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Charged Aerosol Detectors

Corona Veo and Corona Veo RS

Operating Instructions Page 21

2.6 Flow Connections

The detector is designed to provide easy access to the capillary and tubing connections.

Open the cover on the right front side of the detector to access the liquid inlet. Slots at the

top and on the right side of the white front panel cover provide paths for capillary

connections to the system.

Tip: The flow path between the column and the detector should be as small a

volume as possible (shortest capillary connection possible) to avoid peak

broadening effects and the accompanying loss of chromatographic efficiency.

2.7 Nebulizer

The detector is shipped without a nebulizer being installed. Install a nebulizer before

operation as described in the Installation Instructions for the nebulizer.

The FocusJet concentric nebulizer is the liquid inlet of the detector. Gas supplied by an

external gas source is directed to the nebulizer and merged with the incoming liquid from

the column to create an aerosol.

2.8 Manual Gas Regulator Knob (Corona Veo only)

The Corona Veo detector is equipped with a manual gas regulator. An adjustment knob on

the rear panel of the detector is used to regulate the internal gas pressure.

2.9 Stream-Switching Valve (Corona Veo RS only)

The Corona Veo RS is equipped with a 6-port 2-position stream-switching valve (SSV).

The SSV can be used to direct flow to the nebulizer or divert to external devices or waste.

To connect the stream-switching valve, see section 4.4.5 (→ page 40).

For further information about the operation of the stream-switching valve, see section 5.5.2

(→ page 64).

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