Yokogawa Extractive Oxygen Gas Analyzer TDLS220 - Manual (Page 39)

<6 BASIC OPERATION> 6-9
IM 11Y01B02-01E-A 4th Edition September 11, 2012-00
SYSTEM I/O – ANALOG INPUT
Pre-calibrated at factory and not normally required.
Allows calibration of 4 to 20mA input channels; follow
onscreen instruction.
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 Con-
centration or Transmission level (high or low) that will
trigger analyzer warning and subsequent DO.
FIELD LOOP CHECK – allows wiring connection check
during field installation.
CHANNEL 1 WARNINGS menu allows setting of
various analyzer WARNING conditions. Warning
is an event that will reduce but not eliminate the
measurement integrity, it is an indication that
maintenance is required but the analyzer is still
operational.
DETECTOR SIGNAL LOW – level at which low
detector signal will trigger a warning – ONLY ADJUST
WITH FACTORY ASSISTANCE.
TRANSMISSION LOW – level at which low
transmission will trigger a warning – ONLY ADJUST
WITH FACTORY ASSISTANCE.
SPECTRUM NOISE HIGH – level at which excessive
spectrum noise will trigger a warning - – ONLY
ADJUST WITH FACTORY ASSISTANCE.
PROCESS PRESSURE OUT OF RANGE – upper and
lower levels at which process gas pressure reading will
trigger a warning.
PROCESS TEMPERATURE OUT OF RANGE – upper
and lower levels at which process gas temperature
reading will trigger a warning.