Axis BTA 2100D Instrukcja Operatora Pobierz pdf (Strona 355)

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Rows after the first row of the 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.)

Constant Column Flow for Type 1 EFC

Constant Column Flow mode for Type 1 EFC is enabled in the Flow/Pressure

section.

Click on the Radio Button to turn on the Constant Column Flow Mode. This mode

disables the spreadsheet and reveals the constant flow rate value.

Enter the desired Column Flow.

Click on “Yes” to perform a pressure pulse injection. Upon injection, the pressure will

change to the Pulse Pressure for the Pulse Duration setting.

When the method is activated in System Control, the Varian MS Workstation will

generate and download the appropriate pressure program corresponding to the

Column Temperature program, the Column Setup Length and Diameter, the

Carrier Gas, and the ambient Barometric Pressure. These parameters are

specified in the 3900 GC system control setup, and the Barometric Pressure is

measured by the 3900 at the time the Method is downloaded. The 3900 will run

the pressure program to hold the Column Flow at the specified value as the

Column Temperature is ramped during each run.

Injector Section

Use the Injector Program to specify the temperature setpoints of the isothermal

1177 Injector, and split ratio of the 1177 Injector.

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