INFRARED FLUID ANALYZER

摘要

An infrared fluid analyzer with an improved sensitivity and signal to noise ratio is provided. The device includes a capacitor microphone for detecting absorption by the sample of characteristic infrared wavelength lines, and utilizes an electret material to electrically polarize the capacitive element. Also included are means for controlling the temperature of the infrared radiation source in order to stabilize the output thereof and increase the reliability of the instrument, and means for controlling the temperature of the fluid sample. In a doublebeam embodiment of the invention, a gas-free reference cell is provided to further stabilize the instrument.