Fuji Electric ZSS-8 Series, Instruction Manual

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INZ-TN8ZSS-E
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6.5 Parameter setting
On the “Parameter Setting” screen, “Path length” related to measurement value and “Average Period” related
to average value output are set. Items to be set are as follows.
Setting items
Path length : Enter the optical path lengths.
Purge length : Enter the total length of the purge length A and the purge length B shown in the figure
in 6.5.1. Set whether you use the blast purge or not. The purge length setting is required
only for the O
2
measurement for combustion control.
Avg. Period : This parameter is for the average value output. Set the time (in minutes) used for cal-
culation of the moving average.
cv O
2
: Set the reference O
2
concentration used for converting the measured values.
Reset Avg.Gas : This parameter is for the average value output. This allows you to reset the average
value.
Key Lock : No key operation except for the key lock OFF can be performed.
Disp.OFF : Set the on or off of the screen timeout function. If you turn on the screen timeout, you
also have to set the time (in minutes) until the screen automatically goes off after the
last operation.
Date/Time : Set the current year/month/date, hour: minute: second.
Select the “Parameter Setting” from the “Menu” screen, and press the
key.
6.5.1 Path length
Enter the diameter of the stack where the receiver unit and the transmitter unit are attached. It does not in-
clude the lengths of companion flange. This value has a direct effect on the measurement value, so be sure to
enter correctly. Otherwise, measurement value will not be properly displayed or output. Enter the value in the
millimeter. (Input range is from 100 to 15000mm.)
Note
In default setting, the analyzer calculates the gas concentration assuming the optical path length is one
meter. Be sure to set the correct path length because the volume of the light absorbed by a gas changes
with the optical path length.
ENT