Thermo Scientific MIRAN 205B Series Instruction Manual page 91

Chapter 7 Configuration and Setup
Pathlength
Pathlength specifies a long or short pathlength. The last pathlength condition configured
is shown on the display. If this is the pathlength condition for the present application,
press . The display changes to the next parameter to be configured. Press to
ENTER 1
change the pathlength condition. The Pathlength Select Display appears. Select the
condition for the application (Long or Short). The display responds "-ACCEPTED-" and
then changes to the next parameter to be configured.
Dwell Time
Dwell Time specifies the time analysis stays on a wavelength and averages measurement
data. The last dwell time configured is shown on the display. If this is the desired dwell
time, press . The display changes to the next parameter to be configured. Press
ENTER 1
to change the dwell time. The Dwell Time Enter Display appears. Key in the desired
dwell time (0 to 65535) and press . If the entry is valid, the display responds
ENTER
"-ACCEPTED-" and then changes to the next parameter to be configured. Typical dwell
time is 275 (5 second analysis time). Consult a Thermo Fisher Scientific applications
chemist for any dwell time change.
Purge % of Max
Purge % of Max specifies the percent of maximum sample cell purge to perform. For
most gases, 60 seconds or 100% provides enough flushing of the gas cell to clear the
previous sample. At a flow rate of approximately 14 liters/minute and a cell volume of
approximately 2.2 liters, the SapphIRe analyzer has provided about six volumes of air.
Typically, 5 volumes of air will purge the cell by 99%. Although certain gases can be
flushed faster, setting percent of purge parameter to 100% is recommended.
The last percent of purge configured is shown on the display. If this is the desired percent
of purge, press . The display changes to the next parameter to be configured. Press
ENTER
to change the percent of purge. The Percent of Purge Enter Display appears. Key in the
1
desired percent of purge (0 to 100) and press . If the entry is valid, the display
ENTER
responds "-ACCEPTED-" and then changes to the next parameter to be configured.
Batch Mode
Batch Mode enables or turns off this mode. The last mode condition configured is shown
on the display. If this is the desired mode condition for the present application, press
. The display changes to the next parameter to be configured. Press to change the
ENTER 1
mode condition. The Mode Select Display appears. Select the condition for the
application (Enabled or Off). The display responds "-ACCEPTED-" and then changes to
the next parameter to be configured.
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