SRI - Model 8690-2007 - Catalytic Combustion Detector (CCD) - Brochure

The CCD is about as sensitive as a TCD, but it has the hydrocarbon selectivity of an FID while capable of operating on air alone. Because the CCD needs no compressed gases like hydrogen or helium, it can be used in SRI’s Gas-lessTM GCs where a built-in, ″whisper quiet″ air compressor supplies the ambient air carrier gas. The CCD can also be used as a hydrocarbon monitor in non-chromatographic applications where the CCD senses the total hydrocarbon content of a flowing air stream, or as a hydrogen/hydrocarbon leak detector.