Yokogawa In-Situ Gas Analyzer TDLS200 - Manual (Page 76)

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IM 11Y01B01-01E-A 6th Edition :Feb 13, 2013-00
<6. BASIC OPERATION>
ADVANCED CONfIGURE MENU (UPDATED)
The Advanced Configure Menu has been updated with a sub-
section titled
Non-Process Parameters.
NON-PROCESS PARAMETERS
These non-process parameters are for the measured gas in the
optical path but outside of the process path length.
These parameters MUST be entered for an accurate
measurement if the purge is not nitrogen (when measuring
Oxygen) or when a line locking gas is being used (such as %
CO for combustion CO/CH
4
applications)
NON-PROCESS PATH LENGTH
This is the optical path length between the laser and detector
excluding the process path length.
The factory values entered include the analyzer internals and
the alignment flanges. The distance of process isolation valves
and process nozzles (on both Launch and Detect sides) MUST
be added to the existing factory values.
NON-PROCESS PRESSURE
This is the pressure of the non-process gas. Typically, this
will be close to atmospheric pressure of 1.01 BarA or 14.7
PsiA. Check the actual operating conditions and enter the
appropriate value. Contact Yokogawa if unsure.