Emerson Rosemount OCX 8800 Manuel utilisateur
Quick Start Guide
00825-0100-4880, Rev AE
July2023
Rosemount™ OCX8800 Oxygen and
Combustibles Transmitter
with 4–20 mA HART® Protocol
Safety information
Emerson designs, manufactures, and tests its products to meet many national and
international standards. Because these instruments are sophisticated technical products, you
must properly install, use, and maintain them to ensure they continue to operate within
their normal specifications. You must adhere to the following instructions and integrate them
into your safety program when installing, using, and maintaining Emerson's Rosemount
products.
WARNING
Failure to follow the proper instructions may cause any one of the following situations to
occur: loss of life, personal injury, property damage, damage to this instrument, and
warranty invalidation.
Read all instructions prior to installing, operating, and servicing the product.
WARNING
Install equipment as specified in the installation instructions of the appropriate manual and
per local and national codes. connect all products to the proper electrical and pressure
sources.
WARNING
Physical access
Unauthorized personnel may potentially cause significant damage to and/or
misconfiguration of end users’ equipment. This could be intentional or unintentional and
needs to be protected against.
Physical security is an important part of any security program and fundamental to protecting
your system. Restrict physical access by unauthorized personnel to protect end users' assets.
This is true for all systems used within the facility.
Symbols
Earth (ground) terminal
Protective conductor terminal
Risk of electrical shock
Refer to manual.
Contents
Description and specifications................................................................................................... 5
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2 Emerson.com/Rosemount
Installation.................................................................................................................................... 6
Configuration and startup........................................................................................................ 30
Using the local operator interface (LOI)..................................................................................38
Calibration...................................................................................................................................41
Product certifications................................................................................................................ 49
Declaration of Conformity........................................................................................................ 53
China RoHS table........................................................................................................................55
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4 Emerson.com/Rosemount
1 Description and specifications
1.1 Component checklist
Check the model number of your Rosemount OCX8800 against the
transmitter features and options, making sure options specified by
this number are on or included with the unit. Use this complete
model number for any correspondence with Emerson.
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Quick Start Guide 5
2 Installation
2.1 Product safety
WARNING
Safety instructions
Failure to follow the safety instructions could result in serious injury
or death.
Before installing this equipment, read Safety information.
WARNING
Hazardous areas
The Rosemount OCX88A can be installed in general purpose areas
only. The Rosemount Xi Advanced Electronics can be installed in
general purpose areas only.
Do not install the Rosemount OCX88A in hazardous areas.
Do not install the Rosemount Xi in hazardous areas or in the
vicinity of flammable liquids.
WARNING
Hazardous areas
The Rosemount OCX88C may explode in hazardous areas.
All cable entry devices and blanking elements for unused
apertures must be certified flameproof, suitable for the conditions
of use, and properly installed.
The sensor housing must not be mounted to any surface or flange
that exceeds 383 °F (195 °C).
The sample entering the sensor housing must not exceed 383 °F
(195 °C).
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6 Emerson.com/Rosemount
WARNING
Electrical shock
Failure to install covers and ground leads could result in serious
injury or death.
Install all protective equipment covers and ground leads after
installation.
If external loop power is used, the power supply must be a safety
extra low voltage (SELV) type.
Note
Plug all unused ports on the probe housing and Rosemount Xi
enclosure with a suitable filling.
2.2 Mechanical installation
2.2.1 Select a location
The location of the transmitter in the stack or flue is important
for maximum accuracy in the oxygen analyzing process. You must
position the probe so the gas it measures is representative of the
process.
For best results, position the transmitter near the center of the
duct (40 to 60 percent insertion). Longer ducts may require several
transmitters since the oxygen and combustibles can vary due to
stratification. A point too near the wall of the duct or the inside radius
of a bend may not provide a representative sample because of the
very low flow conditions. Select the sensing point so the process gas
temperature falls within the range of probe material used.
CAUTION
Damage to the electronics may result.
Do not allow the temperature of the electronics housing to exceed
185 °F (85 °C).
CAUTION
Failure to connect the pneumatic lines can allow the flow of
contaminants into the transmitter's ports.
Whenever a positive stack pressure exists at the installation site, be
sure to connect all pneumatic lines prior to installing the transmitter
in the stack or ductwork.
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Procedure
1. Check the flue or stack for holes and air leakage.
The presence of this condition will substantially affect the
accuracy of the oxygen and combustibles readings. Make the
necessary repairs or install the transmitter upstream of any
leakage.
2. Ensure the area is clear of internal and external obstructions
that will interfere with installation and maintenance access to
the transmitter.
Allow adequate clearance for the removal of the transmitter.
2.2.2 Install the transmitter
Procedure
1. Ensure all components are available to install the transmitter.
You can install the transmitter intact as it is received.
2. Weld or bolt adapter plate onto the duct.
3. Use the pipe or wall mounting hardware to mount a remote
electronics housing. Choose a location that does not exceed
the length of the electronics cable ordered.
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8 Emerson.com/Rosemount
4. Ensure the conduits drop vertically from the transmitter and
the conduit is routed below the level of the conduit ports on
the housing to form a drip loop.
Drip loops minimize the possibility that moisture will damage
the electronics.
Figure 2-1: Installation with drip loops
A. Duct wall
B. Conduit drip loops
5. Where a positive stack pressure exists at the installation site,
connect all pneumatic lines prior to installing the transmitter
in the stack or ductwork.
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Quick Start Guide 9
CAUTION
If process temperatures will exceed 392 °F (200 °C), use anti-
seize compound on stud threads to ease future removal of the
transmitter.
6. Insert sample and exhaust tubes through the opening in the
mounting flange and bolt the unit to the flange.
CAUTION
Uninsulated stacks or ducts may cause ambient temperatures
in the electronics housing to exceed 185 °F (85 °C) and
damage the electronics.
If insulation is removed to access the duct for mounting the
transmitter, make sure to replace the insulation afterward.
7. If insulation is removed to access the duct for mounting the
transmitter, make sure to replace insulation afterward.
2.3 Electrical installation
All wiring must conform to local and national codes. Figure 2-2 shows
factory wired solenoid power connections.
WARNING
Failure to install covers and ground leads could result in serious
injury or death.
Install all protective equipment covers and safety ground leads after
installation.
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10 Emerson.com/Rosemount
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6
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