Gamma Vacuum SPCe - System Information Menu (Sys)

Figure 3. Accessing Main Menu settings
6.2. System information menu (Sys)
Figure 4. System information menu (Sys)
Size
The Size parameter must be set prior to high voltage operation. Setting the
correct pump size allows the controller to properly monitor power delivered
to the ion pump and calculate pressure.
Figure 5. Pump size
Pressure is calculated using the following current-to-pressure calculation:
Where:
▪ I - Current in amps.
▪ V - Voltage in volts. (SPCe is variable)
▪ U - Pressure units conversion factor (1 for Torr, 1.33 for mbar and 133 for Pascal).
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