Fireye PPC4000 SERIES, Руководство пользователя

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NXCES02 OXYGEN PROBE
The NXCESO2 oxygen sensing probe is designed to operate with the PPC4000 and provides trimming of the air or
fuel servos to maintain predefined O2 target levels resulting in optimum combustion. Refer to Commissioning and
Adjust Ratio procedures. The NCESO2 also provides the stack temperature measurement. The user has the option to
activate both O2 level and flue temperature level alarms and the alarms can be selected to be warning or lockout.
Refer to O2 setup menu parameters later in this bulletin.
The NXCESO2 is available in 3 probe lengths, 8, 16, and 30 inches to accommodate most stack diameters. The open
end of the probe should be located close to the center of the stack (flue).
The NXCESO2 is 24 vdc powered from the PPC4000. Data exchange to and from the probe is done through mod-
bus communications @ 57.6 kbaud using a twisted shielded pair. JP1 is a baud rate selector and must be left in place
for proper connection to the PPC4000.
The NXCESO2 contains an integrated cooling fan that is controlled by the on-board microprocessor. The fan will
turn on when the internal temperature exceeds 70°C (158°F) and turn off when the temperature drops below 45°C
(113°F).
The O2 probe mounts in the stack using Fireye mounting flange kit 35-381-2. See 133-750 for mounting dimensions
and instructions.
Recommended Oxygen Probe Mounting Positions
The probe must be mounted in a manner that ensures that the flue gases pass into the gas tube at its open end and out
of the tube at the flange end. Furthermore, if possible, the flange should be vertical with the gas tube angled down-
wards to ensure that particulates do not build up within the sample tube. Probe mounting with the flange horizontal
is acceptable. Inverted probe mounting is not acceptable.
O2 PROBE MOUNTED
NOTE ORIENTATION
RELATIVE TO
FLUE GAS FLOW
FLUE GAS
FLUE GAS
SIDE VIEW
VERTICAL FLUE
PROBE MOUNTED ON SIDE
02%&%22%$-/5.4).'
1
30°
FLUE GAS
FLUE GAS
SIDE VIEW
O2 PROBE MOUNTED
NOTE ORIENTATION RELATIVE TO
FLUE GAS FLOW
CL
CL
FLUE
FLUE
TOP VIEW
SIDE VIEW
FLUE GAS
FLUE GAS
CL
3
FLUE GAS
FLUE GAS
TOP VIEW
CL
FLUE
FLUE
FLUE GAS
SIDE VIEW
O2 PROBE MOUNTED
NOTE ORIENTATION RELATIVE TO
FLUE GAS FLOW
HORIZONTAL FLUE
PROBE MOUNTED ON SIDE
!##%04!",%-/5.4).'
2
HORIZONTAL FLUE
PROBE MOUNTED UNDERNEATH
5.!##%04!",%-/5.4).'
4
./.02%&%22%$-/5.4).'
HORIZONTAL FLUE
PROBE MOUNTED ON TOP