Emerson OXYMITTER 4000 - Manual (Page 73)

Instruction Manual
IB-106-340 Rev. 3.0
December 2003
Rosemount Analytical Inc. A Division of Emerson Process Management Installation 2-19
Oxymitter 4000
2-6 PNEUMATIC INSTALLATION (FOR
OXYMITTER 4000 WITH SPS 4000)
Do not use 100% nitrogen as a low gas
(zero gas). It is suggested that gas for
the low (zero) be between 0.4% and
2.0% O2. Do not use gases with hy-
drocarbon concentrations of more
than 40 parts per million. Failure to
use proper gases will result in errone-
ous readings.
Locate the 1/4 in. calibration gas fittings on the
SPS 4000 manifold (Figure 2-3). Connect O
2
calibration gas 1 (high calibration gas) to the
HIGH CAL GAS IN fitting and O
2
calibration gas
2 (low calibration gas) to the LOW CAL GAS IN
fitting. Ensure the calibration gas pressure is set
at 20 psi (138 kPa).
a. Reference Air Connection (Optional)
If the reference air option (which includes
the reference air flowmeter, pressure regu-
lator, and necessary tubing and fittings) is
used, connect the instrument air to the
1/4 in. fitting on the reference air pressure
regulator (Figure 2-3). The pressure regu-
lator is factory set at 20 psi (138 kPa). Re-
adjust by turning the knob on the top of the
regulator to obtain the desired pressure.
If the SPS 4000 does not have the refer-
ence air option, connect the reference air to
the Oxymitter 4000 as instructed in para-
graph 2-5.
2-7 IMPS 4000 CONNECTIONS
See the IMPS 4000 Intelligent Multiprobe Se-
quencer Instruction Bulletin for wiring and
pneumatic connection.
NOTE
!
Upon completing installation, make sure that the Oxymitter 4000 is turned on and operating
prior to firing up the combustion process. Damage can result from having a cold Oxymitter
4000 exposed to the process gases.
During outages, and if possible, leave all Oxymitter 4000 units running to prevent condensa-
tion and premature aging from thermal cycling.
If the ducts will be washed down during outage, MAKE SURE to power down the Oxymitter
4000 units and remove them from the wash area.