Configurable Items To Always Keep Current; Inlet And Detector Configuration; Column Configuration - Agilent Technologies 7890 Series Troubleshooting Manual

Configurable Items to Always Keep Current

Inlet and detector configuration

Column configuration

Agilent 7890 Series Troubleshooting
Certain configurable items in the GC must always be kept
current. Failure to do so will lead to reduced sensitivity,
chromatographic errors, and possible safety concerns.
If equipped with the optional G3494A or G3494B Barcode
Reader accessory (7890B only), you can directly scan parts data
(column, liner and ALS syringe information) into the GC
without having to type it into the GC at the keypad.
Be sure to configure the GC and all related components to
reflect an inlet or detector change. Below are some examples of
components to keep current after making changes to the inlet or
detector:
Liners: The appropriateness of liner type varies depending on
the GC inlet mode, for example split mode versus splitless
mode, and the analysis.
FPD filters: The FPD filters require different gas flows to
function properly. Configure the flow according to the FPD
filter installed (phosphorus versus sulfur).
FID and NPD jets: Use the jet appropriate for the type of
column installed (capillary column versus packed column).
NPD bead type: Always configure the NPD bead type. An
incorrect type can lead to poor performance or premature bead
failure.
Reconfigure the GC every time a column is trimmed or changed.
Also verify that the data system reflects the correct column
type, length, id, and film thickness. The GC relies on this
information to calculate flows. Not updating the GC after
altering a column causes incorrect flows, changed or incorrect
split ratios, retention time changes, and peak shifts.
Concepts and General Tasks
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