Emerson Rosemount 6888A, Reference Manual

Page: 23 / 136

Environmental specifications
(continued)
Table 1-4:
General purpose certifications
Xi ambient temperature limits -20 to 50 °C (-4 to 122 °F)
Xi temperature limits as measured inside the electronics
housing -20 to 70 °C (-4 to 158 °F)
(1) Reduced cell life can be expected if operated continously at temperatures above 705 °C (1300 °F). Optional bypass and jacket
accessories permit operation to 1050 °C (1922 °F).
Installation specifications - probe Table 1-5:
Probe mounting flange Vertical or horizontal - 2 in. 150# (121 m (4.75 in.) bolt cir-
cle)
Note
Flanges are flat-faced and for mounting only. Flanges are
not pressure-rated. A 2.5-in. diameter hole in the process
is required.
Spool piece PN 3D39761G02 is available to offset probe
electronics housing from hot duct work.
Many adapter flanges are available to mate to existing
flanges.
Probe lengths and approximate shipping weights
457 mm (18 in.) package 7.3 kg (16 lb)
0.91 m (3 ft) package 9.5 kg (21 lb)
1.83 m (6 ft) package 12.2 kg (27 lb)
2.74 m (9 ft) package 15.0 kg (33 lb)
3.66 m (12 ft) package 17.7 kg (39 lb)
Reference air (optional) 2 scfh (1 L/min), clean, dry, instrument-quality air (20.95%
O
2
), regulated to 5 psi (34 kPa)
Calibration Semi-automatic or automatic
Calibration gases 0.4% O
2
and 8% O
2
, balance N
2
recommended. Instrument
air may be used as a high cal gas but is not recommended.
100% nitrogen cannot be used as the low cal gas.
Calibration gas line 91 m (300 ft) maximum length
Calibration gas flow 5 scfh (2.5 L/min)
Heater electrical power 120/140 Vac ± 10%, 50/60 Hz, 260/1020 VA max, 1/2-in. -
14 NPT conduit ports
Traditional architecture cable 61 m (200 ft) maximum length
Power consumption of probe heater 776 VA maximum during warm-up
Description and specifications
Reference Manual 15