Emerson Rosemount OCX8800A Manual page 24

Description and specifications
December 2022
1.3.9 Calibration
Semi-automatic or automatic
1.3.10 Calibration gas mixtures recommended (reference
test gas bottles kit #1A9919G04)
0.4 percent O
8 percent O
1000 ppm CO, balance air
1.3.11 Calibration gas flow
7 scfh (3.3 L/m), regulated to 20 to 30 psig (1.38 to 2.07 barg)
1.3.12 Reference air
2 scfh (1 L/m), clean, dry, instrument-quality air (20.95 percent O
psig (2.41 barg)
1.3.13 Eductor air
5 scfh (2.5 L/m), clean, dry, instrument-quality air (20.95 percent O
35 psig (2.4 barg)
1.3.14 Dilution air
0.1 scfh (0.05 L/m), clean, dry, instrument-quality air (20.95 percent O
to 35 psig (2.41 barg)
1.3.15 Blowback air (optional)
Clean, dry, instrument-quality air (20.95 percent O
kPa) or greater and ambient temperature of ≥ 0 °F (-18 °C)
1.3.16 Sensors housing
Type 4X, IP66 with fitting and pipe on reference exhaust port to clean, dry
atmosphere, two ¾-14 national pipe thread (NPT) conduit ports (when reference
air vents are routed to a dry area).
1.3.17 Electronics housing
Type 4X, IP66 with fitting and pipe on reference exhaust port to clean, dry
atmosphere, two ¾-14 NPT conduit ports (when reference air vents are routed to
a dry area.
24
, balance N
2 2
, balance N
2 2
00809-0500-4880
), regulated to 35
2
), regulated to
2
), regulated
2
), regulated to ≥ 60 psig (413
2
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