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Line 7: The IR [[signal processing\|signal]] from the source is usually chopped or modulated so that thermal background signals can be offset from the desired signal. ==Range== [[Toxic]] gasses are measured in the low parts per million ([[Parts-per notation\|ppm]]) range. Flammable gasses are measured in the 0 - 100 % [[lower flammable limit]] (LFL) or [[lower explosive limit]] (LEL) range. ==See also==

Infrared point sensor: Difference between revisions