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Type 4 EFC (for Valved Systems)
If you indicate that a Type 4 EFC is installed, a pressure ramp spreadsheet and a
flow time program spreadsheet will appear.
Pressure spreadsheet.
Flow spreadsheet.
The first row of the pressure spreadsheet contains the Initial pressure and hold
time for the Type 4 EFC. The EFC will equilibrate to this setting when the method
is activated, and will be restored to this setting when each chromatographic run
is completed.
Rows after the first row of the pressure spreadsheet contain the programmed
settings for each of the ramp segments. Each segment will ramp to the specified
pressure at the specified rate (assuming the rate is achievable), and then hold
the pressure for the specified time. (Note that the Rate in the first row is always
blank and cannot be edited. Also note that the entire Total column cannot be
edited.)
Use the flow spreadsheet to build a flow time program to control the Type 4 EFC
total flow. The first row of the flow spreadsheet contains the Initial Total Flow for
the Type 4 EFC. The EFC will equilibrate to this setting when the method is
activated, and will be restored to this setting when each chromatographic run is
completed.
Rows after the first row of the flow spreadsheet contain the time-programmed
settings for the Total Flow. The Total Flow will be switched to the value in each
row at the indicated time.
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