INFICON HAPSITE ER Chemical Identification System - Manual (Page 370)

11 - 32
IP
N 07
4-
47
1-
P1
B
HAPSITE ER Operating Manual
SIM for the Analyze (GC/MS) mode allows for creation of multiple sets of masses.
Each set has a Begin Time and an End Time which must be entered when
programming the Set. After the Begin and End Times are entered, as well as an
optional Name, the Mass list for the Set can be entered. Default settings for each
Mass are automatically entered based on the previous Mass. As the Mass list is
entered, the Round Trip Time is automatically calculated and entered in the Scan
Sets grid.
The Scan Sets fields, in the order recommended for editing, are as follows:
Begin Time . . . . . . . . . . . . . . . . . . . Listed in minutes: seconds. It is the time at
which collection of the listed masses should
start.
End Time . . . . . . . . . . . . . . . . . . . . . Listed in minutes: seconds. It is the time at
which collection of the listed masses should
stop.
Name . . . . . . . . . . . . . . . . . . . . . . . . Each Scan set can be assigned a name for
identification purposes. This entry is optional.
NOTE: One of the column entries listed above must be highlighted to enable
editing of the Mass list for that specific Scan Set.
Mass . . . . . . . . . . . . . . . . . . . . . . . . The masses for each set are entered here in
a list. The title above the Mass column -
"Mass Measurements for Scan Set x" -
indicates which Scan Set is being edited.
Mass Width . . . . . . . . . . . . . . . . . . . This defines the number of points the Mass
Spectrometer will scan around the selected
mass in tenths of an AMU. For example, a
Mass Width of 0.6 will scan 0.3 on each side
of the peak centroid.
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 ppb level
compounds. Do not set this for Internal
Standards, because this will lower the
intensity from the other masses, causing loss
of possible target masses.