Servomex NanoTrace DF-760E, Instruction Manual

Page: 102 / 182

98 DF-760E User Interface
Three ranges can be entered in this screen. The range of the primary Full Scale (FS) must
be less than that of the Expanded Full Scale “A” (FS A) which must be less than that of the
Expanded Full Scale “B” (FS B). The analyzer auto-ranges between the three outputs
depending on the current analyzer reading. Relay contacts can then be assigned to signal a
change in range. If only one expanded range is required, rather than two, then the value of
FS B should be set to equal the FS A value. A window as narrow as 10% of the analyzer’s
decades can be set for the full-scale analog output.
Figure 101: Output SetUp Screen
The
In Calibration Relay
can be enabled to signal that a zero or span calibration is in
process. In addition, the user has the option to freeze the analog output or enable the analog
output to update as the calibration progresses.
7.6.9 Oxygen Graph Setup Screen
Figure 102: Oxygen Graph Setup Menu
The Graph Setup is used to adjust the time scale on the front display of the analyzer. A
specific time interval in minutes can be chosen for that display. The information on the
display represents current data and will show a history of concentration from the given
time span to the present. The Y-axis of the main data display is auto-ranging.