Electrical Engineering ⇒ Topic : Application of thermocouple
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Maninder
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Applications. The most useful application is in high-frequency circuits (e.g., radio work) because the forces operating the pointer are practically independent of frequency. The moving-iron or dynamometer instruments will be simply useless in such situations. The thermocouple meter is normally employed for accurate measurement of radio-frequency aerial and feeder currents. Note. An interesting variation of the thermocouple meter is the pyrometer, an instrument used to measure high temperatures. Here, only the thermocouple and permanent-magnet moving coil millivoltmeter are used.The junction of the thermocouple is applied to the object whose temperature is to be measured. The meter scale is marked in degrees to indicate the temperature of the object | |
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