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Thermocouple open circuit detection with tone frequency signal application and spectral analysis
Thermocouple open circuit detection with tone frequency signal application and spectral analysis
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机译:热电偶开路检测以及音频信号应用和频谱分析
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摘要
An improved open circuit detector for testing a thermocouple for an open circuit condition. The detector includes a generator for providing and sourcing a tone signal to the thermocouple, wherein the tone signal has a known frequency and amplitude. A monitor analyzes the amplitude of a particular frequency component of a tone signal across the thermocouple. If the amplitude of the particular frequency component exceeds a predetermined threshold, an output is provided for indicating an open circuit condition for the thermocouple.
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