thermo-Electric Fluid-Meter And Hot-Wire Anemometer was written by author Seyferlich, Walter M Here you can read free online of A New Thermo-Electric Fluid-Meter And Hot-Wire Anemometer book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is A New Thermo-Electric Fluid-Meter And Hot-Wire Anemometer a good or bad book?
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A long-scale galvanometer, in con- nection with a suitable shunt, is used as a deflection instrument for setting the current in the potentiometer circuit. After setting the current, the same galvanometer is used as a null instrument for balancing the thermocouple e. m, f, against the potentiometer. The chief objection to this practice is the fact that it necessitates the use of a very- high-grade galvanometer. A long-scale galvanometer, suitable for use as a deflection instrument, is necessaril...y much more costly and more delicate than a short-scale instrument of the same sensitivity. For this reason it is desirable to provide a means for setting the current which will not only eliminate the standard cell but will also remove the necessity for a high-grade deflection instrument. Though the Hoxie Thermoelectric cell about to be described is not, strictly speaking, a primary standard or source of e. m. f., as is the ^>€ T0'^ trr 207 Clark or Weston cell, it is at least free from the above drawbacks.
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