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03-914648-00:7
Type 3 and
4 EFC
Type 3 EFC is a flow controlled system that is used with the 1041 On-
Column and 1061 Flash-Vaporization injectors. Type 4, used for valves, is a
pressure controlled system with a flow controller in parallel with a pressure
regulator. It can supply a rapid increase in inlet flow rate if the pressure
drops suddenly, such as after a valve switch.
ACTIVE
METHOD
EDIT
METHOD
CTRL
RUN
TIME
END
TIME
EDIT MIDDLE EFC (Type 3)
Outlet Pressure:
Atm
Pressure Display Units:
psi
AutoCalibrate
Save and Exit
Type 3 and 4 EFC have the same SETUP screens.
For this Parameter …
Enter…
Outlet Pressure
Atm if the column exit is to atmospheric pressure
Vacuum if the column is connected to a vacuum source, e.g.,
Varian Mass Spectrometer.
Pressure Display Units
psi, bar, kPa, depending on which pressure units that you want to
display.
Type 3 and 4 EFC have the following softkeys:
Press this softkey
If you want to…
AutoCalibrate Automatically
calibrate the EFC system. When it is finished, a
screen will display either a successful completion or detected
problem message. No other GC functions can be performed
during AutoCalibration.
Note that AutoCalibration should be done
on a semiannual basis, or whenever an EFC module is changed.
Save and Exit
Save the changed parameters and reinitialize the 3800.
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