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HAPSITE ER Operating Manual
Extra . . . . . . . . . . . . . . . . . . . . . . . . This sets the number of extra scans, from 0 -
10, for each mass. Extra scans lower the
detection limits by increasing the intensity
within the Mass Spectrometer. Extra scans
should be used when scanning for
compounds with concentrations of ppb or
lower.
Dwell . . . . . . . . . . . . . . . . . . . . . . . . Dwell is the amount of time the software will
search each for the selected mass. The dwell
can be set from 100 µs - 5,000 µs. 400 µs is
recommended. Increasing the Dwell
decreases the detection limit.
Lead In. . . . . . . . . . . . . . . . . . . . . . . Lead In determines the number of points the
Mass Spectrometer will skip prior to scanning
the desired mass peak. Best practice is to set
the Lead In to at least a 1000 µs delay prior
to collecting data. The delay is based on
Lead In multiplied by the Dwell.
NOTE: The Mass Width, Extra, Dwell and Lead In values for a new entry are
automatically populated based upon the entry listed above.
NOTE: To fill any column with the entry listed above, click in the desired cell and
press Ctrl+D.
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