INFICON VGC403 Three-Channel Measurement and Control Unit - Manual (Page 26)

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tinb07e1-e 2011-07 Vacuum Gauge Controller
off when the pressure on channel 2 exceeds the switch-
off threshold.
CH 3
By channel 3. This setting is only available if the unit is
equipped with three channels. The subsequent parame-
ter t-off is used to specify the switch-off threshold. The
sensor is switched off when the pressure on channel 3
exceeds the switch-off threshold.
5.2.9 Switch-off threshold (t-off)
This parameter is only available if the sensor deactivation
parameter is set to CH 1, CH 2 or CH 3. See Chapter 5.2.8
Sensor deactivation (S-oFF), 25.
The t-off parameter is used to specify a switch-off thresh-
old. The sensor is switched off when the pressure on the
respective channel exceeds the switch-off threshold.
5.2.10 Emission (EMi)
This parameter defines the rules for switching the emis-
sion on.
Tab. 5-5 EMi parameter values
5.2.11 Filament selection (FiL)
This parameter defines the rules for selecting the active
filament.
Tab. 5-6 FiL parameter values
5.2.12 Pirani range extension (PrE)
Extend the display and the setpoint adjustment range.
Tab. 5-7 PrE parameter values
Display Significance
Auto Emission is switched on and off by
the sensor electronics
MAn Emission is switched on and off
manually
Display Significance
Auto The sensor alternately selects one
of the two filaments
Fil 1 Filament 1 ist active
Fil 2 Filament 2 ist active
Display Significance
oFF Normal operation
on Range extension:
• Display down to 5
× 10 -5
mbar
• Setpoint adjustment range
down to 2 × 10 -4 mbar
Display Significance