ately before taking a cer-tain reading, and (2) when the initial source sighted upon was ata lower temperature. 3. LENS AND THERMOCOUPLE PYROMETER (FERY LENS THERMO-ELECTRIC PYROMETER) Fig. 10 illustrates the construction of the laboratory type ofFery lens pyrometer. The image of the furnace is… … Fig. 10.—Fery lens type thermoelectric radiation pyrometer junction. The image is viewed at the ocular O through the sec-tional openings of the shield. The ocular is first carefully focusedupon the thermocouple junction, and the objective is then ad-justed by the pinion P, either for distinctness…
Thermometry, pyrometry and calorimetry · Heat flow, thermal and thermodynamic processes
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