Veo Observer Plus Instruções de Operação descarregar pdf (Página 68)

Charged Aerosol Detectors

Corona Veo and Corona Veo RS

Page 60 Operating Instructions

2. If applicable

In the Run Mode Menu, select the Exit soft key to return to the Main Menu.

Tip: If you operate the detector from a chromatography data system, you may

need to disconnect the detector in the system in order to access the Main

Menu.

3. In the Main Menu, select the System Menu soft key.

4. Select the Gas soft key to display the current gas pressure value.

5. Before adjusting the pressure, loosen the lock nut of the gas regulator knob on the rear

panel of the detector.

6. Adjust the gas pressure:

♦ To increase the gas pressure, turn the regulator knob slowly clockwise.

♦ To decrease the gas pressure, turn the regulator knob slowly counterclockwise.

7. While turning the knob, monitor the increase or decrease of the gas pressure on the

detector display.

8. Re-tighten the lock nut of the regulator knob. Ensure that the indicated pressure

reading on the display does not change. Hold the regulator knob while tightening the

lock nut. This will ensure that the pressure does not change while you tighten the lock

nut.

9. Wait until the gas pressure has stabilized and reached the set point. Monitor the gas

pressure (→ see further down in this section).

Setting the Gas Pressure for the Corona Veo RS

Regulate the internal gas pressure from the display to provide a consistent nebulizer

pressure for a stable aerosol.

1. If applicable

Stop the mobile phase flow from the pump and wait several minutes for the detector

pressure to stabilize.