Thermo Scientific LevelPRO, User Manual

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Operation
Detector Screens
Detector
Screens
From the EZ Cal II menu tree, click Detector #1. By default, the Setup tab is
displayed.
Setup Tab To access the information on the Detector Setup tab using only the remote transmitter
keypad, see
Figure A-4 .
Figure 4-17. Detector Setup Tab
Detector Setup Many of the fields on the Detector Setup tab provide the user with the ability to set up
the detector parameters based on application-specific requirements.
1. Enter the time constant, in seconds, in the Time Constant (sec) textbox.
2. Choose whether to enable or disable dynamic tracking from the Dynamic
Tracking Enable dropdown.
a.
Enabling dynamic tracking ensures rapid, smooth filtered counts in response
to significant changes in the process level. The dynamic tracking system
contains a slow filter and a fast filter. Initially, filter data counts use the slow
filter. The fast filter uses a normal averaging time constant. The difference
between the data counts of the slow and fast filters are monitored constantly.
When the difference exceeds the dynamic tracking threshold percentage,
which has a default value of 5.3% of filtered counts, dynamic tracking is
activated. The output then switches to the faster filter, with the fast signal
using the value of slow signal as a starting point. After one fast filter time
constant, the difference of the slow and fast filters is calculated. If the
difference falls below the threshold value, dynamic tracking is de-activated and
the output switches back to the slow filter, with the slow signal using the value
of fast signal as a starting point.
b. When Disable is selected, no action will be taken.
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32 LevelPRO User Manual Thermo Scientific