Emerson Rosemount OCX8800A - Page 49

Figure 2-13: Pneumatic installation, Rosemount OCX8800 with reference air
set, solenoids, and autocalibration, with COe zero function
A. Sensor housing
B. Eductor air in
C. Electronics housing
D. Calibration gas in
E. Reference air in
F. Dilution air in
G. Dilution air flow meter 0.1 scfh
H. Instrument air out
I. Calibration gas flow meter (7 scfh, 20-30 psig [1.4 to 2.1 barg] recommended)
J. Two-stage regulators
K. Instrument air supply
L. Pressure regulator/filter 35 psig (2.4 barg) for general purpose, 45 psig (3.1
barg) for hazardous areas
M. 2-in. pressure gauge, 0-60 psig (0 to 4.1 barg)
N. Combination filter-regulator, 0-60 psig (0 to 4.1 barg)
O. Flow meter, 1-10 scfh
P. Flow meter, 0.05-0.5 scfh
Q. Calibration gas out
Note
If instrument is to be used as the high O
2
calibration gas, the low O
2
and COe
calibration gases must also be set to the same pressure.
Manual
Install
00809-0500-4880 December 2022
Rosemount OCX8800A 49