Thermo Scientific Corona Veo, Operating Manual

Page: 112 / 262

6 • Operation
Page 112 Charged Aerosol Detectors Corona Veo (RS) Operating Manual
6.4.2.1
Diagnostics Screen
The Diagnostics screen displays real-time information and values with
regard to factory-set and internally calibrated parameters.
If no errors or warnings are active, the Status is Normal .
Figure 20: Diagnostics screen (here: Corona Veo RS)
Diagnostic
parameter
Description Typical Values
Flow Ratio Indicates the ratio of nebulizer gas pressure to
the charging gas pressure (low, normal or high),
calibrated at factory Normal
Ion Trap Voltage that is used to remove highly mobile gas
ions 18 V - 20.9 V
Gas Pressure Indicates the inlet pressure from the gas supply 40 - 65.0 psig
± 0.1 psig (276 -
448 kPa, 2.8 -
4.5 bar)
Evaporation
Temp
• Indicates if the evaporation tube heater is
operating
•
Displays the actual evaporation temperature
On, 35 °C
Charger
Voltage Indicates the applied voltage to the corona
needle to charge the (secondary) ion gas stream 1.8 kV - 3.0 kV
Charger
Current Indicates the current required to produce ions in
the (secondary) gas stream 0.99 µA - 1.01 µA