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Reference Manual
00809-0400-4881, Rev AA
July 2018
Rosemount
TM
OCX 8800
Oxygen and Combustibles
Transmitter
Hazardous Location Transmitter with Remote Electronics
Reference Manual
00809-0400-4881, Rev AA
July 2018
OCX 8800
TOC-2
Table of Contents
Essential Instructions ........................................................................................ i
Preface ............................................................................................................... ii
Definitions .......................................................................................................... ii
Symbols .............................................................................................................. ii
SECTION 1
Description and
Specifications
Component Checklist ................................................................................... 1-1
System Overview .......................................................................................... 1-1
Specifications ..............................................................................................1-12
SECTION 2
Installation
Mechanical
Installation ...................................................................................................... 2-2
Electrical Installation ..................................................................................... 2-8
Pneumatic Installation ................................................................................2-14
Initial Startup ................................................................................................2-20
SECTION 3
Configuration and
Startup
Verify Installation ........................................................................................... 3-1
Initial Power Up ............................................................................................. 3-3
Set Test Gas Values .................................................................................... 3-4
OCX 8800 Reset Procedure ....................................................................... 3-4
SECTION 4
Using HART
Communications
Overview ........................................................................................................ 4-1
Field Communicator Signal Connections .................................................. 4-1
Field Communicator PC Connections ........................................................ 4-4
HART Menu Tree .......................................................................................... 4-5
D/A Trim Procedures .................................................................................... 4-9
SECTION 5
Calibration
Overview ........................................................................................................ 5-1
Fully Automatic Calibration .......................................................................... 5-1
Operator - Initiated Autocalibration ............................................................ 5-3
Manual Calibration ........................................................................................ 5-3
SECTION 6
Maintenance and Service
Overview ........................................................................................................ 6-1
OCX 8800 Removal
and Installation .............................................................................................. 6-1
OCX with
Remote Electronics ................................................................................. 6-2
Repair Sensor Housing ................................................................................ 6-8
Sensor Housing Disassembly ............................................................... 6-8
Sensor Housing Assembly .................................................................. 6-18
Repair Electronics Housing ...................................................................... 6-28
Electronics Housing Disassembly ..................................................... 6-28
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July 2018
OCX 8800
Electronics Housing Assembly ........................................................... 6-30
Replace Tube Fittings ................................................................................6-34
Remove Tube Fittings ..........................................................................6-34
Install Tube Fittings ...............................................................................6-35
SECTION 7
Troubleshooting
Overview ........................................................................................................ 7-1
Grounding ................................................................................................. 7-1
Electrical Noise ........................................................................................ 7-1
Electrostatic Discharge........................................................................... 7-1
Total Power Loss .................................................................................... 7-2
Diagnostic Alarms ......................................................................................... 7-2
Fault Isolation ................................................................................................ 7-3
Alarm Relay Events ....................................................................................7-11
SECTION 8
Replacement Parts
Sensor Housing ............................................................................................. 8-2
Electronics Housing ...................................................................................... 8-6
O2 Cell and Heater Strut Assembly ........................................................... 8-9
APPENDIX A
Safety Data
Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2
Safety Data Sheet for Ceramic Fiber Products . . . . . . . . . . . . . . . . . A-24
High Pressure Gas Cylinders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-30
Atex Clarification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-31
APPENDIX B
SPA with HART Alarm
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1
Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-2
Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-2
APPENDIX C
Return of Materials
Returning Material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .C-1
Reference Manual
00809-0400-4881, Rev AA
July 2018
OCX 8800
TOC-2
ESSENTIAL
INSTRUCTIONS
Rosemount OCX 8800
Oxygen and Combustibles
Transmitter
READ THIS PAGE BEFORE PROCEEDING!
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. The
following instructions MUST be adhered to and integrated into your safety
program when installing, using, and maintaining Emerson’s Rosemount
products. 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.
If you do not understand any of the instructions, contact your
Emerson representative for clarification.
Follow all warnings, cautions, and instructions marked on and
supplied with the product.
Inform and educate your personnel in the proper installation,
operation, and maintenance of the product.
Install your equipment as specified in the Installation Instructions
of the appropriate Instruction Manual and per applicable local and
national codes. Connect all products to the proper electrical and
pressure sources.
To ensure proper performance, use qualified personnel to install,
operate, update, program, and maintain the product.
When replacement parts are required, ensure that qualified people use
replacement parts specified by Emerson. Unauthorized parts and
procedures can affect the product's performance, place the safe
operation of your process at risk, and VOID YOUR WARRANTY.
Look-alike substitutions may result in fire, electrical hazards, or
improper operation.
Ensure that all equipment doors are closed and protective covers
are in place, except when maintenance is being performed by
qualified persons, to prevent electrical shock and personal injury.
The information contained in this document is subject to change without
notice.
If a Model 275/375 Universal HART
®
Communicator is used with this unit, the software
within the Model 275/375 may require modification. If a software modification is required,
please contact your local Emerson Service Group or National Response Center at 1-800-
654-7768.
Reference Manual
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July 2018
OCX 8800
PREFACE The purpose of this manual is to provide a comprehensive understanding of
the OCX 8800 components, functions, installation, and maintenance.
We recommend that you thoroughly familiarize yourself with the Introduction
and Installation sections before installing your transmitter.
The introduction presents the basic principles of the transmitter along with its
performance characteristics and components. The remaining sections contain
detailed procedures and information necessary to install and service the
transmitter.
Before contacting Emerson concerning any questions, first consult this
manual. It describes most situations encountered in your equipment's
operation and details necessary action.
DEFINITIONS The following definitions apply to WARNINGS, CAUTIONS, and NOTES
found throughout this publication.
NOTE
Highlights an essential operating procedure, condition, or statement.
SYMBOLS
: EARTH (GROUND) TERMINAL
: PROTECTIVE CONDUCTOR TERMINAL
: RISK OF ELECTRICAL SHOCK
: WARNING: REFER TO INSTRUCTION BULLETIN
NOTE TO USERS
The number in the lower right corner of each illustration in this publication is a
manual illustration number. It is not a part number, and is not related to the
illustration in any technical manner.
Highlights an operation or maintenance procedure, practice, condition, statement, etc. If not
strictly observed, could result in injury, death, or long-term health hazards of personnel.
Highlights an operation or maintenance procedure, practice, condition, statement, etc. If not
strictly observed, could result in damage to or destruction of equipment, or loss of
effectiveness.
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OCX 8800
ii
Section 1 Description and Specifications
Component Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 1-1
System Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 1-1
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 1-12
COMPONENT
CHECKLIST
A typical OCX 8800 Oxygen/Combustibles Transmitter package should
contain the items shown in Figure 1-1.
Use the product matrix in Table 1-1 at the end of this section to verify your
order number. The first part of the matrix defines the model. The last part
defines the various options and features of the OCX 8800. Check the model
number 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. A list of accessories
for use with the OCX 8800 is provided in Table 1-2.
SYSTEM OVERVIEW Scope
This Instruction Manual supplies details needed to install, startup, operate,
and maintain the OCX 8800. Signal conditioning electronics outputs separate
4-20 mA signals representing oxygen (O
2
) and combustibles (COe) values.
This information, plus additional details, can be accessed with the HART
Model 275/375 handheld communicator or Rosemount AMS software.
System Description
The OCX 8800 is designed to measure oxygen and combustible
concentrations in flue gas temperatures up to 2600°F (1427°C). Electrical
connections, power and communications are made through two 3/4 NPT ports
in the flameproof electronics enclosure using fittings and cables provided by
the customer. Cable installation must meet NEC, IEC and/or other applicable
national or local codes for Class I, Zone 1, Group IIB +H2 T3/T6 permanently
mounted equipment. The transmitter is close coupled to the process and
requires minimal sample conditioning requirements.
Reference Manual
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July 2018
OCX 8800
1
4
6
MAN 4275A00
English
October 1994
HART Communicator
o
FISHER
-ROSEMOUNT
TM
Figure 1-1. Typical System Package
5
1.
Instruction Manual
2.
Field Communicator Package (optional)
3.
Adapter Plate with Mounting Hardware and Gasket
4.
Reference Air and Calibration Set
5.
Blowback Hardware (optional)
6.
OCX 8800 with Remote Electronics
2
3
37390076
1-3
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OCX 8800
The equipment measures oxygen percentage by reading the voltage
developed across a heated electrochemical cell, which consists of a small
yttria-stabilized, zirconia disc. Both sides of the disc are coated with porous
metal electrodes. When operated at the proper temperature, the millivolt
output of the cell is given by the following Nernst equation:
EMF = KT log10 (P
1
/P
2
) + C
Where:
1.
P
2
is the partial pressure of the oxygen in the measured gas on one side
of the cell.
2.
P
1
is the partial pressure of the oxygen in the reference air on the
opposite side of the cell.
3.
T is the absolute temperature.
4.
C is the cell constant.
5.
K is an arithmetic constant.
NOTE
For best results, use clean, dry instrument air (20.95% oxygen) as the
reference air.
When the cell is at operating temperature and there are unequal oxygen
concentrations across the cell, oxygen ions will travel from the high oxygen
partial pressure side to the low oxygen partial pressure side of the cell. The
resulting logarithmic output voltage is approximately 50 mV per decade. The
output is proportional to the inverse logarithm of the oxygen concentration.
Therefore, the output signal increases as the oxygen concentration of the
sample gas decreases. This characteristic enables the OCX 8800 to provide
exceptional sensitivity at low oxygen concentrations.
The OCX 8800 measures net oxygen concentration in the presence 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 percentage of
oxygen. The difference will be proportional to the water content of the
sampled gas stream.
The OCX 8800 combustibles sensor is a catalytic sensor consisting of two
Resistance Devices (RTD). One RTD is the reference element covered with
an inert coating. The other RTD element is active, coated with a catalyst. As
the sample gases flow by the sensor, the combustible gases oxidize on the
surface of the active element. The oxidation that occurs produces heat and a
temperature rise in the active element. The temperature difference produces
a resistance relationship between the two elements that is directly
proportional to the concentration of combustibles in the sample gases.
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July 2018
OCX 8800
The catalyst is specifically designed to detect carbon monoxide (CO), but the
sensor responds to other combustible gases. The sensor is calibrated using
CO, thus the output should be expressed in terms of CO. However, since the
sensor detects other combustible gases, the output cannot just be labeled
CO. The response of the sensor to other combustible gases gives an output
that is equivalent to the sensor detecting CO. The term COe is used in this
manual to describe the sensor output. This term indicates that the sensor is
calibrated in terms of CO, and that the sensor output is equivalent to CO but
not specific to CO.
Dilution air is provided to the COe sensor to ensure there is adequate oxygen
to fully oxidize any combustible gases regardless of the concentration of
oxygen in the process.
System Configuration
Transmitters are available in four lengths, giving the user the flexibility to use
a penetration appropriate to the size of the stack or duct. The length options
are 18 in. (457 mm), 3 ft (0.91 m), 6 ft (1.83 m), or 9 ft (2.7 m). Probes are
available in three material options, 316L stainless steel, inconel 600, and
ceramic to accommodate higher temperatures.
The electronics are contained in a separate housing from the sensors. The
electronics housing may be mounted up to 150 feet away from the sensor
housing.
The electronics control both sensor temperatures and provide individual 4-20
mA isolated outputs that are proportional to the measured oxygen and
combustibles concentrations. The power supply can accept voltages of 100 to
240 VAC and 50 to 60 Hz. The electronics accepts millivolt signals generated
by the sensors and produces the outputs to be used by remotely connected
devices. The outputs are isolated 4-20 mA linearized currents. Refer to
Section 3, Configuration and Startup for specific instructions upon initial
power up.
System Features
1.
The O
2
cell output voltage and sensitivity increase as the oxygen
concentration decreases.
2.
HART communication is standard. To use the HART capability, you
must have either:
a.
Model 275/375 Field Communicator.
b.
AMS software for the PC.
3.
Oxygen cell and heater/thermocouple assembly are field replaceable.
4.
Electronics are automatically configured for line voltages from 100 to
240 VAC.
1-5
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OCX 8800
5.
An operator can calibrate and diagnostically troubleshoot the OCX 8800
using the HART Interface. Each of the OCX 8800's 4-20 mA output lines
transmit an analog signal proportional to oxygen or combustible levels
detected. The HART output is superimposed on the oxygen 4-20 mA
output line only. This information can be accessed through the following:
Model 275/375 Handheld Communicator - The handheld
communicator requires Device Description (DD) software specific
to the OCX 8800. The DD software will be supplied with many
Model 275/375 units, but can also be programmed into existing
units at most Emerson service offices. Refer to Section 4, Using
HART Communications, for additional information.
Personal Computer (PC) - The use of a personal computer
requires AMS software available from Emerson.
Selected Distributed Control Systems - The use of distributed
control systems requires input/output (I/O) hardware and AMS
software which permit HART communications.
6.
Optional Blowback System. The blowback system periodically blows
instrument air back through the sample line filter and out the sample
tube. This clears out particulate and keeps the sample line filter from
clogging.
System Operation
Figure 1-2 shows the relationship between the components of the OCX 8800.
The sensors and the electronics are contained in separate housings. The
sensor housing and probe mounts to a duct or process wall so that the probe
protrudes into the flue gas stream. An air powered eductor continuously pulls
samples of the process flue gas through the probe to a chamber in front of the
sensor housing where the sample passes the O
2
sensor and continues on to
the COe sensor. Dilution air is provided to the COe sensor and reference air
to the O
2
sensor. After the gas sample flows past the O
2
sensor and through
the COe sensor, it is drawn through the eductor where it mixes with the
eductor air and exits through exhaust back into the system. The electronics
housing contains the CPU and HART boards which convert the sensor inputs
into 4-20 mA analog output signals. The CPU can also initiate and perform
calibrations. Three test gasses and instrument air can be turned on and off by
solenoids. Test gas flow to the sensors is regulated by a flow meter between
the electronics and sensor housings. Instrument air is separated into eductor
air, reference air, and dilution air. The instrument air solenoid does not allow
air flow until the heaters are up to temperature. This minimizes the amount of
sampled process flue gas being pulled into cold sensors causing
condensation.
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July 2018
OCX 8800
Low O
2
Test Gas
COe
Combustibles
Sensor
CPU
High O
2
Test Gas
Optional
Test Gas
Solenoids
CO
Test Gas
Instrument Air
Solenoid
Instrument
Air
Figure 1-2. System Operation Diagram
SENSOR
HOUSING
ELECTRONICS
HOUSING
Sample
Gas
Probe
O
2
Sensor
Eductor
HART
Board
Power
Supply
Flow Meter
7 scfh
Exhaust
Eductor Air
Reference Air
Dilution Air
Flow Meter
50 cc/min.
(0.1 scfh)
Handling the OCX 8800
System Considerations
Prior to installing your OCX 8800, make sure you have all the components
necessary to make the system installation. Ensure all the components are
properly integrated to make the system functional.
It is important that printed circuit boards and integrated circuits are handled only when
adequate antistatic precautions have been taken to prevent possible equipment damage.
The OCX 8800 is designed for industrial application. Treat each component of the system
with care to avoid physical damage. The probe may contain components made from
ceramics, which are susceptible to shock when mishandled.
37390001
1-7
Reference Manual
00809-0400-4881, Rev AA
July 2018
OCX 8800
After verifying that you have all the components, select mounting locations
and determine how each component will be placed in terms of available line
voltage, ambient temperatures, environmental considerations, convenience,
and serviceability. Figure 1-3 shows a typical system wiring. Simplified
installations for the OCX 8800 are shown in Figure 1-4. Figure 1-6 shows the
dimensions for the optional sample tube support.
A source of instrument air is required at the OCX 8800 for reference air,
dilution air, and eductor air. Since the OCX 8800 is equipped with an in-place
calibration feature, provision should be made for connecting test gas tanks to
the OCX 8800 when it is to be calibrated.
NOTE
The electronics module is designed to meet NEMA 4 (IP66) and the electronic
components are rated to temperatures up to 185°F (8 C).
Retain packaging in which the unit arrived from the factory in case any
components are to be shipped to another site. This packaging has been
designed to protect the product.
Figure 1-3. OCX 8800 HART
Connections and AMS Application
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July 2018
OCX 8800
Figure 1-4. Typical System
Installation
Gases
Duct
OCX 8800 with
REMOTE
ELECTRONICS
Heater
Power Cable
[up to 150 ft (46 m)]
Stack
Signal Cable
[up to 150 ft (46 m)]
Test Gas
Flow Meter
Dilution
Air
Flow
4-20 mA Outputs
(2 Twisted Pairs)
Line Voltage
Instrument Air
Meter
Pressure
Regulator
Supply
(Reference Gas)
High O
2
Test Gas
Low O
2
Test Gas
CO Test Gas
Figure 1-5. OCX 8800 HART
37390064
1-9
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July 2018
OCX 8800
Connections and AMS Application
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July 2018
OCX 8800
1-10
Figure 1-6. Sample Tube Support
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July 2018
OCX 8800
1-11
Figure 1-7. Typical System
Installation
Gases
Duct
OCX 8800 with
REMOTE
ELECTRONICS
Heater
Power Cable
[up to 150 ft (46 m)]
Stack
Signal Cable
[up to 150 ft (46 m)]
Test Gas
Flow Meter
Dilution
Air
Flow
4-20 mA Outputs
(2 Twisted Pairs)
Line Voltage
Instrument Air
Meter
Pressure
Regulator
Supply
(Reference Gas)
High O
2
Test Gas
Low O
2
Test Gas
CO Test Gas
37390064
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OCX 8800
1-12
Blowback Air (optional) Clean, dry, instrument-quality air (20.95% O
2
), regulated ≥ 60 psi
(413 kPa) or greater and ambient temperature of ≥ 0 °F (-18 °C)
SPECIFICATIONS Hazardous Area OCX
Specifications
Net O
2
Range 0-1% to 0-40% O
2
, fully field selectable
Combustibles 0-1000 ppm to 0-5%, fully field selectable
Accuracy
Oxygen ± 0.75% of reading or 0.05% O
2
(whichever is greater)
Combustibles ± 2% range
System Response to
Test Gas
Oxygen 10 sec T90
Combustibles 25 sec T90
Temperature Limits
Process 32°to 2600°F (0° to 1427°C)
Sensors Housing -40°to 21F (-40°to 100°C), ambie nt
Electronics Housing -40°to 14F (-40°to 65°C), ambient
-40°to 185°F (-40°to 85°C), internal - operating temperature of
electronics inside instrument housing, as measured by a HART
communicator or AMS software
Nominal and Approximate
Shipping Weights
18 in. (457 mm)
probe package
3 ft (0.91 m) probe
package
6 ft (1.83 m) probe
package
9 ft (2.74 m) probe
package
Mounting and Mounting
Positions
54 lbs (20 kg)
55 lbs (20.5 kg)
57 lbs (21 kg)
59 lbs (22 kg)
Sensors Housing Flange
Electronics Housing Wall/Pipe
Materials
Probes 316L stainless steel - 1300°F (70C)
Inconel 600 - 1832°F (1000°C)
Ceramic - 2600°F (1427°C)
Enclosures Low-copper aluminum
Calibration Semi-automatic or automatic
Calibration Gas Mixtures
Recommended
(Ref. test gas bottles
kit #1A99119G04)
0.4
% O
2
, Balance N2
8% O
2
, Balance N2
1000 ppm CO, Balance Air
Calibration Gas Flow 7 scfh (3.3 l/m)
Reference Air 2 scfh (1 l/m), clean, dry instrument-quality air (20.95% O
2
),
regulated to 45 psi (310 kPa)
Eductor Air 5 scfh (2.5 l/m), clean, dry, instrument-quality air 20.95% O
2
),
regulated to 45 psi (310 kPa)
Dilution Air 0.1 scfh (0.5 l/m), clean, dry, instrument-quality air (20.95% O
2
)
regulated to 45 psi (310 kPa)
Table continued on next page
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July 2018
OCX 8800
1-13
Sensors Housing
NEMA 4, IP66 with fitting and pipe on reference exhaust port to
clean, dry atmosphere, two 3/4-14 NPT conduit ports
Specifications
Electronics Housing NEMA 4, IP66 with fitting and pipe on reference exhaust port to
clean, dry atmosphere, two 3/4-14 NPT conduit ports
Electrical Noise EN 61326-1, Class A
Certifications Sensor Housing
0344 II 2 G
KEMA 04 ATEX 2308
C US
2005.1602514
APPROVED
EEx d IIB+H2 T3
Electronics Housing
0344 II 2 G
KEMA 04 ATEX 2308
EEx d IIB+H2 T6 IP66
CLASS 1, ZONE 1
Ex d IIB+H2 T3
AEx D IIB+H2 T3
TYPE 4 / IP66
C US
2005.1602514
CLASS 1, ZONE 1
Ex d IIB+H2 T6
AEx D IIB+H2 T6
TYPE 4 / IP66
CLASS 1, ZONE 1
AEx D IIB+H2 T3
TYPE 4 / IP66
APPROVED
CLASS 1, ZONE 1
AEx D IIB+H2 T3
TYPE 4 / IP66
Line Voltage Universal 100 to 240 VAC ±10%, 50 to 60 Hz, no switches or
jumpers required, 3/4-14 NPT conduit port
Pollution Degree 2
Over Voltage Category II
Relative Humidity 5 to 95% (non-condensing)
Isolated Output
Oxygen 4-20 mAdc, 950 ohm maximum, with HART capability
Combustibles 4-20 mAdc, 950 ohm maximum
Alarm Alarm output relay - dry contact, form C, 30 mA, 30VDC capacity
Power Consumption 750 W maximum
NOTE
All static performance characteristics are with operating variables constant. Specifications subject to change
without notice.
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July 2018
OCX 8800
1-14
Table 1-1. Product Matrix - Hazardous Area OCX 8800
OCX88C
O
2
/Combustibles Transmitter - Flameproof
Code
Probe Length and Material
00
No Probe or Exhaust Tube
11
18 in. (457 mm) 316 SST
up to 1300°F (704°C)
21
18 in. (457 mm) Inconel 600
up to 1832°F (1000°C)
(4)
31
18 in. (457 mm) Ceramic
up to 2600°F (1427°C)
12
3 ft (0.91 m) 316 SST
up to 1300°F (704°C)
22
3 ft (0.91 m) Inconel 600
up to 1832°F (1000°C)
(4)
32
3 ft (0.91 m) Ceramic
up to 2600°F (1427°C)
13
6 ft (1.83 m) 316 SST
up to 1300°F (704°C)
23
6 ft (1.83 m) Inconel 600
up to 1832°F (1000°C)
(4)
14
9 ft (2.7 m) 316 SST
up to 1300°F (704°C)
24
9 ft (2.7 m) Inconel 600
up to 1832°F (1000°C)
(4)
Code
Probe Mounting Assembly
10
(ANSI 2 in. 150 lb) 6" dia. flange, 4.75" BC with 4 x 0.75" dia. holes
20
(DIN) 185 mm dia. flange, 145 mm BC with 4 x 18 mm dia. holes
Code
Mounting Hardware - Stack Side
0
No Adapter Plate (“0” must be chosen under “Mounting Adapter - Probe Side” below)
1
New Installation - Square weld plate with studs
2
Model 218/240 Mounting Plate (with Model 218/240 Shield Removed)
3
Existing Model 218/240 Support Shield
4
Special Mounting
(1)
5
Model 132 Adapter Plate
Code
Mounting Hardware - Probe Side
0
No Adapter Plate
1
Probe Only (ANSI)
2
Probe Only (DIN)
Code
Electronics Housing - Communications
H1
HART Communications
(2)
H2
HART Communications with LOI
H3
HART Communications with Calibration Solenoids
(2)
H4
HART Communications with LOI and Calibration Solenoids
Code
Electronics Mounting
02
Remote Electronics and no cable
Code
Accessories
00
None
01
Flow meters & Ref. Air Set
02
In-Situ Filter (Stainless Steel only)
(3)
03
In-Situ Filter (SST), Flow meters & Ref. Air Set
(3)
11
Flow meters, and Ref. Air Set with Blowback
12
In-Situ Filter (SST) with Blowback
(3)
13
In-Situ Filter (SST), Flow meters & Ref. Air Set with Blowback (3)
OCX88C
11
10
1
1
H2
02
02
Example
NOTES:
(1)
Provide details of the existing mounting plate as follows:
Plate with studs
Bolt circle diameter, number, and arrangement of studs, stud thread, stud height above mounting plate.
Plate without studs
Bolt circle diameter, number, and arrangement of holes, thread, depth of stud mounting plate with accessories.
(2)
If the LOI is not implemented, remote access and functionality available via HART Communications (Model 275/375 Handheld Communicator)
with Oxygen/Combustibles Device Description (DD) required.
(3)
For use with stainless steel sample tube only.
(4)
For high temperature applications that require a filter, please order 1A99762H03 separately.
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Rosemount OCX 8800 O2 Combustibles Transmitter Hazardous Area Omaniku manuaal

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Hapnikuseadmed
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