Commands and Tips for Third-Party Devices
Perkin Elmer Autosystem (XL) and Clarus GCs: Split Valve Control for PSS and CAP Inlets

If you have a Perkin Elmer capillary split inlet installed, the GC cannot control the split valve automatically, neither with split programs nor with splitless programs. To control the split valve manually, enter the initial value and operate the valve during analysis. Please note: CAP = not programmable, PSS = programmable.

In split mode, the split valve remains open during the entire analyzing process (the usual setting in Chromeleon is Split1 or Split2, for inlets 1 or 2). Therefore, it is sufficient to set the valve to On at the retention time 0.000 min.

 . . .

0.000  Split1.On

Inject

GC_1.AcqOn

. . .

In Splitless mode, the split valve remains closed during injection and is opened afterward; e.g.:

-0.500 Split1.Off  ;(optional)

0.000  Split1.Off  ;(necessary)

 Inject

 GC_1.AcqOn

 . . .

1.000 Split1.On ;(enables the split flow to purge the inlet)

 . . .

2.000 GC_1.AcqOff

For more information about how to control the various split modes, refer to the Perkin Elmer operating manuals for the instruments.

For installation details, refer to:

 Perkin Elmer Autosystem (XL) and Clarus GCs: Installation.