StarTOC Series 300NDIR Gas Analyzer - Brochure

The focused infrared (IR) source is electronically chopped and radiates IR energy down the optical path onto the dual detector assembly. The analytical detector responds specifically to the gas of interest. The reference detector does not respond to that gas or other gases in the sample stream. Differential ratioing of the analytical and the reference signals several times each second provides stable, drift-free operation. Precise temperature control of the gas/sample system adds stability over a wide range of environmental conditions.