Inficon HAPSITE ER - Page 413

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HAPSITE ER Operating Manual
Column . . . . . . . . . . . . . . . . . . . . . . The column is a long glass capillary which is
lined with a material (called the “stationary
phase”) with which the analytes interact
based on their physical characteristics,
slowing their flow. The degree of this
interaction progressively separates the
different compounds from one another during
elution.
DAC . . . . . . . . . . . . . . . . . . . . . . . . . Digital to Analog Converter. An element of
the electronic circuitry which converts the
microprocessor’s digital instructions to the
analog requirements for control of the
instrument.
DOC . . . . . . . . . . . . . . . . . . . . . . . . . Declaration of Contamination document. All
chemicals that have been run through the
HAPSITE must be listed on the form prior to
service and repairs.
Elution time. . . . . . . . . . . . . . . . . . . The elapsed time from injection of a specific
compound onto the column until the
compound exits the column (same as
retention time).
ET. . . . . . . . . . . . . . . . . . . . . . . . . . . Elapsed time of sample run. Used in Survey
method instead of retention time.
Filament. . . . . . . . . . . . . . . . . . . . . . A hot wire in the ionizer from which electrons
are emitted.
Filament Delay . . . . . . . . . . . . . . . . This specifies the amount of time between
the start of analysis and the time which the
HAPSITE turns on the filament. Filament
delay allows components of the air peak or
solvents to pass through the mass
spectrometer before the filament is turned
on.
GC . . . . . . . . . . . . . . . . . . . . . . . . . . Gas Chromatograph.
GUI . . . . . . . . . . . . . . . . . . . . . . . . . . Graphical User Interface.
Inlet State . . . . . . . . . . . . . . . . . . . . This refers to the valve states in the
HAPSITE The states of the valves control
sampling, analysis, clean-out of the
HAPSITE ER.