NUCLEAR_RESONANCE_SENSOR

Published:2009/7/21 21:36:00 Author:Jessie | From:SeekIC

Temperature telemeter depends on absorption of r-f energy by chlorine molecule in proportion to temperature. When spectrometer oscillator V1 is tuned to frequency of correct absorption line, each oscillator pulse sets up oscillations in probe that last long enough to affect starting voltage for next oscillator pulse. After plate detection and low-pass filtering to suppress quench frequency, signal goes to two-stage a-f amplifier Q1-Q2, whose output to cro indicates whether spectrometer is on nuclear resonance frequency.-C. Dean, Using Nuclear Resonance to Sense Temperature, 33:28, Electronics, p 52-54.



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