Yokogawa In-Situ Gas Analyzer TDLS200 - Manual (Page 68)

6-11 6-12
IM 11Y01B01-01E-A 6th Edition :Feb 13, 2013-00
<6. BASIC OPERATION>
CHANNEL 2 fAULTS
Menu allows setting of various analyzer FAULT conditions.
FAULT is an event that will eliminate the measurement
integrity, it is an indication that maintenance is require and the
analyzer is not operational.
– ONLY ADJUST WITH FACTORY ASSISTANCE – FAULT
CONDITIONS ARE CRITICAL SETTINGS THAT CAN
RESULT IN DAMAGE TO THE ANALYZER IF IMPROPERLY
PROGRAMMED -
LASER TEMPERATURE OUT OF RANGE – upper and lower
fault conditions for laser temperature
DETECTOR SIGNAL HIGH – upper raw detector signal limit
DETECTOR SIGNAL LOST – lower raw detector signal limit
MEASUREMENT PEAK NO RESPONSE – Used when Line
Locking gas and/or Non-Process Parameters are enabled
to detect the loss of absorption peak, i.e. the measured
absorption peak falls below the set threshold value – consult
factory for further details if attempting to implement Line-
Locking gas and/or non-process parameters.
To disable
this Fault (only under guidance from factory authorized
personnel) please enter a value of -1
PEAK CENTER OUT OF RANGE – loss of peak center control
VALIDATION FAILURE – Allows the user to refine the most
appropriate +/-% for validation PASS/FAIL criteria. Some
process and conditions of application will require a large
PASS/FAIL criteria (as much as +/-50%) due to the variables
and dynamic nature of the application. On-Line Validation
can be considered as Response Checking. Please consult
Yokogawa for further information and help in determining what
an appropriate Pass/Fail criteria is for the specific application.
DO FAULT DELAY - this feature allows the end user to
minimize potentially non-impacting nuisance alarms by adding
some delay before the analyzer reports the Fault Alarm