Yokogawa In-Situ Gas Analyzer TDLS200 - Manual (Page 67)

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IM 11Y01B01-01E-A 6th Edition :Feb 13, 2013-00
<6. BASIC OPERATION>
SYSTEM I/O - DIGITAL OUTPUT
Setting of Digital Output assignments (DO 1-3)
CHANNEL 1 WARNINGS – Setting of levels that will trigger
analyzer warning and subsequent DO
CHANNEL 2 FAULTS – Setting of levels that will trigger analyzer
fault and subsequent DO
CHANNEL 3 USER ALARM – Setting of either Concentration
or Transmission level (high or low), calibration/validation status
that will trigger analyzer user alarm DO/status
FIELD LOOP CHECK – allows for convenient field loop
checking of the digital alarm output contacts, follow the on-
screen directions
CHANNEL 1 - WARNINGS
Menu allows setting of various analyzer WARNINGS conditions.
WARNING is an event that will indicate that maintenance is
require and the analyzer is still operational.
– PLEASE ADJUST WITH ONLY FACTORY ASSISTANCE –
WARNINGS CONDITIONS ARE IMPORTANT SETTINGS
DETECTOR SIGNAL LOW – lower raw detector signal limit
TRANSMISSION LOW – lower limit of transmission. Note, when
transmission falls below this value, the automatic peak tuning
function is disabled. This is to prevent excessive noise (caused
by low transmission) interfering with correct peak tuning.
SPECTRUM NOISE HIGH – factory set, do not adjust
PROCESS PRESSURE OUT OF RANGE – typically set for the
min-max expected process pressure. Note, if operating outside
the known conditions, measurement accuracy may be affected
PROCESS TEMPERATURE OUT OF RANGE – typically set for
the min-max expected process temperature. Note, if operating
outside the known conditions, measurement accuracy may be
affected
CONCENTRATION OUT OF RANGE – set for any desired alarm
points
BOARD TEMPERATURE OUT OF RANGE – used to indicate
excessively hot-cold ambient conditions for the analyzer
DO-WARNING DELAY – to avoid single event alarms that have
proven to be short terms events, enter a number of readings to
delay before the alarm becomes active