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Instruction Manual
IB-106-340CDR Original Issue
January, 2002
1-2 Description and Specifications Rosemount Analytical Inc. A Division of Emerson Process Management
Hazardous Area Oxymitter DR
The Hazardous Area Oxymitter DR meas-
ures net oxygen concentration in the pres-
ence of all the products of combustion,
including water vapor. Therefore, it may be
considered an analysis on a “wet” basis. In
comparison with older methods, such as the
portable apparatus, which provides an
analysis on a “dry” gas basis, the “wet”
analysis will, in general, indicate a lower per-
centage of oxygen. The difference will be
proportional to the water content of the sam-
pled gas stream.
c. System Configuration
Hazardous Area Oxymitter DR units are
available in three length options, giving the
user the flexibility to use an in situ penetra-
tion appropriate to the size of the stack or
duct. The options on length are 457 mm
(18 in.), 0.91 m (3 ft), 1.83 m (6 ft).
Abrasive shields are offered for applications
where abrasive particulates are present.
Acid resistant cells are available for SO
2
and HCl environments. Bypass and probe
mounting jacket options are available for
process temperatures above 1300°F
(705°C).
d. System Features
1. The cell output voltage and sensitivity
increase as the oxygen concentration
decreases.
2. Field replaceable cell, heater, thermo-
couple, and diffusion element.
3. The Hazardous Area Oxymitter DR is
constructed of rugged 316L stainless
steel for all wetted parts.
4
1
2
3
36220001
1. Instruction Bulletin
2. Adapter Plate with Mounting Hardware and Gasket
3. Hazardous Area Oxymitter DR
4. Reference Air Set
Figure 1-1. Typical System Package