Emerson Rosemount Oxymitter DR, Reference Manual

Page: 21 / 98

1.4 Specifications
1.4.1 Performance specifications
User configurable O
2
range Variable 0-10% to 0-40%
(Rosemount
™
Xi electronics offer 0-50% O
2
range)
Temperature limits Process: 32 to 1300 °F (0 to 705 °C), up to 2400 °F (1300 °C) with
optional accessories
Electronics housing: -40 to 158 °F (-40 to 70 °C)
Electronics package: -40 to 185 °F (-40 to 85 °C) Operating
temperature inside of instrument housing, as measured by
HART
®
communicator, Rosemount
™
Asset Management
Solutions software)
Local operator interface: -40 to 158 °F (-40 to 70 °C), ambient/
-40 to 185 °F (-40 to 85 °C), internal (At temperatures above 158
°F (75 °C) inside infrared housing, the infrared keypad will cease
to function, but the transmitter will continue to operate
properly.)
Mounting and mounting
position Vertical or horizontal
A spool piece (P/N 3D39761G02) is available to offset transmitter
housing from host ductwork.
Accuracy in oxidizing
conditions ±0.75% of reading or 0.05% of O
2
, whichever is greater
Process temperature effect on
repeatability Less than .05% O
2
from 212 to 1292 °F (100 to 700 °C)
Lowest detectable limit 0.02% O
2
System speed of response to
calibration gas T
intial
< 3 seconds
T90 < 8 seconds
Response to process gas changes will vary depending on process
gas velocity and particulate loading of the diffuser.
Calibration Manual, semi-automatic, or automatic
Calibration gas repeatability ±0.02% O
2
Accuracy in reducing
conditions ±0.10% of reading or 0.1% O
2
, whichever is greater
System responses in reducing
conditions Oxidizing to reducing: T90 in 120 sec.
Reducing to oxidizing: T90 in 30 sec.
Calibration gases Low: 0.4 to 2% O
2
, balance nitrogen
High: 8 to 21% O
2
, balance nitrogen
Regulate to 20 psi (137.9 kPa), 5 standard cubic feet in gas per
hour (SCFH) (2.36 L/min)
Reference air 2 SCFH (1 L/min), clean, dry, instrument quality air (20.95% O
2
),
regulated to 2.5 psi (34 kPa)
Pollution degree 2
Over voltage category II
Reference Manual Description and specifications
00809-0100-4880 October 2019
Rosemount Oxymitter DR 21