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Instruction Manual
IB-106-5081, Rev. 1.0
May 2005
1-6 Description and Specifications Rosemount Analytical Inc. A Division of Emerson Process Management
Model 5081FG
DUCT
STACK
GASES
PRESSURE
REGULATOR
FLOWMETER
OPTIONAL
ADAPTER
PLATE
4-20 mA SIGNAL
37240003
MODEL 5081
TRANSMITTER
OXYGEN
PROBE
INSTRUMENT
AIR SUPPLY
(REFERENCE AIR)
Figure 1-3. Typical System Installation
A source of instrument air is required at the
oxygen probe for reference air use. Since
the Two-Wire In Situ Oxygen Analyzer is
equipped with an in-place calibration fea-
ture, provisions should be made for con-
necting calibration check gas tanks to the
oxygen probe during calibration.
If the calibration check gas bottles are to be
permanently connected, a check valve is
required next to the calibration fittings on
the integral electronics.
This check valve is to prevent breathing of
calibration check gas line and subsequent
flue gas condensation and corrosion. The
check valve is in addition to the stop valve
in the calibration check gas kit.
NOTE
The electronics of the Model 5081
Transmitter is rated NEMA 4X (IP65)
and is capable of operating at tem-
peratures up to 65°C (149°F).
Retain the packaging in which the
Rosemount Analytical Two-Wire In
Situ Oxygen Analyzer arrived from the
factory in case any components are to
be shipped to another site. This pack-
aging has been designed to protect
the product.