Emerson Process Management OCX 8800 User Manual

Instruction Manual

IM-106-880C, OI
September 2009

Hazardous Area
OCX 8800
Oxygen/Combustibles Transmitter

http://www.raihome.com

Instruction Manual

IM-106-880C, OI
September 2009

Hazardous Area OCX 8800

Table of Contents

Essential Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . i

SECTION i
Introduction

SECTION 1
Description and
Specifications

SECTION 2
Installation

SECTION 3
Configuration and
Startup

Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii

Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii

Symbols. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iv

Component Checklist. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

System Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12

Mechanical Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Electrical Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8

Pneumatic Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13

Initial Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-24

Verify Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Initial Power Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

Set Test Gas Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

Calibration Solenoids. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

Blowback Feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

Calibration Verify Feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9

Calibration Tolerance Feature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11

COe Purge / Zero Feature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12

OCX 8800 Reset Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14

SECTION 4
Using the LOI

SECTION 5
Calibration

http://www..raihome.com

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Display Orientation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

LOI Controls. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

LOI Key Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

LOI Status Codes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

LOI Menu Tree. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

Fully Automatic Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

Operator - Initiated Autocalibration . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

Manual Calibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4

D/A Trim Procedures - LOI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-12

D/A Trim Procedures - HART . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-14

Hazardous Area OCX 8800

Instruction Manual

IM-106-880C, OI
September 2009

SECTION 6
Field Communicator

SECTION 7
Foundation Fieldbus

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

Field Communicator Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

Off-Line and On-Line Operations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4

Hart Menu Tree . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5

Fieldbus Menu Tree. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-9

Foundation Fieldbus Technology. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1

Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1

Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2

Instrument-Specific Function Blocks . . . . . . . . . . . . . . . . . . . . . . . 7-4

Network Communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-4

OCX Function Blocks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-6

Resource Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-6

PlantWeb Alerts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-6

Mapping of PWA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-7

PWA Simulate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-10

Fieldbus/PWA Simulate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-10

Configure Simulation with the Model 375 Field Communicator . .7-12

Support Resource Block Errors . . . . . . . . . . . . . . . . . . . . . . . . . . 7-12

Transducer Block. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-13

Transducer Block Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-13

Transducer Block Enumerations . . . . . . . . . . . . . . . . . . . . . . . . . 7-17

Transducer Block Channel Assignments for AI Blocks . . . . . . . . 7-21

Transducer Block Channel Status . . . . . . . . . . . . . . . . . . . . . . . . 7-22

Transducer Block Simulate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-22

Support Transducer Block Errors. . . . . . . . . . . . . . . . . . . . . . . . . 7-22

Analog Input (AI) Function Block. . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-23

Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-23

Simulation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-25

Filtering. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-26

Signal Conversion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-26

Block Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-27

Modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-28

Alarm Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-28

Status Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-29

Advanced Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-30

Application Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-30

Application Examples. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-30

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-34

Proportional/Integral/Derivative (PID) Function Block. . . . . . . . . . . . 7-35

Setpoint Selection and Limiting . . . . . . . . . . . . . . . . . . . . . . . . . . 7-39

Filtering. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-40

Feedforward Calculation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-40

Tracking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-40

Output Selection and Limiting. . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-40

Bumpless Transfer and Setpoint Tracking . . . . . . . . . . . . . . . . . . 7-40

PID Equation Structures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-41

Reverse and Direct Action . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-41

Reset Limiting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-41

Block Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-41

Modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-42

Alarm Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-43

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Instruction Manual

IM-106-880C, OI
September 2009

Hazardous Area OCX 8800

Status Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-43

Application Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-44

Application Examples. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-45

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-50

Arithmetic (ARTHM) Function Block . . . . . . . . . . . . . . . . . . . . . . . . . 7-51

Block Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-53

Modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-54

Alarm Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-54

Block Execution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-54

Status Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-55

Application Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-55

Advanced Topics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-56

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-58

Input Selector (ISEL) Function Block. . . . . . . . . . . . . . . . . . . . . . . . . 7-58

Block Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-60

Modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-60

Alarm Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-61

Block Execution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-61

Status Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-61

Application Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-62

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-63

Operation with Emerson Process Management DeltaV . . . . . . . . . . 7-64

About AMS and DeltaV Software . . . . . . . . . . . . . . . . . . . . . . . . . 7-64

SECTION 8
Troubleshooting

SECTION 9
Maintenance and Service

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1

Grounding. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1

Electrical Noise. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1

Electrostatic Discharge. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1

Total Power Loss . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2

Diagnostic Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2

Fault Isolation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3

Alarm Relay Events. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-11

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1

OCX 8800 Removal and Installation . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1

OCX with Integral Electronics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-2

OCX with Remote Electronics . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-5

Repair Sensor Housing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-10

Sensor Housing Disassembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-10

Sensor Housing Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-20

Repair Electronics Housing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-29

Electronics Housing Disassembly . . . . . . . . . . . . . . . . . . . . . . . . 9-29

Electronics Housing Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-31

Replace Tube Fittings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-35

Remove Tube Fittings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-35

Install Tube Fittings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-36

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Hazardous Area OCX 8800

Instruction Manual

IM-106-880C, OI
September 2009

SECTION 10
Replacement Parts

APPENDIX A
Safety Data

APPENDIX B
SPA with HART Alarm

APPENDIX C
Return of Materials

Sensor Housing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-2

Electronics Housing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-6

O2 Cell and Heater Strut Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . 10-9

Safety Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-2

Safety Data Sheet for Ceramic Fiber Products . . . . . . . . . . . . . . . . .A-24

High Pressure Gas Cylinders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-30

ATEX Clarification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-31

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-1

Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-1

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-2

Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-2

Returning Material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .C-1

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Instruction Manual

IM-106-880C, OI
September 2009

ESSENTIAL
INSTRUCTIONS

Hazardous Area OCX 8800

Hazardous Area
Oxygen/Combustibles Transmitter

READ THIS PAGE BEFORE PROCEEDING!

Emerson Process Management designs, manufactures and tests its prod uct s
to meet many national and international standards. Because these
instruments are sophisticated technical prod ucts, you MUST properly inst all,
use, and maintain them to ensure they continue to operate within their
normal specifications. The following instructions MUST be adhered to
integrated into your safety program when installing, using, and maintaining
Emerson’s Rosemount Analytical 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
product.

• If you do not understand any of the instructions, contact your
Emerson Process Management representative for clarification.

• Follow all warnings, cautions, and instructions
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 pe r a pplicable loca l and
national codes. Connect all products to the proper electrical and

pressure sources.

• To ensure proper performance, use qualified personnel
operate, update, program, and maintain the product.

• When replacement parts are required, ensure that qualified people use
replacement parts specified by Emerson Process Management.
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.

prior to installing, operating, and servicing the

marked on and

to install,

and

http://www..raihome.com

If a Model 375 Field Communicator is used with this unit, the software within the Model 375
may require modification. If a software modification is required, please contact your local
Emerson Process Management Service Group or National Response Center at
1-800-654-7768.

Hazardous Area OCX 8800

Instruction Manual

IM-106-880C, OI
September 2009

ii

Instruction Manual

IM-106-880C, OI
September 2009

Hazardous Area OCX 8800

Section i Introduction

Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page iii

Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page iii

Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page iv

PREFACE The purpose of this manual is to provide a comprehensive understanding of

the Hazardous Area 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 Process Management 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.

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.

NOTE

Highlights an essential operating procedure, condition, or statement.

http://www..raihome.com

Hazardous Area OCX 8800

SYMBOLS

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.

NOTE

Read this manual before working with the product. For personal and system
safety, and for optimum product performance, make sure you thoroughly
understand the contents before installing, using, or maintaining this product.

Instruction Manual

IM-106-880C, OI
September 2009

NOTE TO USERS

iv

Instruction Manual

IM-106-880C, OI
September 2009

Hazardous Area OCX 8800

Section 1 Description and Specifications

Component Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 1-1

System Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page 1-3

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 1-12

Product Matrix - Hazardous Area OCX 8800 . . . . . . . . . . page 1-14

COMPONENT
CHECKLIST

A typical Hazardous Area OCX 8800 Oxygen/Combustibles Transmitter
package should contain the items shown in Fig ur e 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 Hazardous Area 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 Process
Management. A list of accessories for use with the Hazardous Area OCX
8800 is provided in Table 1-2.

http://www..raihome.com

Hazardous Area OCX 8800

Figure 1-1. Typical System Package

Instruction Manual

IM-106-880C, OI
September 2009

1. Instruction Manual

2. Field Communicator Package (optional)

3. Adapter Plate with Mounting Hardware and Gasket

4. Reference Air and Calibration Set (optional)

5. Blowback Hardware (optional)

6. Hazardous Area OCX 8800 with Remote Electronics

7. Hazardous Area OCX 8800 with Integral Electronics

1-2

Instruction Manual

IM-106-880C, OI
September 2009

SYSTEM OVERVIEW Scope

This Instruction Manual supplies details needed to install, startup, operate,
and maintain the Hazardous Area OCX 8800. Signal conditioning electronics
outputs a digital signal representing oxygen (O
values. This information, plus additional details, can be accessed with the 375
Field communicator or Emerson Process Management AMS software. The
optional local operator interface (LOI) also provides a communications
interface with the electronics.

System Description

The Hazardous Area 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 throug h 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 transm itter is close coupled to
the process and requires minimal sample conditioning requirements.

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:

Hazardous Area OCX 8800

) and combustibles (COe)

2

EMF = KT log10 (P

Where:

1. P

is the partial pressure of the oxygen in the mea sured gas on one side

2

of the cell.

is the partial pressure of the oxygen in the reference air on the

2. P

1

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 Hazardous Area OCX
8800 to provide exceptional sensitivity at low oxygen concentrations.

1/P2

) + C

1-3

Hazardous Area OCX 8800

The Hazardous Area 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 Hazardous Area 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.

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.

Instruction Manual

IM-106-880C, OI
September 2009

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 optio ns
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. When
the transmitter is configured with the integral electronics option the electronics
and sensor housings are mounted as a unit at the stack mounting flange.
When the transmitter is configured with the remote electronics option the
electronics are contained in a separate housing from the sensors. The
electronics housing may be mounted up to 150 feet from the sensor housing.

The electronics control both sensor temperatures and provide output signals
in one of two ways:

1. Individual 4-20 ma isolated outputs that are proportional to the
measured oxygen and combustibles co ncentrations. The oxygen ou tput
also contains HART communication.

2. Single FOUNDATION fieldbus output.

1-4

Instruction Manual

IM-106-880C, OI
September 2009

Hazardous Area OCX 8800

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. Refer to
Section 3, Configuration and Startu p for specific instructions upon initial
power up.

System Features

1. The O
concentration decreases.

2. HART or FOUNDA TION fieldbus communication is st andard. To use this
capability, you must have either:

a. Model 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.

5. An operator can calibrate and diagnostically troubleshoot the
Hazardous Area OCX 8800 in one of two ways:

a. LOI. The LOI is mounted to the end of the electronics module and

b. HART or FOUNDATION fieldbus interface. The Hazardous Area

6. When the transmitter is configured without the LOI an operator must
calibrate and diagnostically troubleshoot the Hazardous Area OCX 8800
using the HART or FOUNDATION fieldbus Interface.

7. Optional Blowback System. The blowba ck sys tem pe rio dic ally 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.

cell output voltage and sensitivity increase as the oxygen

2

allows local communications with the electronics. Refer to Section 4,
Using the LOI, for more information.

OCX 8800's output line transmits a digital signal with the detected
oxygen or combustible levels encoded in a digital format. This
information can be accessed through the following:

• Model 375 Field Communicator - The handheld field
communicator requires Device Description (DD) software specific
to the Hazardous Area OCX 8800. The DD software will be
supplied with many Model 375 units, but can also be
programmed into existing units at most Emerson Process
Management service offices. Refer to Section 6, Field
Communicator, for additional information.

• Personal Computer (PC) - The use of a personal computer
requires AMS software available from Emerson Process
Management.

• Selected Distributed Control Systems - The use of distributed
control systems requires input/output (I/O) hardware and AMS
software which permit HART or FOUNDATION fieldbus
communications.

1-5

Hazardous Area OCX 8800

System Operation

Figure 1-2 shows the relationship between the components of th e Ha zard ou s
Area OCX 8800. The sensors and the electronics are contained in separate
housings. The sensor housing and probe mount s to a d uct or pro c ess 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
sensor and continues on to the COe sensor. Dilution air is provided to the
COe sensor and reference air to the O
past the O
eductor where it mixes with the eductor air and exits through exhaust back
into the system. The electronics housing contains the CPU and
communication boards which convert the sensor inputs into digital output
signals. The CPU can also initiate and perform calibrations. Three test gasses
and instrument air can be turned on and of f b y solenoid s. 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.

2

Instruction Manual

IM-106-880C, OI
September 2009

sensor. After the gas sample flows

sensor and through the COe sensor, it is drawn through the

2

2

Figure 1-2. System Operation Diagram

COe

Combustibles

Sensor

Probe

Sample

Gas

Exhaust

O

Sensor

SENSOR

HOUSING

2

Eductor

Eductor Air

ELECTRONICS

Solenoids

Instrument Air

Flow Meter

7 scfh

Reference Air

HOUSING

CPU

COMM

Board

Power

Supply

Optional

Test Gas

Solenoid

Dilution Air

Low O

Test Gas

High O

Test Gas

CO

Test Gas

Instrument

Air

Flow Meter

50 cc/min.

(0.1 scfh)

2

2

39690001

1-6

Instruction Manual

IM-106-880C, OI
September 2009

Hazardous Area OCX 8800

Handling the Hazardous Area OCX 8800

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 Hazardous Area 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.

System Considerations

Prior to installing your Hazardous Area 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.

After verifying that you have all the component s, 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 for a system with
integral electronics. Figure 1-4 shows a typical system wiring for a system
with remote electronics. Simplified installations for the Hazardous Area OCX
8800 are shown in Figure 1-5 and Figure 1-6. Figure 1-7 shows the
dimensions for the optional sample tube support. Figure 1-8 shows the
dimensions for the optional in-situ filters. Figure 1-9 shows the optional panel
mounted blowback.

A source of instrument air is required at the Hazardous Area 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 Type 4X and IP66 and the
electronic components are rated to temperatures up to 185°F (85°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.

1-7

Instruction Manual

IM-106-880C, OI

Hazardous Area OCX 8800

Figure 1-3. Communication Connections and AMS Application - Hazardous Area OCX 8800 with Integral
Electronics

September 2009

Model 375

Field

Communicator

Customer’s Laptop

with AMS

AMS

Instrument

Air

OCX 8800 with

Integral Electronics

3 calibration
gas lines by
customer
[300 ft (91 m) max.)

Signal Output

(Twisted Pairs)

Termination in
Control Room

Figure 1-4. Communication Connections and AMS Application - Hazardous Area OCX 8800 with Remote
Electronics

38850003

OCX 8800

Sensor Housing

Instrument

Air

OCX 8800

Electronics Housing

3 calibration
gas lines by
customer
[300 ft (91 m) max.)

Signal Output

(Twisted Pairs)

Termination in

Control Room

Model 375

Field

Communicator

Customer’s Laptop

with AMS

AMS

38850004

1-8

Instruction Manual

IM-106-880C, OI
September 2009

Figure 1-5. Typical System Installation - Integral Electronics

Hazardous Area OCX 8800

Gases

Stack

Test Gas

Flow Meter

Dilution

Air

Flow

Meter

Adapter

Plate

Duct

Figure 1-6. Ty pical System Installation - Remote Electronics

Gases

OCX 8800 with

ELECTRONICS

Pressure

Regulator

High O Test Gas

2

Low O Test Gas

2

CO Test Gas

Duct

INTEGRAL

Signal Outputs
(Twisted Pairs)

Line Voltage

Instrument Air

Supply

(Reference Gas)

37390063

OCX 8800 with

REMOTE

ELECTRONICS

Heater

Power Cable

[up to 150 ft (46 m)]

Signal Cable

[up to 150 ft (46 m)]

Stack

Dilution

Air

Flow

Meter

Test Gas

Flow Meter

Pressure

Regulator

High O Test Gas
Low O Test Gas
CO Test Gas

Signal Outputs
(Twisted Pairs)

Line Voltage

Instrument Air

Supply

(Reference Gas)

2

2

37390064

1-9

Hazardous Area OCX 8800

Figure 1-7. Optional Sample Tube Support

Instruction Manual

IM-106-880C, OI
September 2009

1-10

Instruction Manual

IM-106-880C, OI
September 2009

Figure 1-8. Optional In-Situ Filters

1/4-18 NPT

1.3

(33)

1/4-18 NPT

Hazardous Area OCX 8800

7.3

(186)

InSitu Stainless Steel or Hastolloy Filter

2.0

(50)

4.0

(102)

1.8

(46)

InSitu High Surface Area Stainless Steel Filter

Figure 1-9. Optional Panel Mounted Blowback and Calibration/Reference Air Set (19” Rack or Wall Mount)

2.2

(55.9)

5.00

(127)

6.97

(177)

CALIBRATION/BLOWBACK

PANEL

OCX 8800

PROCESS ANALYTICAL DIVISION

1-440-914-1261

www.raihome.com

19.00 (482.6)

DILUTION GAS CAL GAS

16.5 (419.1)
Wall Mount

SET TO 55 PSIG BLOWBACK AIR

OCX88A: 35 PSIG
OCX88C: 45 PSIG

PRESSURE

REFERENCE AIR

PRESSURE

39930006

Wall Mount Hole Pattern

6.0 (152.4)

Wall Mount

39930007

1-11

Hazardous Area OCX 8800

SPECIFICATIONS

Specifications

Range 0-1% to 0-40% O2, fully field selectable

Net O

2

Combustibles 0-1000 ppm to 0-5%, fully field selectable
Accuracy

Oxygen ± 0.75% of reading or 0.05% O2 (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 212°F (-40° to 100°C), ambient
Electronics Housing -40° to 149°F (-40° to 65°C), ambient

Local Operator
Interface

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

Housings Mounting ­Integral Electronics

Mounting and Mounting
Positions - Remote
Electronics

Sensors Housing Flange
Electronics Housing Wall/Pipe

Materials

Probes 316L stainless steel - 1300°F (704°C)

Enclosures Low-copper aluminum
Calibration Semi-automatic or automatic
Calibration Gas Mixtures

Recommended

(Ref. test gas bottles

kit #1A99119G04)
Calibration Gas Flow 7 scfh (3.3 l/m), regulated to 20 to 30 psi (138 to 207 kPa)
Reference Air 2 scfh (1 l/m), clean, dry instrument-quality air (20.95% O

Eductor Air 5 scfh (2.5 l/m), clean, dry, instrument-quality air 20.95% O2),

Dilution Air 0.1 scfh (0.05 l/m), clean, dry, instrument-quality air (20.95% O

Instruction Manual

IM-106-880C, OI
September 2009

-40° to 185°F (-40° to 85°C), internal - operating temperature of
electronics inside instrument housing, as read by HART or
FOUNDATION fieldbus

-40° to 158°F (-40° to 70°C), ambient
[At temperatures above 158°F (70°C) inside instrument housing,
the infrared keypad will cease to function, but the Hazardous Area
OCX 8800 will continue to operate properly.]

54 lbs (20 kg)

55 lbs (20.5 kg)

57 lbs (21 kg)

59 lbs (22 kg)

Flange

Inconel 600 - 1832°F (1000°C)
Ceramic - 2600°F (1427°C)

0.4% O
8% O2, Balance N
1000 ppm CO, Balance Air

regulated to 45 psi (310 kPa)

regulated to 45 psi (310 kPa)

regulated to 45 psi (310 kPa)

, Balance N

2

Table continued on next page

2

2

),

2

)

2

1-12

Instruction Manual

IM-106-880C, OI
September 2009

Hazardous Area OCX 8800

Specifications

Blowback Air (optional) Clean, dry, instrument-quality air (20.95% O2), regulated to 55 psi

Sensors Housing Type 4X, IP66 with fitting and pipe on reference exhaust port to

Electronics Housing Type 4X, IP66 with fitting and pipe on reference exhaust port to

Certifications

Electrical Noise EN 61326-1, Class A
Line Voltage Universal 100 to 240 VAC ±10%, 50 to 60 Hz, no switches or

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 or FOUNDATION

Combustibles 4-20 mAdc, 950 ohm maximum (not present with FOUNDATION

Alarm Alarm output relay - dry contact, form C, 30mA, 30VDC capacity
Power Consumption 750 W maximum

NOTE
All static performance characteristics are with operati ng variables const ant. Specific ations subject t o change
without notice.

(379 kPa)

clean, dry atmosphere, two 3/4-14 NPT conduit ports

clean, dry atmosphere, two 3/4-14 NPT conduit ports

jumpers required, 3/4-14 NPT conduit port

fieldbus capability only

fieldbus)

1-13

Hazardous Area OCX 8800

Table 1-1. Prod uct Matrix - Hazardous Area OCX 8800

OCX88C O2/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)
12 3 ft (0.91 m) 316 SST up to 1300°F (704°C)
13 6 ft (1.83 m) 316 SST up to 1300°F (704°C)
14 9 ft (2.7 m) 316 SST up to 1300°F (704°C)
21 18 in. (457 mm) Inconel 600 up to 1832°F (1000°C)
22 3 ft (0.91 m) Inconel 600 up to 1832°F (1000°C)
23 6 ft (1.83 m) Inconel 600 up to 1832°F (1000°C)
24 9 ft (2.7 m) Inconel 600 up to 1832°F (1000°C)
31 18 in. (457 mm) Ceramic up to 2600°F (1427°C)
32 3 ft (0.91 m) Ceramic up to 2600°F (1427°C)

Code Probe Mounting Assembly

10 (ANSI 2 in. 150 lb) 6" dia. flange, 4.75" BC with 4 x 0.75" dia. holes - Standard O2 Cell

11 (ANSI 2 in. 150 lb) 6" dia. flange, 4.75" BC with 4 x 0.75" dia. holes - High Sulfur O2 Cell
20 (DIN) 185 mm dia. flange, 145 mm BC with 4 x 18 mm dia. holes - Standard O2 Cell
21 (DIN) 185 mm dia. flange, 145 mm BC with 4 x 18 mm dia. holes - High Sulfur O2 Cell

Code Mounting Hardware - Stack Side

0 No Adapter Plate (“0” must be chose n 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 Competitor’s Mount
5 Model 132 Adapter Plate

Code Mounting Hardware - Probe Side

0 No Adapter Plate
1 Probe Only (ANSI)
4 Probe Only (DIN)

Code Electronics Housing - NEMA 4X, IP66 HART Communications

H1 HART Communications - Basic Unit
H2 HART Communications - Local Operator Interface
H3 HART Communications - Calibration Solenoids
H4 HART Communications - Local Operator Interface and Calibration Solenoids

OCX88C 11 10 1 1 H3 01 Example

(1)

F1 Fieldbus Communications - Basic Unit
F2 Fieldbus Communications - Local Operator Interface
F3 Fieldbus Communications - Calibration Solenoids
F4 Fieldbus Communications - Local Operator Interface and Calibration Solenoids

Code Electronics Mount i ng

01 Integral to Sensor Housing Electronics
02 Split Architecture with no cable

Instruction Manual

IM-106-880C, OI
September 2009

1-14

Instruction Manual

IM-106-880C, OI
September 2009

Cont’d

Code In-Situ Filter

0 None
2 High Surface Area Stainless Steel

. 3 Hastelloy

OCX88C 11 10 1 1 H3 06 0 0 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.

Hazardous Area OCX 8800

Code

Accessories
0 None
2 Cal. Gas/Flow Rotometers & Ref. Gas Set
3 Cal. Gas/Flow Rotometers & Ref. Gas Set w/ Blowback
4 Cal. Gas/Flow Rotometers & Ref. Gas Set w/ Blowback - Panel

Mounted

1-15

Hazardous Area OCX 8800

Table 1-2. Accessories

PART NUMBER DESCRIPTION

1A99119H01 Oxygen test gas bottle; 0.4% O
1A99119H02 Oxygen test gas bottle; 8.0% O2, balance N
1A 99119H07 CO test gas bottle; 1000 ppm CO, balance air
1A99120H02 Regulator for Oxygen (may need 2)
1A99120H03 Regulator for CO test gas
1A99119G06 Wall mount bracket for test gas bottles
1A99119G05 Test gas regulators kit
1A99119G04 Test gas bottles kit

1A99292H01
4851B40G02 Wall or Pipe Mounting Kit
1A99784H02
6A00171G01 Power line filter kit

6A00288G01 Sample Tube Support, 18 in. (457 mm)
6A00288G02 Sample Tube Support, 3 Ft. (0.91 m)
6A00288G02 Sample Tube Support, 6 Ft. (1.83 m)
6A00288G04 Sample Tube Support, 9 Ft. (2.7 m)
6P00162H01 Flange Insulator

Instruction Manual

IM-106-880C, OI
September 2009

, balance N

2

Moore Industries SPA for Low O
Calibration Status, and Unit Fail

375 Field Communicator with 12 Megabyte buffer,
model no. 375HR1EKLU

Alarm, High COe Alarm,

2

2
2

1-16

Instruction Manual

IM-106-880C, OI
September 2009

Section 2 Installation

Mechanical Installation . . . . . . . . . . . . . . . . . . . . . . . . . . .page 2-2

Electrical Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page 2-7

Pneumatic Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . .page 2-13

Initial Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2-24

Before installing this equipment, read the "Safety instructions for the wiring and installation
of this apparatus" in Appendix A: Safety Data. Failure to follow the safety instructions could
result in serious injury or death.

Hazardous Area OCX 8800

The OCX88A can be installed in general purpose areas only. Do not install the OCX88A in
hazardous areas.

To maintain explosion-proof protection of the OCX 88C 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.

To maintain explosion-proof protection of the OCX88C in hazardous areas, the sensor
housing must not be mounted to any surface or flange that exceeds 200ºC (392ºF).

To maintain explosion-proof protection of the OCX 88C in hazardous areas, the sample
entering the sensor housing must not exceed 200ºC (392ºF).

http://www..raihome.com

Hazardous Area OCX 8800

Instruction Manual

IM-106-880C, OI
September 2009

MECHANICAL
INSTALLATION

Selecting Location

1. The location of the Hazardous Area OCX 8800 in the stack or flue is
most important for maximum accuracy in the oxygen analyzing process.
The probe must be positioned so the gas it measures is representative
of the process. Best results are normally obtained if the transmitter is
positioned near the center of the duct (40-60% 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. The sensing point should be
selected so the process gas temperature falls within the range of probe
material used. Figure 2-1 through Figure 2-5 provide mechanical
installation references. The ambient temperature inside the electronics
housing must not exceed 185°F (85°C).

2. 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. Therefore, either make the necessary repairs or
install the transmitter up stream of any leakage.

3. Ensure the area is clear of internal and external obstructions that will
interfere with installation and maintenan ce access to the unit. Allow
adequate clearance for the removal of the Hazardous Area OCX 8800.

Do not allow the temperature of the electronics housing to exceed 185°F (85°C) or damage
to the electronics may result.

Whenever a positive stack pressure exists at the installation site, be sure to connect all
pneumatic lines prior to installing the Hazardous Area OCX 8800 in the stack or ductwork.
Failure to connect the pneumatic lines can allow the flow of contaminants into the
Hazardous Area OCX 8800 ports.

Installation

1. Ensure all components are available to install the OCX 8800.

2. The Hazardous Area OCX 8800 may be installed intact as it is received.

3. Weld or bolt adapter plate (Figure 2-3) onto the duct.

4. Use the pipe or wall mounting hardware as shown in Figure 2-4 to
mount a remote electronics housing. Choose a location not to exceed
the length of the electronics cable ordered.

5. Ensure the conduits drop vertically from the Hazardous Area OCX 8800
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 2-5).

6. Where a positive stack pressure exists at the inst allation site, connect all
pneumatic lines prior to installing the Hazardous Area OCX 8800 in the
stack or ductwork.

2-2

Instruction Manual

IM-106-880C, OI
September 2009

NOTE

If process temperatures will exceed 392°F (200 °C), use anti- s eize compou nd
on stud threads to ease future removal of the Hazardous Area OCX 8800.

7. Insert sample and exhaust tubes through the opening in the mounting
flange and bolt the unit to the flange.

Uninsulated stacks or ducts may cause ambient temperatures in the electronics housing to
exceed 185°F (85°C) and damage the electronics.

8. If insulation is removed to access the duct for Hazardous Area OC X
8800 mounting, make sure to replace insulation afterward.

Figure 2-1. Installation, Hazardous Area OCX 8800 with Integral Electronics

Hazardous Area OCX 8800

2-3

Hazardous Area OCX 8800

Figure 2-2. Installation, Hazardous Area OCX 8800 with Remote Electronics

Instruction Manual

IM-106-880C, OI
September 2009

2-4

Instruction Manual

IM-106-880C, OI
September 2009

Figure 2-3. Adapter Plate Installation

Hazardous Area OCX 8800

2-5

Hazardous Area OCX 8800

Figure 2-4. Wall or Pipe Mounting of Electronics Housing

Instruction Manual

IM-106-880C, OI
September 2009

2-6

Instruction Manual

IM-106-880C, OI
September 2009

Figure 2-5. Installation with Drip Loops

Hazardous Area OCX 8800

ELECTRICAL
INSTALLATION

Conduit Drip Loops

Conduit Drip Loop Conduit Drip Loop

Duct Wall

Duct Wall

All wiring must conform to local and national codes. For reference, factory
wired solenoid power connections are shown in Figure 2-6.

37020004

Disconnect and lock out power before connecting the unit to the power supply. Failure to
lock out power could result in serious injury or death.

Install all protective equipment covers and safety ground leads after installation. Failure to
install covers and ground leads could result in serious injury or death.

2-7

Hazardous Area OCX 8800

To meet the Safety Requirements of IEC 1010 (EC requirement), and ensure safe operation
of this equipment, connection to the main electrical power supply must be made through a
circuit breaker (min 10 A) in close proximity and marked for this equipment which will
disconnect all current-carrying conductors during a fault situation. This circuit breaker
should also include a mechanically operated isolating switch. If not, then another external
means of disconnecting the supply from the equipment should be located close by. Circuit
breakers or switches must comply with a recognized standard such as IEC 947.

.To maintain explosion-proof protection of the OCX 8800 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.

Instruction Manual

IM-106-880C, OI
September 2009

To maintain explosion-proof protection of the OCX88C in hazardous areas, the sensor
housing must not be mounted to any surface or flange that exceeds 200ºC (392ºF).

To maintain explosion-proof protection of the OCX88C in hazardous areas, the sample
entering the sensor housing must not exceed 200ºC (392ºF).

NOTE

To maintain proper earth grounding, ensure a positive connection exists
between the sensor housing, the electronics housing, and earth. The
connecting ground wire must be 14 AWG minimum. Refer to Figure 2-6.

NOTE

Line voltage, signal, and relay wiring must be rated for at least 105ºC (221ºF ).

Electrical Connections

Electrical connections, power and communications are made to the ele ctronic
enclosure. The connections are made through two 3/4 NPT ports in the
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, IIB +H2 T3/T6 permanently mounted equipment.

2-8

Connect Line Voltage

The Hazardous Area OCX 8800 operates on 100 to 240 VAC line voltage at
50 to 60 Hz. The power supply requires no setup. Connect the line (L wir e) to
the L terminal, and the neutral (N wire) to the N terminal on the AC power
input terminal block in the electronics housin g. Connect the ground (G wire) to
the ground stud in the electronics housing as show n in Fig u re 2-6.

Instruction Manual

IM-106-880C, OI
September 2009

Hazardous Area OCX 8800

Connect Output Signals

The Hazardous Area OCX 8800 may be provided with either two 4-20 mA
signals with HART on the O2 signal or a single FOUNDATION fieldbus signal.
Connect the output terminals in the electronics hou sin g as shown in
Figure 2-6. Use indivi dual shielded twisted wire pairs. Terminate the shield at
the electronics housing.

4-20 mA Signal

O

2

One 4-20 mA signal represents the O
signal is the HART information accessible through a Model 375 Handheld
Communicator or AMS software . The O

COe 4-20 mA Signal

Another 4-20 mA signal at the AOUT 2 terminals represents the COe
value.

FOUNDATION fieldbus Signal

The FOUNDATION fieldbus signal provides all output information and is
accessible through a Model 375 handheld communicator.

Alarm Output Relay

value. Superimposed on the O2

2

signal is at the AOUT 1 terminals.

2

Connect any customer-supplied relay input to the alarm output relay terminal.
Use shielded wire and terminate the shield at the electronics housing. The
alarm output relay terminal is a set of dry, no. 2, form C, contacts with 30 mA,
30 VDC capacity.

Remote Electronics Connections to Sensor Housing

Make the following connections between the remote electronics and sensor
housings with the electronics cable ordered with the package (Figure 2-7).
Braided cable is available in lengths up to 150 ft. (46 m).

NOTE

Interconnect wiring shown is for Rosemount Analytical supplied cables. For
customer furnished interconnect wiring or cables, refer to Figure 2-8.

Signal Connections

Connect the electronics housing terminals to the corresponding terminals
in the sensor housing. The twisted wire pairs are numbered on the inner
plastic wrapper. Keep twisted pairs together and match the numbers and
wire colors shown in Figure 2-7.

Heater Power Connections

Use the blue, white, orange black, red, and yellow stranded wires in the
heater power cable to connect power to the three heaters in the sensor
housing. Match the wire colors to the corresponding heater power terminal
blocks in the sensor and electronics housings as shown in Figure 2-7.

2-9

Hazardous Area OCX 8800

Figure 2-6. Line Voltage, Earth, and 4-20 mA Connections

#1

Instruction Manual

IM-106-880C, OI
September 2009

F

Not used

F

OUNDATION

Fieldbus

OUNDATION

Fieldbus

-

{

+

-

{

+

NC

COM

NO

Alarm Output Relay

Terminal Block

OR

COe Signal

O Signal/

Typical for Electronics and

HART

AOUT2+

{

AOUT2 -

HART

AOUT1 -

{

AOUT1+

2

TOP VIEW

(1/2 SIZE)

Ground Stud

Earth Ground

Sensor Housing

Terminal Block

EMI Filter

Customer

Signal Output

#1

G

Wiring

Signal Port

3/4 NPT

Terminal

L1

N

Block

G

Ground

Stud

Power Port

3/4 NPT

G

External Tooth

Lockwasher

37390013

2-10

Instruction Manual

IM-106-880C, OI
September 2009

Figure 2-7. Electrical Connections Between Remote Electronics and Sensor Housing

Hazardous Area OCX 8800

YEL

RED

BLK

ORG

WHT

BLU

Heater Power

Connector (J3)

RED
BLK

WHT
BLK

GRN
BLK

BLU
BLK

Heater Power Cable

#1

O Sensor and

2

Thermocouple
Connector (J5)

T/C CO+
T/C CO-

T/C SB+
T/C SB­T/C O2+
T/C O2-

O2 CELL+
O2 CELL-

SHLD

#1

2HTR CO

1HTR CO

2HTR O

1HTR O

2HTR SB

1HTR SB

To ground

2
2

screw

#1

#1 #1

YEL

BRN

BLK

RED
WHT
ORG

BLK

BLK

#1

EXC+
CO ACT+
CO ACT-

CO REF+
CO REF­CJC+
CJC­EXC-

GRN

SHIELD

To

ground

screw

COe Sensor

and

Cold Junction

Connector (J4)

ELECTRONICS HOUSING

SENSOR HOUSING

RED

BLK

-

WHT

+

T/C SB

BLK

EXC-

BLK

GRN

BLK

Signal Cable

-

+

BLU

+

T/C O2

O2

-

BLK

-

+

T/C CO

BLK

-

ORG

CJC

CO

BRN

+

ACT

2

WHT

HTR

YEL

+

EXC

SB

1

BLU

To ground screw

GRN

37390014

2-11

WHT

RED

BLK

+

REF

2

YEL

HTR

-

CO

1

RED

2

BLK

HTR

-

O2

1

ORG

CO

+

Hazardous Area OCX 8800

Figure 2-8. Customer-Furnished Interconnect Wiring or Cables

Instruction Manual

IM-106-880C, OI
September 2009

SIGNALWIRING OR CABLE

NOTE: For RFI/CE compliance, the connector

must provide 360 degrees of electrical
contact to the cable shield.

ELECTRONICS END

7.25

±0.10

Strip Wire

Ends 3/16”

Typical

Stud Size

#10

7.25 ±0.10

9.25 ±0.10

0.5

Typ.

Heat Shrink

Tubing

2” Long

1/2” Size

2.0 ±0.25
Typical

7.0” Long Teflon Tubing,

0.042” ID (Cut off drain
wire at probe end of
shield).

Overall Cable Length

By Customer

150’Maximum

3/4 NPT Hub Size,

Liquid-tight

Strain Relief

Connector

See Note

Heat Shrink

Tubing

2” Long

1/2” Size

See Note

8 twisted pairs 24 AWG,
stranded, insulated,
tinned copper
conductors, 200 C, 300
volts, with overall braid
of 34 AWG tinned
copper, 90% coverage
and 24 AWG tinned
copper, uninsulated
drain wire.

o

(typical on both ends of wiring)

8.625 ±0.10

6.875 ±0.10

A

3.875
±0.10

4.625
±0.10

5.375
±0.10

6.125
±0.10

#1

#2

DETAIL

PROBE END

12.5 ±0.10

10.375 ±0.10

Heat Shrink Tubing
1” Long, 3/16” Size

A

Ferrule,
Uninsulated

Strip Wire

Ends 3/16”

Typical

Green,

16 AWG

Stud Size

2-12

ELECTRONICS END

4.0 ±0.10

#10

4.5 ±0.10

0.5
Typ.

HEATER WIRING OR CABLE

3/4 NPT Hub Size,

Liquid-tight

Strain Relief

Connectors

Heat Shrink Tubing

2” Long, 1/2” Size

2.0 ±0.25 Typical

4.25” Long Teflon Tubing,

0.042” ID.(Cut off drain wire
at probe end of shield).

PROBE END

5.5 ±0.10

Ferrule, Uninsulated

Heat Shrink Tubing

2” Long, 1/2” Size

Green, 16 AWG

8 Conductors, 16 AWG, Stranded,

O

200 C, 600 volts.
Braided shield - tinned copper, 90%
coverage with 18 AWG 24 tinned copper,
uninsulated, drain wire.

Stud Size #6

37390061

Instruction Manual

IM-106-880C, OI
September 2009

Hazardous Area OCX 8800

PNEUMATIC
INSTALLATION

Pneumatic system connections depend on whether reference air set,
calibration solenoids, and/or blowback equipment options are equipped on
your transmitter. Refer to the following paragraphs and select the option that
applies to your transmitter configuration.

Reference Air Set Option (only)

When no options or only the reference air set option is equipped, use the
following procedure to install the pneumatic system components.

1. Refer to Figure 2-9. Connect the reference air set (regulator/filter and
pressure gage) to the instrument air inlet on the electronics housing an d
to the inlet side of the dilution air flow meter.

2. Connect the dilution air flow meter output to the dilution air inlet fitting on
the sensor housing.

3. Install an air line between the instrument air outlet fitting on the
electronics housing and the tee fitting on the sensor housing.

.

Do not use 100% nitrogen as an O2 low gas. It is suggested that O2 low gas be between

0.4% and 2.0% O

parts per million. Failure to use proper gases will result in erroneous readings.

. Do not use gases with hydrocarbon concentrations of more than 40

2

4. One CO gas and two O2 gases are used to calibrate the Hazardous
Area OCX 8800:

CO - 1000 ppm or up to 4%, Balance air

low gas - 0.4% , Balance N

O

2

O2 high gas - 8%, Balance N

2

2

Connect the output of the test gas sources to the inlet port of the CAL
GAS flow meter. Install an air line between the flow meter outlet port and
the CAL GAS inlet fitting on the sensor housing.

2-13

Hazardous Area OCX 8800

Figure 2-9. Pneumatic
Installation, OCX with Reference
Air Set without Autocalibration

Instruction Manual

IM-106-880C, OI
September 2009

2-14

Instruction Manual

IM-106-880C, OI
September 2009

Figure 2-10. Pneumatic Installation , OCX with Reference Air Set, Solenoids and Autocalibration,
without COe Zero Function

Hazardous Area OCX 8800

Reference Air Set and Solenoids Option without COe Zero Function

When the reference air set and test gas solenoids are included with your
Hazardous Area OCX 8800, use the following procedure to install the
pneumatic system components.

1. Install the reference air set according to th e instructions in Reference Air
Set Option, steps 1 through 3.

2. Refer to Figure 2-10. Connect the O

inlet fitting on the electronics housing. Install a shutoff valve and

LO O

2

pressure regulator with gage in the O

3. Connect the O

high gas source to the CAL GAS HI O2 inlet fitting.

2

Install a shutoff valve and pressure regulator with gage in the O

low gas source to the CAL GAS

2

low supply line, as shown.

2

high

2

supply line.

2-15

Instruction Manual

IM-106-880C, OI

Hazardous Area OCX 8800

4. Connect the CO high gas to the CAL GAS HI COe inlet fitting. Install a
shutoff valve and pressure regulator with gage in the CO high supply
line.

5. Connect the CAL GAS outlet fitting of the electronics housing to the inlet
port of the CAL GAS flow meter. Install an air line between the flow
meter outlet port and the CAL GAS inlet fitting on the sensor housing.

Reference Air Set and Solenoids Option with COe Zero Function

Figure 2-11 shows the piping arrangement for the Haza rdous Area OCX 8800
with autocalibration when the COe Zero Function is used. The arrangement is
similar to Figure 2-10 except instrument air is used as the Hi O
Refer to Section 3 for details of this function.

Figure 2-11. Pneumatic Installation, OCX with Reference Air Set, Solenoids and Autocalibration, with
COe Zero Function

September 2009

2

test gas.

2-16

Instruction Manual

IM-106-880C, OI
September 2009

Hazardous Area OCX 8800

Reference Air Set, Solenoids, and Blowback Option with
COe Zero Function

Figure 2-13 shows the piping arrangement for the Hazardous Area OCX 8800
with the blowback and autocalibration options when the COe Zero Function is
used. The arrangement is similar to Figure 2-12 except instrument air is used
as the Hi O

Reference Air Set, Solenoids, and Blowback Option without
COe Zero Function

Installing a Hazardous Area OCX 8800 with the blowback option requires the
addition of air operated blowback valve, regulator and gage, and check valve.

Figure 2-12 shows the piping arrangement for the Hazardous Area OCX 8800
with the blowback and autocalibration options. Figure 2-14 shows the piping
arrangement for the OCX 8800 with the blowback option, but without
autocalibration (without test gas solenoids).

When the reference air set, calibration gas solenoids, and blowback options
are included with your transmitter, use the following procedure to install the
pneumatic system components.

test gas. Refer to Sectio 3 for details of the function.

2

1. Connect the calibration gas sources according to the instructions in the
previous paragraph “Reference Air Set and Solenoids Option”, steps 2
through 5.

2. Connect a clean, dry , instrument-quality su pply of air (20.95% O
45 psig and 55 psig pressure regulato rs. The inlet to the 45 psig
regulator accepts a 1/8" NPT fitting. The inlet to the 55 psig regulator
accepts a 1/4" NPT fitting.

3. See the upper leg of the instrument air supply. Connect the output of the
35 psi regulator/filter to one port of the normally-closed air-operated
solenoid valve, and to the inlet side of the dilution air flow meter.

4. Connect the dilution air flow meter output to the DILUTION AIR inlet
fitting on the sensor housing.

5. Install an instrument air line between the open port of the normally-open
air-operated solenoid valve and the tee fitting on the sensor housing.

6. Connect the output of the 55 psi regulator/filter to one port of the
normally-open air-operated solenoid valve, and to the instrument air
inlet on the back of the electronics housing.

7. Install an air line between the open port of the normally-closed
air-operated solenoid valve and the check valve inlet fitting on the
sensor housing.

8. Install an air line between the instrument air outlet fitting on the
electronics housing and the control air inlet fitting on the air-operated
solenoid valve.

) to the

2

2-17

Instruction Manual

IM-106-880C, OI

Hazardous Area OCX 8800

Figure 2-12. Pneumatic Installation, OCX with Reference Air Set, Solenoids, Blowback and Autocalibration,
without COe Zero Function

September 2009

2-18

Instruction Manual

IM-106-880C, OI
September 2009

Figure 2-13. Pneumatic Installation, OCX with Reference Air Set, Solenoids, Blowback and Autocalibration,
with COe Zero Function

Hazardous Area OCX 8800

Reference Air Set, Solenoids, and Blowback Option
with COe Zero Function

Figure 2-13 shows the piping arrangement for the Hazardous Area OCX 8800
with the blowback and autocalibration options when COe Zero Function is
used. The arrangement is similar to Figure 2-12 except instrument air is used
as the Hi O

test gas. Refer to Section 3 for details of this function.

2

2-19

Instruction Manual

IM-106-880C, OI

Hazardous Area OCX 8800

Figure 2-14. Pneumatic Installation, OCX with Reference Air Set and Blowback without Autocalibration

September 2009

2-20

Instruction Manual

IM-106-880C, OI
September 2009

Reference Air Set and Blowback Panels

An optional blowback panel is shown in Figure 1-9. Piping arrangement for
blowback panel without autocalibration without COe Zero Function is shown
in Figure 2-15. Piping arangement for blowback panel with autocalibration
without COe Zero Function is shown in Figure 2-16. Piping arrangement for
blowback panel with autocalibration with COe Zero Function is shown in
Figure 2-17.

Figure 2-15. Pneumatic Installation, Blowback Panel without Autocalibration without COe Zero Function

Hazardous Area OCX 8800

Check Valve

Sensor
Housing

Instrument
Air Supply

CAL Gas

Out

CAL Gas

In

Dilution

Air Out

Instrument Air to Electronics

Blowback

Air Out

Blowback

Control Air

Instrument

Eductor Air In

Instrument Air

Air Out

CAL Gas In

Reference Air In

Dilution Air In

Actuating Air

2-Stage

Regulators

2

2

CO

HI O

LO O

Electronics

Housing

39930003

2-21

Instruction Manual

IM-106-880C, OI

Hazardous Area OCX 8800

Figure 2-16. Pneumatic Installation, Blowback Panel with Autoca libration without COe Zero Function

Check Valve

Eductor Air In

Instrument Air

Dilution Air In

September 2009

Sensor
Housing

CAL Gas In

Reference Air In

Instrument
Air Supply

CAL Gas

Out

2-Stage

Regulators

CAL Gas

Out

CAL Gas

In

Electronics

Housing

Dilution

Air Out

Instrument

Air to

Electronics

Actuating Air

Blowback

Air Out

Blowback

Control Air

Instrument

Air Out

2-22

2

2

CO

HI O

LO O

39930004

Instruction Manual

IM-106-880C, OI
September 2009

Figure 2-17. Pneumatic Installation, Blowback Panel with Autocalibration with COe Zero Fu nction

Hazardous Area OCX 8800

2-23

Instruction Manual

IM-106-880C, OI

Hazardous Area OCX 8800

September 2009

INITIAL STARTUP Observe the following Caution and Note. Refer to Section 3: Configuration

and Startup, for Hazardous Area OCX 8800 startup information.

Upon completing installation, make sure that the Hazardous Area OCX 8800 is turned on
and operating prior to firing up the combustion process. Damage can result from having a
cold Hazardous Area OCX 8800 exposed to the process gases.

If ducts will be washed down during outages, make sure to power down the Hazardous Area
OCX 8800 units and remove them from the wash area.

NOTE

During outages, and whenever possible, leave Hazardous Area OCX 8800
units running to prevent condensation and premature aging from thermal
cycling.

2-24

Instruction Manual

IM-106-880C, OI
September 2009

Hazardous Area OCX 8800

Section 3 Configuration and Startup

Verify Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 3-1

Initial Power Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 3-4

Set Test Gas Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 3-4

Calibration Solenoids . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page 3-5

Blowback Feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 3-6

Calibration Verify Feature . . . . . . . . . . . . . . . . . . . . . . . . . page 3-7

Calibration Tolerance Feature . . . . . . . . . . . . . . . . . . . . . .page 3-9

COe PURGE / ZERO FEATURE . . . . . . . . . . . . . . . . . . . . . page 3-10

OCX 8800 Reset Procedure . . . . . . . . . . . . . . . . . . . . . . . .page 3-12

Install all protective equipment covers and safety ground leads after installation. Failure to
install covers and ground leads could result in serious injury or death.

V E RIFY INSTALLATION Ensure the Hazardous Area OCX 8800 is installed correctly. Verify

mechanical installation and all electrical and pneu matic connections . Refer to
Section 2, Installation.

Make sure that the Hazardous Area OCX 8800 is turned on and operating prior to firing up
the combustion process. Damage can result from having a cold Hazardous Area OCX 8800
exposed to the process gases.

NOTE

During outages, and whenever possible, leave a ll Hazardous Ar ea OCX 8800
units running to prevent condensation and premature aging from thermal
cycling.

http://www..raihome.com

Hazardous Area OCX 8800

Verify Configuration - HART Electronics

There are three switches on the microprocessor board which are user
configurable for the Hazardous Area OCX 8800 with HART electronics
(Figure 3-1). SW1 dete rmin es if the O
externally powered. SW2 determines if the COe 4-20 mA signal is internally or
externally powered. SW3 sets the rail limits for the O
signals and configures the sample line heater control circuit. All switches are
accessible through holes in the electronics box.

Remove power from the Hazardous Area OCX 8800 before changing defaults. If defaults
are changed under power, damage to the electronics may occur.

Verify that the following switch settings are correct for your Hazardous Area
OCX 8800 installation:

Figure 3-1. Hazardous Area OCX 8800 Defaults - HART Electronics

Instruction Manual

IM-106-880C, OI
September 2009

4-20 mA signal is internally or

2

and COe 4-20 mA

2

3-2

Instruction Manual

IM-106-880C, OI
September 2009

Hazardous Area OCX 8800

SW1 The two settings are internally or externally powering the O2 4-20
mA signal. The factory setting is for the O
powered.

SW2 The two settings are internally or externally powering the COe 4-20
mA signal. The factory setting is for the COe 4-20 mA signal to be
internally powered.

SW3 The factory sets this switch as follows:

4-20 mA signal to be internally

2

Figure 3-2. Hazardous Area
OCX 8800 Defaults - Fieldbus
Electronics

• Position 1 determines the O
high, 21.1 mA, or low, 3.5 mA. The factory setti ng is low, 3.5 mA.

• Position 2 determines the COe 4-20 mA signal rail limit. The settings
are high, 21.1 mA, or low, 3.5 mA. The factory setting is high, 21.1 mA.

• Positions 3 and 4 must be set as shown for proper software control of
the device heaters.

Verify Configuration - Fieldbus Electronics

There is one switch on the microprocessor board which must be se t for the
Hazardous Area OCX 8800 with fieldbus electronics (Figure 3-2). SW3
configures the sample line heater control circuit. This switch is accessible
through holes in the electronics box.

Remove power from the Hazardous Area OCX 8800 before changing defaults. If defaults
are changed under power, damage to the electronics may occur.

4-20 mA signal rail limit. The settings are

2

3-3

Instruction Manual

IM-106-880C, OI

Hazardous Area OCX 8800

September 2009

Verify that the following switch settings are correct for your Hazardous Area
OCX 8800 installation:

SW3 The factory sets this switch as follows:

• Position 1 not used.

• Position 2 not used.

• Positions 3 and 4 must be set as shown for proper software control of
the device heaters.

INITIAL POWER UP Allow adequate time (approximately 60 minutes) for the heaters to begin

operation and for the Hazardous Area OCX 8800 to reach normal operating
temperature on power up. Normal operating tem p er at ur e fo r the O
736°C. Normal operating temperature for the combu stibles cell is 300 °C. The
normal sample line temperature is 170°C. During this time the eductor air
solenoid will remain closed so no sample is pulled through the analyzer.
When the OCX reaches operating temperature the solenoid will energize,
eductor air will begin to flow, and the unit will begin normal operation.

cell is

2

SET TEST GAS VALUES Use Field Communicator or the optional LOI to set test gas values for

calibration. Refer to Section 4, Using the LO I or Sec tio n 6, Field
Communicator for more information.

Setting Test Gas Values with the Field Communicator

1. Use the 375 Field Communicator software to access the HART menu.

2. From the DETAILED SETUP menu, select CAL SETUP.

3. From the CAL SETUP menu, select O2 CAL PARAMS or COe CAL
PARAMS.

4. From O2 CAL PARAMS, select O2 HIGH GAS. Enter the percent O
used for the high O

5. From O2 CAL PARAMS, select O2 LOW GAS. Enter the percent O
used for the low O

6. From COe CAL PARAMS, select CO e Test Gas. Enter the CO
concentration (ppm) used for COe test gas.

Setting Test Gas Values with Fieldbus Communicator

1. Use the 375 Field Communicator software to access the Fieldbus menu.

2. From the TRANSDUCER menu, select O2 CAL.

3. From O2 CAL menu select O2 CAL SETUP.

4. From O2 CAL SETUP, select O2 HIGH GAS. Enter the percent O
for the high test gas.

5. From O2 CAL SETUP, select O2 LOW GAS. Enter the percent O
for the low test gas

6. From the TRANSDUCER menu select COe CAL SETUP.

7. From COe CAL SETUP, select COe Test Gas. Enter the CO
concentration (ppm) used for the COe Test Gas.

test gas.

2

test gas.

2

used

2

used

2

2

2

3-4

Instruction Manual

IM-106-880C, OI
September 2009

Hazardous Area OCX 8800

Setting Test Gas Values with the LOI

1. Use the "Z" pattern to enter the LOI menu tree.

2. From the SYSTEM menu, select Calib Setup.

3. From Calib Setup, select O2 High Gas %. Enter the percent O
for the high O

4. Select the down arrow and the next selection will be O2 Low Gas %.
Enter the percent O

5. Select the down arrow several times to display COe T est Gas. Enter the
CO concentration (ppm) used for COe test gas.

test gas.

2

2

used for the low O2 test gas.

used

2

CALIBRATION
SOLENOIDS

The Hazardous Area OCX 8800 can be provided with optional calibration
solenoids for the purpose of performing autocalibration. The solenoids are
controlled by the Hazardous Area OCX 8800 software and automatically
switch in the proper calibration gas during the calibration cycle.

A Hazardous Area OCX 8800 shipped from the factory with calibration
solenoids must be configured before autocalibration can be implemented.
This same process must be performed any time a replacement card stack is
installed.

Configuring the Calibration Solenoids
with the Field Communicator - HART

1. Use the 375 Field Communicator to access the HART menu.

2. From the DETAILED SETUP menu, select CAL SETUP.

3. From the CAL SETUP menu, select O2 CAL PARAMS/COe CAL
PARAMS.

4. From the O2 CAL PARAMS/COe CAL PARAMS, select Solenoids.
Select Yes to enable the solenoids.

Configuring the Calibration Solenoids with the Field Communicator ­Fieldbus

1. Use the 375 Field Communicator to access the Fieldbus menu.

2. From the TRANSDUCER block menu, select O2 CAL/COE CAL.

3. From the O2 CAL/COE CAL menu, select O2 CAL SETUP/COE CAL
SETUP.

4. From the O2 CAL SETUP/COE CAL SETUP, select Solenoids. Select

Present to enable the solenoids.

Configuring the Calibration Solenoids with the LOI

1. Use the "Z" pattern to enter the LOI menu tree.

2. From the SYSTEM menu, select Calib Setup.

3. From the Calib Setup menu, select Use Solenoids. Select Yes to
enable the solenoids.

3-5

Instruction Manual

IM-106-880C, OI

Hazardous Area OCX 8800

September 2009

BLOWBACK FEATURE The blowback feature blows instrument air back through the center of the

internal filter and out the sample tube of the p ro be. This r em oves built u p d irt
and particulate from the internal filter , sa mple line and any optional in-situ filter
on the end of the sample tube. The blowback feature is normally used in
systems that have heavy particulate in the process stream.

The blowback feature requires the optional blowback hardware to be properly
installed external to the Hazardous Area OCX 8800. See Section 2,
Pneumatic Installation, for details.

A Hazardous Area OCX 8800 shipped from the factory must be configured
before blowback can be implemented. This same process must be performed
any time a replacement card stack is installed.

Configuring Blowback with the Field Communicator - HART

1. Use the 375 Field Communicator or AMS software to access the HART
menu.

2. From the DETAILED SETUP menu, select INPUT/OUTPUT.

3. From the INPUT/OUTPUT menu, select BLOWBACK.

4. From the BLOWBACK, select BlBk Enabled. Select Yes to enable
blowback. Also set the following parameters:

BlBk Intrvl - Length of time between blowback events (60 minutes
recommended).

BlBk Period - Length of time blowback is activated (5 seconds
recommended).

BlBk Purge Time - Length of time after blowback is complete before
oxygem/combustibles readings are considered valid (Set as required by
the application).

5. Manually initiate blowback from DIAG/SERVICE, then BLOW BACK,
When select BLOWBACK.

6. Configuring Blowback with the Field Communicator - Fieldbus

1. Use the 375 Field Communicator or AMS software to access the
Fieldbus menu.

2. From the TRANSDUCER block menu, select Alarm Relay/Blowback.

3. From the Alarm Relay/Blowback menu, select Blowback.

4. From the Blowback menu, select Blowback Enabled. Also set the
following parameters:

Blowback Interval - Length of time between blowback events (60
minutes recommended).

Blowback Period - Length of time blowback is activated (5 seconds
recommended).

Blowback Purge Time - Length of time after blowback is complete
before oxygem/combustibles readings are considered valid (Set as
required by the application).

3-6

Initiate Blowback - Initiates a blow back event manually.

Instruction Manual

IM-106-880C, OI
September 2009

Hazardous Area OCX 8800

Configuring Blowback with the LOI

1. Use the "Z" pattern to enter the LOI menu tree.

2. From the SYSTEM menu, select Blow Back.

3. From the Blow Back menu, select Blow Bk Enable. Select Yes to
enable blowback. Also set the following parameters:

Blow Bk Intrvl - Length of time between blowback events. Range is 0
to 32,000 minutes. Default is 60 minutes. 60 minutes is recommended.

Blow Bk Period - Length of time blowback in activated. Range is 1 to 5
seconds. Default is 2 seconds. 5 seconds is recommended.

Blow Bk Purge - Length of time after blowback is complete before
oxygem/combustibles readings are considered valid. Range is 0 to 500
seconds. Default is 88 seconds. Set as required by the application.

Force Blow Bk - Initiates a blow back event manually.

CALIBRATION VERIFY
FEATURE

The calibration verify feature flows one or more calibration gases to verify the
analyzer is reading correctly. The calibration verify feature flows each
calibration gas on demand to verify calibration, but does not change the slope
or constant of the current calibration. This function uses the same gas flow
and purge times from the basic calibration setup.

The calibration verify feature is only valid if the Hazardous Area OCX 8800 is
supplied with calibration solenoids and the solenoids have been activated.

During the Calibration Verify function the analog output signals will track the oxygen and
combustibles readings. To avoid a potentially dangerous operating condition, the
Hazardous Area OCX 8800 must be removed from the automatic combustion control loop
before performing the Calibration Verify procedure.

Performing a Calibration Verify with the Field Communicator - HART

1. Use the 375 Field Communicator or AMS software to access the HART
menu.

2. From the DEVICE SETUP menu, select DIAG/SERVICE.

3. From the DIAG/SERVICE menu, select CALIBRATION.

4. From the CALIBRATION, select CAL VERIFY. Select Verify

Calibration. From this menu, select the functions as follows:
Flow High O2 Gas - Flows the high O2 test gas for the time specified in

the calibration setup.
Flow Low O2 Gas - Flows the low O2 test gas for the time specified in

the calibration setup.
Flow High COe Gas - Flows the COe test gas for the time specified in

the calibration setup.
Purge Gas - Initiates a delay for the specified purge time before

oxygen/combustibles readings are co ns ide re d valid.

3-7

Hazardous Area OCX 8800

NOTE
A Purge will automatically follow a gas flow.

Performing a Calibration Verify with the Field Communicator - Fieldbus

1. Use the 375 Field Communicator or AMS software to access the
Fieldbus menu.

2. From the TRANSDUCER block menu, select METHODS.

3. Set the Mode to OOS (Out of Service) before starting the Calibration
Verify process.

4. From the METHODS menu, select OCX Cal Verify. From this menu,
select the functions as follows:

Flow High O2 Gas - Flows the high O2 test gas for the time specified in
the calibration setup.

Flow Low O2 Gas - Flows the low O2 test gas for the time specified in
the calibration setup.

Flow High COe Gas - Flows the COe test gas for the time specified in
the calibration setup.

Purge Gas - Initiates a delay for the specified purge time before
oxygen/combustibles readings are considered valid.

Instruction Manual

IM-106-880C, OI
September 2009

NOTE
A Purge will automatically follow a gas flow.

Performing a Calibration Verify with the LOI

1. Use the "Z" pattern to enter the LOI menu tree.

2. From the CALIBRATION menu, select Cal Verify.

3. From the Cal Verify menu, select the functions as follows:
Flow High Gas - Flows the high O2 test gas for the time specified in the

calibration setup.

Flow Low Gas - Flows the low O2 test gas for the time specified in the

calibration setup.

Flow COe Gas - Flows the COe test gas for the time specified in the

calibration setup.

Purge - Initiates a delay for the specified purge time before

oxygen/combustibles readings are considered valid.

NOTE

A Purge will automatically follow a gas flow.

3-8

Instruction Manual

IM-106-880C, OI
September 2009

Hazardous Area OCX 8800

CALIBRATION
TOLERANCE FEATURE

The calibration tolerance feature provides a mechanism to fail a calibration if
the calibration measurement does not fall within a specific tolerance of the
test gas value. The tolerance is preset within the Hazardous Area OCX 8800
software and is not user adjustable. The tolerance is different between the
oxygen and combustibles test gases. For oxygen, the calibration will fail if the
measured value differs by more than ±10% of the configured value. For
combustibles, the calibration will fail if the measured value differs by more
than ±30% of the configured value.

A Hazardous Area OCX 8800 shipped from the factory must be configured
before the calibration tolerance feature can be implemented. This same
process must be performed any time a replacement card stack is installed.

Configuring the Calibration Tolerance Feature with the Field
Communicator - HART

1. Use the 375 Field Communicator or AMS software to access the HART
menu.

2. From the DETAILED SETUP menu, select CAL SETUP.

3. From the CAL SETUP menu, select O2 CAL PARAMS.

4. To enable the calibration tolerance feature for the oxygen calibration,
from the O2 CAL P ARAMS, select O2 Tol Check. Select On to enable
the calibration tolerance feature.

5. Back out to the CAL SETUP menu, select COe CAL PARAMS.

6. To enable the calibration tolerance feature for the combustibles
calibration, from the COe CAL PARAMS, select COe Tol Check.
Select On to enable the calibration tolerance feature.

Configuring the Calibration Tolerance Feature with the Field
Communicator - Fieldbus

1. Use the 375 Field Communicator or AMS software to access the
Fieldbus menu.

2. From the TRANSDUCER block menu, select O2 CAL/COe CAL.

3. From the O2 CAL/COe CAL menu, select O2 CAL SETUP/COe CAL
SETUP.

4. From the O2 CAL SETUP/COe CAL SETUP menu, select O2
Tolerance Check/COe Tolerance Check. Select Yes to enable the
calibration tolerance feature.

Configuring the Calibration Tolerance Feature with the LOI

1. Use the "Z" pattern to enter the LOI menu tree.

2. From the SYSTEM menu, select Calib Setup.

3. From the Calib Setup menu, select the following:

O2 T ol Check - Select Yes to enable the calibration tolerance feature
for the oxygen calibration.

Comb Tol Check - Select Yes to enable the calibration tolerance
feature for the combustibles calibration.

3-9

Hazardous Area OCX 8800

Instruction Manual

IM-106-880C, OI
September 2009

COe PURGE / ZERO
FEATURE

This feature provides a way to periodically flood the COe sensor with air to
perform two functions; a) provide additional oxygen to help burn off any
combustible residue from the COe sensor, and b) allow for optional
adjustment of the COe calibration constant. If the OCX8800 is configured to
update the COe calibration constant, only the constant is updated. The COe
calibration slope is not affected. To update both the constant and slope a full
calibration must take place.

The feature uses the calibration solenoid that is also used for high O2 test gas
and COe zero gas. For the feature to work properly, instrument air is used as
the high O2 test gas. This also requires the high O2 test gas value to be set
at 20.95%.

As an option, a two way valve may be installed to switch the high O2 test gas
between the normal calibration gas and instrument air. This allows the
Hazardous Area OCX 8800 to use a specified calibration gas for calibration,
then instrument air for the COe zero feature. Switching between the two
gases must be manually coordinated between scheduled calibrations and
COe zero events.

When the COe zero feature is used, special pneumatic connections are
required. See Section 2, Pneumatic Installation, for details.

The COe zero feature is only valid if the Hazardous Area OCX 8800 is
supplied with calibration solenoids and the solenoids have been activated.

A Hazardous Area OCX 8800 shipped from the factory must be configured
before the COe zero feature can be implemented. This same process must
be performed any time a replacement card stack is installed.

During the COe Zero Function the analog output signals may track the oxygen and
combustibles readings if configured to do so. To avoid a potentially dangerous operating
condition, the Hazardous Area OCX 8800 must be removed from the automatic combustion
control loop before performing the COe Zero Function procedure.

At the completion of the COe Zero Function, the COe analog output signal will change if the
Zero Update parameter is set to "Yes".

Configuring the COe Zero Feature with the Field Communicator - HART

1. Use the 375 Field Communicator or AMS software to access the HART
menu.

2. From the DETAILED SETUP menu, select INPUT/OUTPUT.

3. From the INPUT/OUTPUT menu, select COE ZERO.

4. From the COE ZERO menu, select the functions as follows:

Zero Enabled - Select "Yes" or "No" to enable or disable this feature.
Zero Intrvl - Length of time between COe zero events. Range is 60 to

480 minutes. Default is 60 minutes.

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Instruction Manual

IM-106-880C, OI
September 2009

Hazardous Area OCX 8800

Zero Flow - Length of time COe zero gas flows. Range is 120 to 600
seconds. Default is 120 seconds.

Zero Purge - Length of time after COe zero is complete before
oxygen/combustibles readings are considered valid. Range is 60 to
180 seconds. Default is 60 seconds. Total duration of this function is
flow time plus purge time.

Zero Tracks - Determines if the analog output signals track or hold
during the function. Valid choices are None, Both, COe, and O2.

Zero Update - Determines if the COe calibration constant is u pdated at
the end of the function. Valid choices are Yes and No. A Y es choice will
cause the COe calibration constant to update.

Configuring the Calibration Tolerance Feature with the Field
Communicator - Fieldbus

1. Use the 375 Field Communicator or AMS software to access the
Fieldbus menu.

2. From the TRANSDUCER block menu, select COe ZERO.

3. From the COe ZERO menu, select the functions as follows:

COe Zero Enable - Select "Yes" or "No" to enable or disable this
feature.

COe Zero Interval - Length of time between COe zero events. Range
is 60 to 480 minutes. Default is 60 minutes.

COe Zero Duration - Length of time COe zero gas flows. Range is 120
to 600 seconds. Default is 120 seconds.

COe Zero Purge Time - Length of time after COe zero is complete
before oxygen/combustibles readings are considered valid. Range is
60 to 180 seconds. Default is 60 seconds. Total duration of this
function is flow time plus purge time.

COe Zero Output T rack - De termines if the ana log output signa ls track
or hold during the function. Valid choices are None, Both, COe, and O2.

COe Zero Update - Determines if the COe calibration constant is
updated at the end of the function. Valid choices are Yes and No. A
Yes choice will cause the COe calibration constant to update.

Configuring the COe Zero Feature with the LOI

1. Use the "Z" pattern to enter the LOI menu tree.

2. From the SYSTEM menu, select Input/Output.

3. From the Input/Output menu, select COe Zero. Select the functions as
follows:

COe Zero Enable - Select "Yes" or "No" to enable or disable this
feature.

COe Zero Intrvl - Length of time between COe zero events. Range is
60 to 480 minutes. Default is 60 minutes.

COe Zero Flow - Length of time COe zero gas flows. Range is 120 to
600 seconds. Default is 120 seconds.

3-11

Hazardous Area OCX 8800

COe Zero Purge - Length of time after COe zero is complete before
oxygen/combustibles readings are considered valid. Range is 60 to 180
seconds. Default is 60 seconds. Total duration of this function is flow
time plus purge time.

COe Zero T racks - Determines if the analog output signals track or hold
during the function. Valid choices are None, Both, COe, and O2.

COe Zero Update - Determines if the COe calibration constant is
updated at the end of the function. V alid choi ces are Yes and No. A Y es
choice will cause the COe calibration constant to update.

Instruction Manual

IM-106-880C, OI
September 2009

OCX 8800 RESET
PROCEDURE

Whenever you correct an equipment alarm or fault condition, the Hazardous
Area OCX 8800 will either revert to normal operation or continue to indicate
an alarm status condition. If the equipment does not revert to normal
operation when a fault condition is cleared, or if instructed to do so in
Section 8, Troubleshooting, use the following procedure to reset the
Hazardous Area OCX 8800.

OCX Reset with the LOI

1. Use the "Z" pattern to enter the LOI menu tree. (Refer to Section 4,
Using the LOI).

2. Select the SYSTEM submenu.

3. From the SYSTEM submenu, select the Status submenu.

4. From the Status submenu, select Reset Device. The Hazardous Area
OCX 8800 will reset and the LOI will revert to the normal operation
display.

OCX Reset with the Field Communicator

Remove the Hazardous Area OCX 8800 from the process loop and re cycle
power.

3-12

Instruction Manual

IM-106-880C, OI
September 2009

Hazardous Area OCX 8800

Section 4 Using the LOI

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 4-1

Display Orientation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page 4-1

LOI Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page 4-2

LOI Menu Tree . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 4-4

OVERVIEW This section describes the installation and operation of the LOI module in the

Hazardous Area OCX 8800.

DISPLAY ORIENTATION The LOI module mounts to a connector on the LOI board. The board is

installed on the end of the electronics stack in the electronics ho using,
Figure 4-1. There are four mating connectors on the back of the LOI module
that allow the LOI to be oriented as desired by the user.

Figure 4-1. LOI Components
Mounting

Electronics Housing

(Cover Removed)

LOI Connector

LOI Board

LOI Module

Electronics Stack

l

a

c

i

t

y

l

a

n

A

37390027

http://www..raihome.com

Instruction Manual

IM-106-880C, OI

Hazardous Area OCX 8800

September 2009

LOI CONTROLS
Overview The LOI, shown in Figure 4-2, utilizes a bright blue gas-fluorescent display.

Intensity is adjustable. There is an Infrared LED source and a detector for
each key. The detectors can detect a finger placed above the button through
the glass window. There is no need to open the instrument in bad weather or
in hazardous areas in order to access the electronics.

It should be noted that the Hazardous Area OCX 8800 also uses HART or

OUNDATION Fieldbus communications, permitting access to all instrument

F
functionality anywhere the digital O
communicator.

Figure 4-2. LOI Assembly

Selection

Arrow

(Enter key)

signal terminates via a model 375 Field

2

Touch

Confirmation

LED

Selection

Arrow

E

Lockout

Notation

LK
AL

Analytical

Display

Window

Selection

Arrows

Status

Code

37390042

LOI Key Functions The gray (top left) key will move one level higher in the menu structure. When

entering parameter values (numbers), this key moves the cursor to the left.
The left-pointing key also doubles as an Enter key, used after the digits of a
parameter value are entered, and the cursor is moved to it s left-most po sition.
When the Enter key is touched, the new parameter value, if accepted, will
appear in the top line of the display.

The blue (bottom left) key acts as a selector when choo sing from among
several menu items. This right-pointing key also will move the cursor to the
right when entering the digits of a new parameter value.

4-2

The up and down-pointing keys are used to increment up and down when
selecting from a vertical list of menu items. These keys are also used for
incrementing values up and down for new data input.

Instruction Manual

IM-106-880C, OI
September 2009

Figure 4-3. ‘Z’ Pattern Entry

Hazardous Area OCX 8800

Lockout

The LOI has a lockout feature that prevents nuisance actuation by someone
brushing against the glass window, raindrops, dirt, insects, etc. This lockout
mode is automatically established when no buttons are pushed for 30
seconds (default). This countdown to lockout is configurable.

In order to unlock the display, input a "Z" pattern (Figure 4-3). First, touch the
top left (gray) Enter key. Next, touch the top right key, followed by the bottom
left key and the bottom right key. The LK notation in the upper right corner of
the display will disappear. Touch the Enter key once more to enter into the
menu structure. Whenever a key is touched additional time to lockout is
provided, so that the lockout feature does not beco m e a nuisa nc e. This
additional revert time is one hour (default) and is also user configurable.

NOTE

Always clean dust and soil away from the LOI screen each time the LOI is
used. Excessive dust can prevent the LOI from en te rin g lockout . Th is
condition can cause uncommanded oper at ion s to occu r.

1

E

Analytical

3

2

4

37390057

LOI Status Codes The LOI display shows a status code in the lower right hand corner of the

display. There are nine status codes to indicate the existing status of the
device during operation. The status code description s are shown in Table 4-1.

Table 4-1. LOI Status Codes

CODE DESCRIPTION

AL Alarm - The device is in a recoverable alarm state.
BL Blowback - A blowback cycle is active.
CA Calibration - A calibration cycle is active.
CV Calibration Verify - A calibration verify task is in progress.

NM Normal - The device is in a normal operating mode.
PO

SF

ST

WU Warm Up - The device heaters are ramping up to operating temperature.

CZ COe Zero - The COe Zero cycle is active.

Power On - A system level initialization sequence is active. This will continue for
several seconds.

System Fault - The device is in a non-recoverable alarm condition. The unit
must be reset or power must be cycled off and on to resume operation.

Stabilize - The device heater control is stabilizing (after warm up). Sensors are
warming up to operating temperature.

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Instruction Manual

IM-106-880C, OI

Hazardous Area OCX 8800

September 2009

LOI MENU TREE This section consists of a menu tree for the LOI on the Hazardous Ar ea OCX

8800, Figure 4-4. This menu is specific to the Hazardous Area OCX 8800.

First Column Submenus

From the operating display (O

% and COe ppm), the left-pointing Enter key is

2

the only option to move into the first column submenus of the LOI menu tree.
The first column contains three submenus: SENSOR DATA, Figure 4-4 sheet
1 of 4, CALIBRATION, sheet 2 of 4, and SYSTEM, sheets 3 and 4 of 4. From
the operating display, SENSOR DATA is displayed when the right-pointing
key is selected. Use the up or down-pointing key to move to the other first
column submenus.

Second Column Submenus

From the first column submenus, selecting the right-pointing key moves the
display into the second column submenus. The up and down-pointing keys
allow the display to move to the second column submenus of the first column
submenu selected. The left-pointing key moves the display back to the first
column submenu.

Third and Fourth Column Submenus

From the second column submenus, selecting the right-pointing key moves
the display into the third column submenus. The third column submenu may
be another menu or a list of parameters. The up- and down-pointing keys
allow the display to move to the different para meters or menus. The third or
fourth column submenu may be a parameter list. When a parameter list is
displayed, the cursor will blink. The up- and down-pointing keys select the
value for the parameter displayed.

Figure 4-4. LOI Menu Tree
(Sheet 1 of 4)

O2 X.XX%

%

Comb XXX ppm

%

SENSOR DATA

(CONTINUED ON

SHEET 2)

Temperatures

RawValues

Analog Outputs

O2 Temp _____dgC

O2 Temp-MAX _____dgC

COe Temp _____dgC

COe Temp-MAX _____dgC

SB Temp _____dgC

SB Temp-MAX _____dgC

Board Temp _____dgC

Board Temp-MAX _____dgC

CJC Temp _____dgC

CJC Temp-MAX _____dgC

O2 Sensor _____ mV

O2 Sensor R ____ ohm

O2 T/C _____ mV
COe Delta V _____ mV
COe Delta R

COe ReferenceV
COe Reference R

COe T/C

RTD Current _____ mA

Board Temp IC

CJC Temp Signal _____ mV

O2 Output % _____%

O2 Current ____mA

COe Output % _____%

COe Current ____mA

____ ohm

_____ mV

____ ohm

_____ mV

SB T/C _____ mV

_____ mV

37390007

4-4

Instruction Manual

IM-106-880C, OI
September 2009

Figure 4-4. LOI Menu Tree
(Sheet 2 of 4)

Hazardous Area OCX 8800

(CONTINUED FROM

SHEET 1)

CALIBRATION

(CONTINUED ON

SHEET 3)

Cal
Control

Abort Cal

Start Cal
O2

Start Cal
COe

Start Cal
Both

Apply Lo O2 Gas

Hit E when ready

Flow O2 Lo _____s

______% _____mV

Read O2 Lo _____s

______% _____mV

Apply Hi O2 Gas

Hit E when ready

Flow O2 Hi _____s

______% _____mV

Read O2 Hi _____s

______% _____mV

Hit E when ready

Purge _____s

Apply Lo COe Gas

Hit E when ready

Flow COe Lo _____s

______% _____mV

Read COe Lo _____s

______% _____mV

Apply Hi COe Gas

Hit E when ready

Flow COe Hi _____s

______% _____mV

Read COe Hi _____s

______% _____mV

Hit E when ready

Purge _____s

Apply Lo O2 Gas

Hit E when ready

Flow O2 Lo _____s

______% _____mV

Read O2 Lo _____s

______% _____mV

Apply Hi O2 Gas

Hit E when ready

Flow O2 Hi _____s

______% _____mV

Read O2 Hi _____s

______% _____mV

Hit E when ready

Purge _____s
Flow COe Hi _____s

______% _____mV

Read COe Hi _____s

______% _____mV

Hit E when ready

Purge _____s

Cal
Constants

Cal
Status

Cal
Verify

Current
Calib

Prev
Calib

Falied
Calib

Calib Result
Calib Step
Calib Time
Next O2 Cal
Next COe Cal

Flow High Gas
Flow Low Gas
Flow COe Gas
Purge
Status

O2 Slope _____mV/D
O2 Constant _____mV
O2 Sensor R _____ohm
COe Slope _____ppm/mV
COe Constant _____mV

Pre O2 Slope _____mV/D
Pre O2 Const _____mV
Pre O2 Sensor R _____ohm
Pre COe Slope _____ppm/mV
Pre COe Const _____mV

Bad O2 Slope _____mV/D
Bad O2 Const _____mV
Bad COe Slope _____ppm/mV
Bad COe Const _____mV

NOTE: “Hit E when ready” is displayed during

semi-automatic calibration only (when
Calib Setup value Use Solenoids = n).

37390015

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Hazardous Area OCX 8800

Figure 4-4. LOI Menu Tree
(Sheet 3 of 4)

Instruction Manual

IM-106-880C, OI
September 2009

4-6

Instruction Manual

IM-106-880C, OI
September 2009

Figure 4-4. LOI Menu Tree
(Sheet 4 of 4)

(CONTINUED FROM

SHEET 3)

SYSTEM

Parameters

Software

Status

Hazardous Area OCX 8800

O2 Slope ___ mV/D

O2 Constant ___ mV

O2 T90Time ___ seconds

COe Slope ___ ppm/ohm
COe Constant ___ ohm
COe T90Time ___ seconds

LockoutTime ___ seconds

Revert Time ___ minutes

Luminance

PCDC Enable ___ Y/N
PCNC Enable ___ Y/N

Version
Checksum
Build Number
Build Date
Restart Count
SW Err File
SW Err Line
SW Err Number

Alarms
CPLD Registers
Line Frequency
Line Voltage
PCD Counter
PCN Counter
Reset Device
Sensor Housing
Serial Number

___ %

37390056

4-7

Hazardous Area OCX 8800

Instruction Manual

IM-106-880C, OI
September 2009

4-8

Instruction Manual

IM-106-880C, OI
September 2009

Section 5 Calibration

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 5-1

Fully Automatic Calibration . . . . . . . . . . . . . . . . . . . . . . . . page 5-1

Operator - Initiated Autocalibration . . . . . . . . . . . . . . . . .page 5-3

Manual Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 5-4

D/A Trim Procedures - LOI . . . . . . . . . . . . . . . . . . . . . . . . .page 5-12

D/A Trim Procedures - HART . . . . . . . . . . . . . . . . . . . . . . .page 5-14

Hazardous Area OCX 8800

OVERVIEW During a calibration, two calibration gases with known O

one calibration gas with a known COe concentration are applied to the
Hazardous Area OCX 8800. Slope and constant values are calculated to
determine if the Hazardous Area OCX 8800 is correctly measuring net

and combustibles in the industrial process.

2

FULLY AUTOMATIC
CALIBRATION

concentrations of O
Before calibrating the Hazardous Area OCX 8800, verify that the calibration

gas parameters are correct by setting the test gas values used when
calibrating the unit. Refer to Section 3, Configuration and Startup.

There are three calibration methods available to the Hazardous Area OCX
8800; automatic, operator-initiated automatic, and manual. Calibration
commands and menus can be accessed by 375 Field Communicator or by
the optional LOI.

If the Hazardous Area OCX 8800 is equipped with calibration solenoids, the
unit can be programmed to automatically calibrate without any operator
action. Refer to the following paragraphs for using the LOI or 375 Field
Communicator to set up the OCX 8800 for fully automatic calibration.

Autocalibration Setup using the optional LOI

Use the following procedure to set up the Hazardous Area OCX 8800 for
automatic calibration. If necessary, use the LOI menu tree in Figure 4-4 for
reference. The unit must be equipped with calibration solenoids to use
automatic calibration.

concentrations and

2

http://www..raihome.com

NOTE

Automatic calibration is only available on units equipped with calibration
solenoids.

1. From the operating display use the right-pointing key to select SYSTEM
first column submenu.

2. From the SYSTEM first column submenu, use the right-pointing key to
select the Calib Setup second column submenu.

Hazardous Area OCX 8800

3. From the Calib Setup second column submenu, use the right-pointing
key to select the third column parameter list.

4. Scroll down to the last item Use Solenoids. If the unit is equipped with
calibration solenoids and timed automatic calibration is desired, select
Yes.

5. Use the up-pointing key to select the item O2 Out T racks. Select Yes or
No to determine if updates to the O

6. Use the down-pointing key to select the item COe Out Tracks. Select
Yes or No to define if updates to the COe lock value will take place.

7. Use the down-pointing key to select the item O2 Cal Interval. Enter the
amount of time in days and hours that is desired between automatic
calibrations.

8. Use the down-pointing key to select the next item O2 Next Cal. Enter
the amount of time in hours until the next automatic calibration. Select
the left-pointing key three times to move back to the LOI operating
display.

Autocalibration Setup using the Field Communicator - HART

Instruction Manual

IM-106-880C, OI
September 2009

lock value will take place.

2

NOTE

Automatic calibration is only available on units equipped with calibration
solenoids.

Use the following procedure to specify a time interval (in hours) at which the
Hazardous Area OCX 8800 will automatically calibrate.

1. From the DEVICE SETUP screen, select DETAILED SETUP.

2. From the DETAILED SETUP screen, select CAL SETUP, then select
O2 CAL PARAMS or COE CAL PARAMS.

3. If the unit is equipped with calibration solenoids and timed automatic
calibrations are desired, select Solenoids, then select Yes. Select No to
disable the calibration solenoids.

4. Select O2 Cal Intrvl (O
in hours between automatic O

calibration interval) and enter the desired time

2

calibrations. Select COE Cal Intrvl and

2

enter the desired time between automatic COe calibrations. To disable
automatic calibration for O

and COe, enter 0 for both Cal Intrvl

2

parameters.

5. If desired, the O2 Next Cal Time and the COe Next Cal Time (next
calibration time) parameters can be changed to synchronize a
calibration at a specific day or time.

5-2

When setting automatic calibration times, CalIntrvl and NxtCalTm should be set so that O2
and COe are NOT calibrated simultaneously.

Instruction Manual

IM-106-880C, OI
September 2009

Hazardous Area OCX 8800

NOTE

To select a menu item, either use the up and down arrow keys to scroll to the
menu item and press the right arrow key or use the number keypad to select
the menu item number.

To return to a preceding menu, press the left arrow key.

Autocalibration Setup using the Field Communicator - Fieldbus

NOTE

Automatic calibration is only available on units equipped with calibration
solenoids.

Use the following procedure to specify a time interval (in hours) at which the
Hazardous Area OCX 8800 will automatically calibrate.

1. From the Transducer screen select O2 Cal or COe Cal.

2. From the O2 Cal or COe Cal screen, select O2 Cal Setup or COe
Setup.

3. If the unit is equipped with calibration solenoids and timed automatic
calibration are desired, select Solenoids, then select Yes. Select No to
disable the calibration solenoids.

4. Select O2 Cal Interval and/or COe Cal Interval and enter the desired
time in hours between automatic calibrations . To disable automatic
calibration for O2 and COe, enter 0 for both Cal Interval parameters.

5. If desired, the O2 Next Cal and CO2 Next Cal (next calibration time)
parameters can be changed to synchronize a calibration at a specific
day or time.

OPERATOR - INITIATED
AUTOCALIBRATION

An operator can initiate an automatic calibration at any time provided that the
unit is equipped with calibration solenoids.

Autocalibration using the optional LOI

To initiate a calibration using the LO I, pe rf or m the fo llowin g steps on the LOI
menu tree. Refer to Section 4, Using the LOI, for the LOI menu tree.

1. From the CALIBRATION menu, use the right-pointing arrow to select
the Cal Control menu.

2. Select Start Cal-O2, Start Cal COe, or Start Cal Both to start the
calibration. Select Cal Verify to access the calibration window.

3. At the prompt, use the right-pointing arrow to initiate automatic
calibration.

Autocalibration using the Field Communicator - HART

To initiate an automatic calibration using 375 Field Communicator, perform
the following steps. Refer to Section 6, Field Communicator, for the HART
menu tree.

5-3

Hazardous Area OCX 8800

1. Select DIAG/SERVICE from DEVICE SETUP menu.

2. Select CALIBRATION from the DIAG/SERVICE menu.

3. Select CAL CONTROL from the CALIBRATION menu.

4. Select CAL METHODS from the CAL CONTROL menu.

5. From the CAL METHODS menu, select the type of calibration desired:

O2 Calibration,

COe Calibration, or
O2 and COe Calibration.

Autocalibration using the Field Communicator - Fieldbus

To initiate an automatic calibration using 375 Field Communicator, perform
the following steps. Refer to Section 6, Field Communicator, for the
FOUNDATION Fieldbus menu tree.

1. From Transducer screen select Methods.

2. Select OCX Calibration from the Methods menu.

3. From the OCX Calibration menu, select the type of calibration desired:

Instruction Manual

IM-106-880C, OI
September 2009

Calibrate O2 Sensor,
Calibrate Combustibles Sensor, or
Calibrate Both Sensors.

MANUAL CALIBRATION If a unit is not equipped with calibration solenoids, a calibration must be

performed by an operator following prompts from the unit. Refer to the
following paragraphs for manual calibration.

Manual Calibration using the optional LOI

Use the following procedure to perform a manual calibration with the LOI. If
necessary, refer to the menu tree in Section 4, Using the LOI. Once the
manual calibration procedure is initiated at the LOI, a series of prompts will
appear giving instructions to the operator.

1. Use the right-pointing key to select the CALIBRATION first column
submenu.

2. From the CALIBRATION submenu use the right-pointing key to select
the Cal Control second column submenu.

3. From the Cal Control submenu use the right-pointing key to select the
third column Start Cal O2 option.

4. Remain at the Start Cal O2 option or use the down-pointing key to
select the Start Cal COe option or Start Cal Both option. (The following
sequence applies when Start Cal Both is selected.)

5. Use the right-pointing key to start the calibration. T urn on the low O
gas, when prompted by the Flow Low Gas message.

6. Press the right-pointing key when the low O
calibration data changes as the calibration proceeds.

7. Press the right-pointing key when the low O
the low O
Flow High Gas message.

8. Press the right-pointing key when the high O
calibration data changes as the calibration proceeds.

test gas and turn on the high O2 test gas as prompted by the

2

test gas is applied. The

2

reading is stable. Turn off

2

test gas is applied. The

2

test

2

5-4

Instruction Manual

IM-106-880C, OI
September 2009

Hazardous Area OCX 8800

9. Press the right-pointing key when the high O2 reading is stable. Turn of f
the high O
purge.

10. When the purge period expires, the LOI display reverts to the nor mal
operation display. If the calibration failed, the display will indicate an
alarm condition.

11. Press the right-pointing key to start combustibles calibration. Turn on
the CO test gas when prompted.

12. Press the right-pointing key when the CO test gas is applied. The
calibration data changes as the calibration proceeds.

13. Press the right-pointing key when the CO reading is stable.

14. Turn off the CO test gas and press th e right-p ointing key to sta rt the CO
gas purge.

15. When the purge period expires, the LOI display reverts to the nor mal
operation display. If the calibration failed, the display will indicate an
alarm condition.

test gas. Press the right-pointing key to start the high O2 gas

2

Manual O

To perform a manual O
the following procedure. If necessary, refer to Section 6, Field Communicator,
for the HART menu tree.

NOTE

To select a menu item, either use the up and down arrow keys to scroll to the
menu item and press the right arrow key or use the number keypad to select
the menu item number.

To return to a preceding menu, press the left arrow key.

1. Select DIAG/SERVICE from DEVICE SETUP menu.

2. Select CALIBRATION from the DIAG/SERVICE menu.

3. Select CAL CONTROL from the CALIBRATION menu.

4. Select CAL METHODS from the CAL CONTROL menu.

5. From the CAL METHODS menu, select the type of calibration desired:

6. In the first Calibration screen, a Loop should be removed from

7. The Calibration screen should look like the following. Press OK to

Calibration using the Field Communicator - HART

2

calibration using the 375 Field Communicator, use

2

O2 Calibration

automatic control warning appears. Remove the Hazardous Area OCX
8800 from any automatic control loops to avoid a potentially dangerous
operating condition and press OK.

continue.

OCX: TAG NAME
STEP: Idle
TIME REMAIN: 0s
O2: 0.4 %
O2 Snsr: 85.95mV
OK/NEXT to Select
ABORT/CANCEL to Exit

5-5

Hazardous Area OCX 8800

8. From the SELECT ACTION screen, select START CAL/STEP CAL to
continue calibration, select ABORT CAL to abort calibration or EXIT
CAL to exit calibration. Select one item from the list and press ENTER.

9. When the Calibration Status is at the AppO2Low step, switch on O
Low Gas. Verify the O
GAS parameter in the Setup. Press OK when ready.

10. Select START CAL/STEP CAL to start applying the O
time to apply the test gas is specified by the Gas Time.

1 1. The Calibration Status should be automatically changed to FlowO2Low

and then ReadO2Low for a period of time. During this period, if an
attempt is made to go to the next calibration step by pressing OK and
selecting START CAL/STEP CAL, you will be prompted with Operator
step command is not accepted at this time.

12. When ready, Calibration Status will stop at the AppO2Hi. Switch off the

Low Gas and switch on the O2 High Gas. V erify the O2 concentration

O

2

measured matches the O2 HIGH GAS parameter in the Setup. Press
OK when ready.

13. Select START CAL/STEP CAL to start applying the O
time to apply the test gas is specified by the Gas Time.

14. The Calibration Status should be automatically changed to FlowO2Hi
and then ReadO2Hi for a period of time. During this perio d, if an attempt
is made to go the next calibration step by pressing OK and selecting

START CAL/STEP CAL, you will be prompted with Operator step
command is not accepted at this time.

15. When ready, Calibration Status will stop at STOP GAS. Switch off the

High Gas. Press OK when ready. Select START CAL/STEP CAL to

O

2

start purging gas. The time to purge gas is specified by the Purge T ime.

16. When the Purge step is complete, the Calibration S tatus will be at IDLE.
A Calibration Failed alarm will be set if the calibration has failed.

17. When calibration is complete. Select Exit Cal to exit the calibration
method.

OCX: TAG NAME
SELECT ACTION

1. START CAL/STEP CAL

2. ABORT CAL

3. EXIT CAL

concentration measured matches the O2 LOW

2

Instruction Manual

IM-106-880C, OI
September 2009

2

Low Gas. The

2

High Gas. The

2

5-6

Instruction Manual

IM-106-880C, OI
September 2009

Hazardous Area OCX 8800

Manual COe Calibration using the Field Communicator - HART

To perform a manual COe calibration using the 375 Field Communicator, use
the following procedure. If necessary, refer to Section 6, Field Communicator,
for the HART menu tree.

NOTE

To select a menu item, either use the up and down arrow keys to scroll to the
menu item and press the right arrow key or use the number keypad to select
the menu item number.

To return to a preceding menu, press the left arrow key.

1. Select DIAG/SERVICE from DEVICE SETUP menu.

2. Select CALIBRATION from the DIAG/SERVICE menu.

3. Select CAL CONTROL from the CALIBRATION menu.

4. Select CAL METHODS from the CAL CONTROL menu.

5. From the CAL METHODS menu, select the type of calibration desired:
COe Calibration, or

6. In the first Calibration screen, a loop should be removed from

automatic control warning appears. Remove the Hazardous Area
OCX 8800 from any automatic control loops to avoid a potantially
dangerous operating condition and press OK.

7. The main Calibration screen should look like the following. Press OK to

continue.

OCX: TAG NAME
STEP: Idle
TIME REMAIN: 0s
COe: 0.20 ppm
COe DELTA R: 0.00 ohm
OK/NEXT to Select
ABORT/CANCEL to Exit

8. From the SELECT ACTION screen, select START CAL/STEP CAL to

continue calibration, select ABORT CAL to abort calibration or EXIT

CAL to exit calibration. Select one item from the list and press ENTER.
OCX: TAG NAME

SELECT ACTION

1. START CAL/STEP CAL

2. ABORT CAL

3. EXIT CAL

9. The unit samples O

Status sho uld automatically change to ReadCOLow for a period of time.
During this period, if an attempt is made to go to the next calibration
step by pressing OK and selecting START CAL/STEP CAL, you will be
prompted with Operator step command is not accep te d at th is time.

10. When ready, Calibration Status will stop at the AppCOeHi. Switch on
the COe High Gas. Ve rify the COe concentration measured matches the
COe HIGH GAS parameter in the Setup. Press OK when ready.

High Gas as the COe Low Gas. The Calinration

2

5-7

Hazardous Area OCX 8800

11. Select ST ART CAL/STEP CAL to start applying the COe High Gas. The
time to apply the test gas is specified by the Gas Time.

12. The calibration status should automatically change to FlowCOeHI and
then ReadCOeHigh for a period of time. During this period, if an attempt
is made to go to the next calibration step by pressing OK and selecting

START CAL/STEP CAL, you will be prompted with Operator step
command is not accepted at this time.

13. When ready, Calibration Status will stop at STOP GAS, switch off the
COe High Gas. Press OK when ready. Select START CAL/STEP CAL
to start purging gas. The time to purge gas is specified by the Purge
time.

14. When the Purge step is complete, the Calibration S tatus will be at IDLE.
A Calibration Failed alarm will be set if the calibration has failed.

15. When calibration is complete. Select Exit Cal to exit the calibration
method.

Instruction Manual

IM-106-880C, OI
September 2009

Manual O

T o perform a manual O
AMS, use the following procedure. If necessary, refer to Section 6, Field
Communicator, for the HART menu tree.

NOTE

To select a menu item, either use the up and down arrow keys to scroll to the
menu item and press the right arrow key or use the number keypad to select
the menu item number.

To return to a preceding menu, press the left arrow key.

1. Select DIAG/SERVICE from DEVICE SETUP menu.

2. Select CALIBRATION from the DIAG/SERVICE menu.

3. Select CAL CONTROL from the CALIBRATION menu.

4. Select CAL METHODS from the CAL CONTROL menu.

5. From the CAL METHODS menu, select the type of calibration desired:

6. In the first Calibration screen, a Loop should be removed from

7. The main Calibration screen should look like the following. Press OK to

and COe Calibration using the Field Communicator - HART

2

and COe calibration using the Field Communicator or

2

O2 and COe Calibration.

automatic control warning appears. Remove the Hazardous Area

OCX 8800 from any automatic control loops to avoid a potentially
dangerous operating condition and press OK.

continue.

OCX: TAG NAME
STEP: Idle
TIME REMAIN: 0s
O2: 0.4 %, 85.95mV
COe: 0.20 ppm
OK/NEXT to Select
ABORT/CANCEL to Exit

5-8

Instruction Manual

IM-106-880C, OI
September 2009

Hazardous Area OCX 8800

8. From the SELECT ACTION screen, select START CAL/STEP CAL to
continue calibration, select ABORT CAL to abort calibration or EXIT

CAL to exit calibration method. Select one from the list and pr ess
ENTER.

OCX: TAG NAME
SELECT ACTION

1. START CAL/STEP CAL

2. ABORT CAL

3. EXIT CAL

9. When the Calibration Status is at the AppO2Low step, switch on O
Low Gas. Verify the O

concentration measured matches the O2 LOW

2

GAS parameter in Setup CAL. Press OK when ready.

10. Select START CAL/STEP to start applying the O

Low Gas. The time to

2

apply the test gas is specified by the Gas Time.

1 1. The Calibration S t atus should automatically change to FIowO2Low a nd

then ReadO2Low for a period of time. During this period, if an attempt
is made to go to the next calibration step by pressing OK and selecting

START CAL/STEP CAL, you will be prompted with Operator step
command is not accepted at this time.

12. When ready, Calibration Status will stop at AppO2Hi. Switch off the O
Low Gas and switch on the O

High Gas. Verify the O2 concentration

2

measured matches the O2 HIGH GAS parameter in Setup. Press OK
when ready.

13. Select START CAL/STEP CAL to apply the O

High Gas. The time to

2

apply the test gas is specified by the Gas Time.

14. The Calibration Status should automatically change to FlowO2Hi, then
ReadO2Hi, and then ReadCOeLo for a period of time. During this
period, if an attempt is made to go the next calibration step by pressing

OK and selecting START CAL/STEP CAL, you will be prompted with
Operator step command is not accepted at this time.

15. When ready , Calibration St atus will stop at AppCOeHi. Switch off the O
High Gas and switch on the COe Gas. Verify the COe concentration
measured matches the COe TEST GAS parameter in the Setup. Press
OK when ready.

16. Select START CAL/STEP CAL to start applying the COe Gas. The time
to apply the test gas is specified by the Gas Time.

17. The Calibration Status should automatically change to FlowCOeHi and
then ReadCOeHi for a period of time. During this period, if an attempt is
made to go the next calibration step by pressing OK and selecting

START CAL/STEP CAL, you will be prompted with Operator step
command is not accepted at this time. The Next Cal Step command

is not accepted at this time.

2

2

2

When ready, Calibration Status will stop at STOP GAS. Switch off the COe
gas. Press OK when ready. Select START CAL/STEP CAL to start purging
gas. The time to purge gas is specified by Purge Time.

5-9

Hazardous Area OCX 8800

Manual O2/COe Calibration using the Field Communicator - Fieldbus

Instruction Manual

IM-106-880C, OI
September 2009

To perform a manual O
use the following procedure. If necessary, refer to Section 6, Field
Communicator, for the Fieldbus menu tree.

NOTE

To select a menu item, either use the up and down arrow keys to scroll to the
menu item and press the right arrow key or use the number keypad to select
the menu item number.

To return to a preceding menu, press the left arrow key.

1. To calibrate from Fieldbus, the first step is to set the T ransducer Block to
Out of Service Mode (OOS).

2. T o set the OOS mode, select Transducer then select Process, followed
by select Out of Service in the Target Mode.

3. From Transducer screen select Methods.

4. Select OCX Calibration from the Methods menu.

5. From the OCX Calibration screen, select Calibrate O2 Sensor for O2
calibration, select Calibrate Combustibles Sensor for COe calibration,
or select Calibrate Both Sensors if calibrate both sensors is desired.

6. In the calibration screen, a Loop should be removed from automatic
control warning appears. Remove the device from any automatic
control loops to avoid a potentially dangerous operating cond ition and
press OK.

7. The Select Action screen should look like the following. From the
Select Action screen, select Update Display to refresh the calibration
status, select Next Calibration Step to continue calibration, select
Abort Calibration to abort calibration or Exit to exit calibration. Select
one item from the list and press OK. The Select Action screen is static
and data will not be automatically refreshed.

/COe calibration using the 375 Field Communicator,

2

5-10

Calibration Step = Idle
Step Time Remaining = 0 seconds
O2 Value = 0.40 %
Combustibles Value = 1000 ppm

1. Update Display

2. Next Calibration Step

3. Abort Calibration

4. Exit

8. The Calibration Screen should look like the following, press OK to
continue. The Calibration Screen should be automatically refreshed,
however it may take a while for the data to refresh.

Calibration Step = Apply O2 Low Gas
Step Time Remaining = 0 seconds
O2 Value = 0.40 %
Combustibles Value = 1000 ppm
Press Next for Selection

Instruction Manual

IM-106-880C, OI
September 2009

Hazardous Area OCX 8800

9. When the calibration status is at the Apply O2 Low Gas/ Apply Comb
Low Gas step, switch on O2 Low Gas/COe Low Gas. Verify the O2
concentration measured matches the O2 Low Gas parameter in the
setup. The unit samples reference air as the COe Low Gas. Press OK
when ready.

10. Select Next Calibration Step and press OK to start applying the test
gas. The time to apply the test gas is specified by the Gas Time.

1 1. The calibration step will change to Flow O2 Low Gas/ Flow Comb Low

Gas and then Read O2 Low Gas/ Read Comb Low Gas for a pe riod of
time.

12. When ready, Calibration S tep will stop at the Apply O2 High Gas/
Apply Comb High Gas. Switch off the O2 Low Gas/Sample Reference
Air and switch on the O2 High Gas/Comb Test Gas. Verify the O2/COe
concentration measured matches the O2 High Gas/COe Test Gas
parameter in the setup. Press OK when ready.

13. Select Next Calibration Step to start applying the test gas. The time to
apply the test gas is specified by the Gas Time.

14. The calibration step will change to Flow O2 High Gas/ Flow Comb
High Gas and then Read O2 High Gas/ Read Comb High Gas for a
period of time.

15. Skip over to Step 19, Stop Gas, if executing Calibrate O2 Sensor or
Calibrate Combustibles Sensor.

16. The calibration step will change to Read Comb Low Gas for a period of
time. When ready, Calibration Step will stop at Apply Comb High Gas.
Switch off the O2 High Gas and switch on the COe Test Gas. Verify the
COe concentration measured matches the COe Test Gas parameter in
the setup.

17. Select Next Calibration Step to start applying the test gas. The time to
apply the test gas is specified by the Gas Time.

18. The calibration step will change to Flow Comb High Gas and then
Read Comb High Gas for a period of time.

19. When ready, Calibration step will stop at Stop Gas. Switch off the O2
High Gas/COe Test Gas, Press OK when ready. Select Next Calibration
Step to start purging gas. The time to purge gas is specified by the
Purge Time.

20. When the Purge step is complete, the Calibration Step will be at Idle.
The Calibration Failed alarm will be set if the calibration has failed.

21. When calibration is complete. Select Exit to exit the calibration method.

5-11

Hazardous Area OCX 8800

Instruction Manual

IM-106-880C, OI
September 2009

D/A TRIM
PROCEDURES - LOI

O2 D/A trim procedure using the LOI

Use the following procedure to perform the O

D/A trim procedure at the LOI.

2

Refer to the LOI menu tree in Figure 4-4.

To avoid a potentially dangerous operating condition, the Hazardous Area OCX 8800 must
be removed from the automatic combustion control loop before you start the D/A trim proce­dure.

1. From the operating display use the left-pointing key to select the first
column submenu. Use the down-pointing key to select SYSTEM.

2. From the SYSTEM menu, use the down-pointing key to select
Input/Output. Use the right-pointing key to select the Analog
parameters list.

3. Scroll down to the item Trim O2 Out. Touch the right-pointing key to
start the O

trim procedure.

2

NOTE

If you wish to exit D/A Trim with no changes, step through the procedure using
yes responses, and enter no meter readings.

4. Remove the electronics housing cover.

5. Refer to Figure 2-6. Connect a digital multimeter to read the milliamp
output from the O

D/A converter circuit. Connect the positive lead to

2

the AOUT1+ terminal and connect the negative lead to the AOUT1­terminal. Then, touch the Enter key at the LOI.

6. The LOI displays 4 mA........Meter. The trim program inputs the

design-equivalent signal for a 4.00 mA output. Read the O

millamp

2

output at the digital multimeter. Use the right-pointing key to select each
digit and use the up- and down-pointing keys to change the value. When
the correct value is displayed, use the Enter key to input the value.

7. The LOI displays 20 mA........Meter. The trim program inputs the

design-equivalent signal for a 20.00 mA output. Read the O

millamp

2

output at the digital multimeter. Use the right-pointing key to select each
digit and use the up- and down-pointing keys to change the value. When
the correct value is displayed, use the Enter key to input the value.

8. The LOI displays a Meter at 4 mA prompt. Use the ri ght- po inting key to
select the letter yes or no. Use the up- or down-pointing key to change
the letter. Then use the Enter key to input the response. If no, the
process repeats from step 7.

9. The LOI displays a Meter at 20 mA prompt. Use the right-pointing key
to select the letter yes or no. Use the up- or down-pointing key to
change the letter . Then use the Enter key to input the response. If no,
the process repeats from step 8.

10. When the ropiness in steps 9 and 10 are yes, the trim procedure is
complete. Exit the LOI menu and return the control loop to automatic
control.

5-12

Instruction Manual

IM-106-880C, OI
September 2009

Hazardous Area OCX 8800

COe D/A trim procedure using the LOI

Use the following procedure to perform the COe D/A trim procedure at the
LOI. Refer to the LOI menu tree in Figure 4-4.

To avoid a potentially dangerous operating condition, the Hazardous Area OCX 8800 must
be removed from the automatic combustion control loop before you start the D/A trim proce­dure.

1. From the operating display use the left-pointing key to select the first
column submenu. Use the down-pointing key to select SYSTEM.

2. From the SYSTEM menu, use the down-pointing key to select

Input/Output. Use the right-pointing key to select the Analog
parameters list.

3. Scroll down to the item Trim COe Out. Touch the right-pointing key to

start the COe trim procedure.

NOTE

If you wish to exit D/A Trim with no changes, step through the procedure using
yes responses, and enter no meter readings.

4. Remove the electronics housing cover.

5. Refer to Figure 2-6. Connect a digital multimeter to read the milliamp

output from the COe D/A converter circuit. Connect the positive lead to
the AOUT2+ terminal and connect the negative lead to the AOUT2­terminal. Then, touch the Enter key at the LOI.

6. The LOI displays 4 mA........Meter. The trim program inputs the

design-equivalent signal for a 4.00 mA output. Read the COe millamp
output at the digital multimeter. Use the right-pointing key to select each
digit and use the up- and down-pointing keys to change the value. When
the correct value is displayed, use the Enter key to input the value.

7. The LOI displays 20 mA........Meter. The trim program inputs the

design-equivalent signal for a 20.00 mA output. Read the COe
output at the digital multimeter. Use the right-pointing key to select each
digit and use the up- and down-pointing keys to change the value. When
the correct value is displayed, use the Enter key to input the value.

8. The LOI displays a Meter at 4 mA prompt (question). Use the

right-pointing key to select the letter yes or no. Use the up- or
down-pointing key to change the letter. Then use the Enter key to input
the response. If no, the process repeats from step 7.

9. The LOI displays a Meter at 20 mA prompt (question). Use the

right-pointing key to select the letter yes or no. Use the up- or
down-pointing key to change the letter. Then use the Enter key to input
the response. If no, the process repeats from step 8.

10. When the ropiness in steps 9 and 10 are yes, the trim procedure is
complete. Exit the LOI menu and return the control loop to automatic
control.

millamp

5-13

Hazardous Area OCX 8800

Instruction Manual

IM-106-880C, OI
September 2009

D/A TRIM
PROCEDURES - HART

O2 D/A trim procedure using HART

Use the following procedure to perform the O
Field Communicator. If necessary, refer to Section 6, Field Communicator, for
the HART menu tree.

NOTE

To select a menu item, either use the up and down arrow keys to scroll to the
menu item and press the right arrow key or use the number keypad to select
the menu item number.

To return to a preceding menu, press the left arrow key.

1. From the DIAG/SERVICE menu, select D/A TRIM. Select O2 D/A Trim.

2. Press the right arrow key to start the procedure. (If you wish to exit D/A
Trim with no changes, select ABORT.)

3. The Field Communicator displays WARNING: Loop should be
removed from automatic control. Remove the Hazardous Area OCX
8800 from any automatic control loops to avoid a potentially dangerous
operating condition and press OK.

4. The Field Communicator displays Connect reference meter to O2
output.

5. Remove the electronics housing cover.

6. Refer to Figure 2-6. Connect a digital multimeter to read the milliamp
output from the O
the AOUT1+ terminal and connect the negative lead to the AOUT1­terminal. Then, press OK at the Field Communicator.

7. The Field Communicator displays Setting Fld dev output to 4 mA.
Press OK. Read the O
the reading at the Field Communicator and press ENTER. (Select
ABORT to exit without changes).

8. The Field Communicator displays Setting Fld dev output to 20 mA.
Press OK. Read the O
the reading at the Field Communicator and press ENTER. (Select
ABORT to exit without changes).

9. The Field Communicator displays Setting Fld dev output to 4 mA.
Press OK.

10. The Field Communicator displays Fld dev output 4.00 mA equal to
reference meter? Using the up or down arrow, select 1 Yes or 2 No
and Press ENTER. If No, the process repeats from step 6.

11. The Field Communicator displays Setting Fld dev output to 20 mA.
Press OK.

12. The Field Communicator displays Fld dev output 20.00 mA equal to
reference meter? Using the up or down arrow, select 1 Yes or 2 No
and Press ENTER. If No, the process repeats from step 7.

13. The Field Communicator displays NOTE: Loop may be returned to
automatic control.

D/A converter circuit. Connect the positive lead to

2

millamp output at the digital multimeter. Enter

2

millamp output at the digital multimeter. Enter

2

D/A trim procedure using the

2

5-14

Instruction Manual

IM-106-880C, OI
September 2009

Hazardous Area OCX 8800

COe D/A trim procedure using HART

Use the following procedure to perform the COe D/A trim procedur e using the
Field Communicator. If necessary, refer to Section 6, Field Communicator,
Field Communicator, for the HART menu tree.

NOTE

To select a menu item, either use the up and down arrow keys to scroll to the
menu item and press the right arrow key or use the number keypad to select
the menu item number.

To return to a preceding menu, press the left arrow key.

1. From the DIAG/SERVICE menu, select D/A TRIM. Press the up or
down arrow to select COe D/A Trim.

2. Press the right arrow key to start the procedure. (If you wish to exit D/A
Trim with no changes, select ABORT.)

3. The Field Communicator displays WARNING: Loop should be
removed from automatic control. Remove the Hazardous Area OCX
8800 from any automatic control loops to avoid a potentially dangerous
operating condition and press OK.

4. The Field Communicator displays Connect reference meter to
Combustibles output.

5. Remove the electronics housing cover.

6. Refer to Figure 2-6. Connect a digital multimeter to read the milliamp
output from the COe D/A converter circuit. Connect the positive lead to
the AOUT2+ terminal and connect the negative lead to the AOUT2­terminal. Then, press OK at the HART communicator.

7. The Field Communicator displays Setting Fld dev output to 4 mA.
Press OK. Read the COe
the reading at the Field Communicator and press ENTER. (Select
ABORT to exit without changes).

8. The Field Communicator displays Setting Fld dev output to 20 mA.
Press OK. Read the COe
the reading at the Field Communicator and press ENTER. (Select
ABORT to exit without changes).

9. The Field Communicator displays Setting Fld dev output to 4 mA.
Press OK.

10. The Field Communicator displays Fld dev output 4.00 mA equal to
reference meter? Using the up or down arrow, select 1 Yes or 2 No
and Press ENTER. If No, the process repeats from step 6.

11. The Field Communicator displays Setting Fld dev output to 20 mA.
Press OK.

12. The Field Communicator displays Fld dev output 20.00 mA equal to
reference meter? Using the up or down arrow, select 1 Yes or 2 No
and Press ENTER. If No, the process repeats from step 7.

13. The Field Communicator displays NOTE: Loop may be returned to
automatic control.

millamp output at the digital multimeter. Enter

millamp output at the digital multimeter. Enter

5-15

Hazardous Area OCX 8800

Instruction Manual

IM-106-880C, OI
September 2009

5-16

Hazardous Area OCX 8800

Instruction Manual

IM-106-880C, OI
September 2009

5-17

Hazardous Area OCX 8800

Instruction Manual

IM-106-880C, OI
September 2009

5-18

Instruction Manual

IM-106-880C, OI
September 2009

Hazardous Area OCX 8800

Section 6 Field Communicator

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 6-1

Field Communicator Connections . . . . . . . . . . . . . . . . . .page 6-1

Hart Menu Tree . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 6-4

Fieldbus Menu Tree . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page 6-8

OVERVIEW The 375 Field Communicator is a communication interface device. It support s

HART and Fieldbus devices letting you configure and troubleshoot in the field.
The 375 Field Communicator includes an LCD with touch-screen display and

keypad. Use touch-screen or keypad to enter dat a into 37 5 Field Commu nica­tor.

Three terminals for the lead set are on the top of th e 375 Field Commun icator.
The lead set and the terminals let you con nect the 375 Field Communica tor to
a device. An access door ensures only one pair of the terminals can be used
at any time. Several markings indicate which pair of terminals is for which pro­tocol. The "F" indicates the Fieldbus protocol while "H" indicates the HART
protocol.

FIELD COMMUNICATOR
CONNECTIONS

The infrared port (IrDA) lets the 375 Field Communicator interface with the
PC. IrDA is a PC interface supported for transfer of device descriptions (DD),
software update, configurations and application licenses. IrDA communication
can either be built into the PC or provided through a USB to IrDA adaptor . The
PC application can either be AMS Suite or 375 Easy Upgrade Programming
Utility. The 375 must be in the "Listen for PC" mode when communicating
through IrDA.

Refer to the 375 Field Communicator User Manual for details.

Connecting to a HART loop

Connect 375 Field Communicator with the supplied lead set in parallel with
the device or load resistor , Figure 6-1. The HART connections are not polarity
sensitive. A minimum 250 ohms resistance must be present in the HART loop
for the 375 Field Communicator to function properly.

Explosions can result in death or serious injury. Do not make connections to the Field
Communicator's serial port, digital signal line, or NiCad recharger jack in an explosive
atmosphere.

http://www..raihome.com

Hazardous Area OCX 8800

Figure 6-1. 375 Communicator Connections - HART

Instruction Manual

IM-106-880C, OI
September 2009

4-20 mA Terminal Block in

Electronics Housing

1

A OUT 1 +
A OUT 1 -

Loop

Connectors

Field Communicator

Rear Panel

³

RL 250W

O 4-20 mA Signal Line

2

Analog Output Device

Field

Communicator

Model 375

Lead Set

38850006

Connecting to a Fieldbus Segment

Connect 375 Field Communicator with the supplied lead set in parallel with
the device to a Fieldbus segment, Figure 6-2. The 375 Field Communicator
Fieldbus connections are polarity sensitive, an error message displays if the
device is connected incorrectly.

OFF-LINE AND ON-LINE
OPERATIONS

6-2

Explosions can result in death or serious injury. Do not make connections to the Field
Communicator's serial port, digital signal line, or NiCad recharger jack in an explosive
atmosphere.

The Field Communicator can be operated both off-line and on-line. Off-line
operations are those in which the communicator is not connected to the Haz­ardous Area OCX 8800. Off-line operations can include interfacing the Field
Communicator with a PC (refer to applicable Field Communicator document a­tion regarding Model 375/PC applications). In the on-line mode the communi­cator is connected to a fieldbus terminal block.

NOTE

If the Field Communicator is turned on while connected to the fieldb us
terminal block, an undefined status indication appears while the
communicator warms up. Wait until the warm-up period ends to continue.

The opening menu displayed on the LCD is different for on- line and off-line
operations. When powering up a disconnected (off-line) communicator the
LCD will display the Main Menu. When powering up a connected (on-line)
communicator the LCD will display the On-line Menu. Refer to the Field
Communicator manual for detailed menu information.

Instruction Manual

IM-106-880C, OI
September 2009

Figure 6-2. 375 Communicator Conections - Fieldbus

Hazardous Area OCX 8800

Fieldbus Signal

Fieldbus Digital Signal
Fieldbus Digital Signal

Terminal

Terminal

Connectors

OUT1 -

{

OUT1+

NOTE: Devices shown are not to scale.

Block

Terminals

OCX 8800 Electronics

#1

Fieldbus Computer

Terminal (PC)

FF

Field Communicator

Rear Panel

Field

Communicator

Model 375

Lead Set

39710006

6-3

Instruction Manual

IM-106-880C, OI

Hazardous Area OCX 8800

September 2009

HART MENU TREE This section provides a menu tree for the Field Communicat or. This menu is

specific to the Hazardous Area OCX 8800 applicat ion s.

Figure 6-3. HART Menu Tree (Sheet 1 of 4)

O2
COe

Process Variables

Sensor Values

Sensor Raw Inputs

O2 Raw Inputs

COE Raw Inputs

DEV Raw Inputs

O2 Temp
COe Temp
SB Temp
Brd Temp
CJC Temp

O2 Snsor
O2 T/C
O2 Snsor Imp

COe Delta V
COe Ref V
COe Delta R
Coe Ref R
COe T/C
RTD Current

SB T/C
Board Temp IC
CJC Temp Signal

DEVICE SETUP
O2
O2 AO
COe
COe AO

Output Variables

Sensor Limits

PV-AOUT

SV

TV

4V

O2

COe

PV is
O2
O2 AO
O2 AO %

SV is
COe
COe AO
COe AO %

TV is
O2 Temp

4V is
COe Temp

O2 O2

O2 Temp

COe COe

COe Temp

O2 USL
O2 LSL

O2 Temp
O2 TC USL
O2 TC LSL

COe USL
COe LSL

COe Temp
COe TC USL
COe TC LSL

6-4

(CONTINUED ON

SHEET 2)

39930012

Instruction Manual

IM-106-880C, OI
September 2009

Figure 6-4. HART Menu Tree (Sheet 2 of 4)

(CONTINUED FROM

SHEET 1 )

Hazardous Area OCX 8800

Diag/Service

Status

Calibration

Blowback

Loop Test

D/A Trim

Hardware

Max Temp

Operate Mode
Status Group 1
Status Group 2
Status Group 3
Status Group 4
Status Group 5
Status Group 6
AO Saturated
AO Fixed

Cal Control Cal Methods O2 Calibration

State
TimeRemain
O2
COe

Cal Constants

Cal Verify

BlBk State
Blowback

O2 Loop Test
COe Loop Test

O2 D/A Trim
COe D/A Trim

Model Number
Sensor Housing
CPLD Regs

Line Frequency
Line Voltage
PCN Counter
PCD Counter

O2 Temp Max
COe Temp Max
SB Temp Max
Board Temp Max
CJC Temp Max

Current Cal O2 Slope

Previous Cal

Failed Cal

Reset Cal Constant

Verify Calibration
State
TimeRemain
O2
COe

BCSR0
BCSR1
BCSR2
BCSR3
BCSR4
BCSR5

COe Calibration
O2 & COe Calibration

O2 Constant
Sensor Imp Cal
COe Slope
COe Constant

Prev O2 Slope
Prev O2 Constant
Prev Sensor Imp
Prev COe Slope
Prev COe Constant

Failed O2 Slope
Failed O2 Constant
Failed COe Slope
Failed COe Constant

Reset O2 CalConsts
Reset COe CalConsts

(CONTINUED ON

SHEET 3)

(CONTINUED ON

SHEET 3)

39930013

6-5

Hazardous Area OCX 8800

Figure 6-5. HART Menu Tree (Sheet 3 of 4)

(CONTINUED FROM

SHEET 2 )

Diag/Service

(continued)

Basic Setup

Detailed Setup

(CONTINUED ON

SHEET 4)

(CONTINUED FROM

SHEET 2 )

Heater PID

Device

Information

HART Information

S/W Version Info

Cal Setup

Input/Output

O2 PID

COe PID

SB PID

Date
Descriptor
Message
Final Asmbly Num
O2 Sensor S/N
COe Sensor S/N

Tag
Poll Addr
Dev ID
Num Req Preams
Fld Dev Rev

Version
Checksum
Build Number
Build Date
Restart Cntr

O2 Cal Params

COe Cal Params

Alarm Relay

Blowback

COe Zero

Instruction Manual

IM-106-880C, OI
September 2009

O2 Prop
O2 Int
O2 Duty Cycle
O2 Set Point
O2 Temp

COe Prop
COe Int
COe Duty Cycle
COe Set Point
COe Temp

SB Prop
SB Int
SB Duty Cycle
SB Set Point
SB Temp

Solenoids
Gas Time
Purge Time
O2 Out Tracks
O2 High Gas
O2 Low Gas
O2 Cal Intrv
O2 Next Cal Time
O2 Tol Check
Cal Rec Enable

Solenoids
Gas Time
Purge Time
COe Out Tracks
COe Test Gas
COe Cal Intrv
COe Next Cal Time
COe Slope Warn
COe Tol Check
Cal Rec Enable

O2 Analog OutputAnalog Output O2 AO Range

COe Analog Output

Alarm Relay State
Trig 1 Event
Trig 2 Event
Trig 3 Event

BlBk State
BlBk Enabled
BlBk Intrvl
BlBk Period
BlBk Purge Time

Zero State
Zero Enabled
Zero Intrvl
Zero Flow
Zero Purge
Zero Tracks
Zero Update

O2 URV
O2 LRV
O2 Alarm Level

COe AO Range
COe URV
COe LRV
COe Alarm Level

39930014

6-6

Instruction Manual

IM-106-880C, OI
September 2009

Figure 6-6. HART Menu Tree (Sheet 4 of 4)

(CONTINUED FROM

SHEET 3 )

Detailed Setup

(continued)

Review

Device Params

LOI Params

Device

Information

HART Information

Cal Setup

Input/Output

Device Params

LOI Params

Hazardous Area OCX 8800

O2 Slope
O2 Const
O2 T90
COe Slope
COe Const
COe T90
PCNC Enable
PCDC Enable

User Intface
Luminance
Lockout Time
Revert Time

Manufacturer
Model
Date
Descriptor
Message
Final Asmbly Num
O2 Sensor S/N
COE Sensor S/N
Hardware Rev
Software Rev

Tag
Poll Addr
Dev ID
Num Req Preams
Fld Dev Rev
Universal Rev

O2 Cal Setup Solenoids

COe Cal Setup Solenoids

O2 URV
O2 LRV
COe URV
COe LRV
O2 AO Range
COe AO Range
O2 Alarm Level
COe Alarm Level
Trig 1 Event
Trig 2 Event
Trig 3 Event
BlBk Enabled
BlBk Intrvl
BlBk Period
BlBk Purge Time
Zero Enabled
Zero Intrvl
Zero Flow
Zero Purge
Zero Tracks
Zero Update

O2 Slope
O2 Const
O2 T90
COe Slope
COe Const
COe T90
PCNC Enable
PCDC Enable

Luminance
Lockout Time
Revert Time

Gas Time
Purge Time
O2 Out Tracks
O2 Low Gas
O2 High Gas
O2 Cal Intrvl
O2 Next Cal Time
O2 Tol Check
Cal Rec Enable

Gas Time
Purge Time
COe Out Tracks
COe Test Gas
COe Cal Intrvl
COe Next Cal Time
COe Slope Warn
COe Tol Check
Cal Rec Enable

39930015

6-7

Instruction Manual

IM-106-880C, OI

Hazardous Area OCX 8800

September 2009

FIELDBUS MENU TREE This section consists of a menu for the Field Communicator. This menu is

specific for the Hazardous Area OCX 8800 Applications. Refer to the Fieldbus
Parameter Descriptions for the applicable range, units, an d description for the
fieldbus menu parameters.

Figure 6-7. Fieldbus Menu Tree (Sheet 1 of 3)

RESOURCE

Identification

Process*

Alarms

Hardware

Options

Continued with

Plant Web Alerts

Manufacturer ID
Device Type
Device Revision
DD Revision
Characteristics
Tag Description
Hardware Revision
Software Revision
Private Label Distributor
Final Assembly Number
Output Board

Serial Number

ITK Version

Block Mode: Actual
Block Mode: Target
Block Mode: Permitted
Strategy
Alert Key
Sched Remote Casacade
Sched Remote Out
Grant Deny: Grant
Grant Deny: Deny

Write Priority
Confirm Time
Limit Notify
Max Notify
Fault State
Set Fault State
Clear Fault State
Alarm Summary
Acknowledge Option

Memory Size
Free Time
Minimum Cycle Time
Hard Types
Nonvolatile Cycle Time
Free Space

Cycle Selection
Cycle Type
Feature Selection
Features
Download Mode
Write Lock
Write Lock Definition

Continued from

Options

PlantWeb Alerts

Simulate PWA

Simulate Status

PWA Status

PWA SubStatus

Status

*Note:

Contains information regarding
specific implementation for the
fieldbus. Refer to the fieldbus
documentation for further
information.

Failure Priority
Maintenance Priority
Advisory Priority
Failure Active
Maintenance Active
Advisory Active
Failure Enable
Maintenance Enable
Advisory Enable
Failure Mask
Maintenance Mask
Advisory Mask

PWA Simulate
Failure Active
Maintenance Active
Advisory Active

PWA Simulate
Detailed Status

Recommended Action
Health Index
Failure Alarm
Maintenance Alarm
Advisory Alarm

Failure Active
Failure Mask
Maintenance Active
Maintenance Mask
Advisory Active
Advisory Mask

Block Mode: Actual
Block Mode: Target
Resource State
Fault State
Block Error
Detailed Status
Summary Status
Alarm Summary

Value
Subcode
Time Start
Alarm State
Unacknowledge

Value
Subcode
Time Start
Alarm State
Unacknowledge

Value
Subcode
Time Start
Alarm State
Unacknowledge

TRANSDUCER
AI 1
AI 2
AI 3
AI 4
PID 1
ISEL
ARTHM
ADVANCED

6-8

See Sheet 2

Detail

Network

Management

Schedule

Physical Device Tag
Address
Device ID
Device Revision

Methods

Master Reset
Self Test
DD Version Info
Transmitter Options

39930009

Instruction Manual

IM-106-880C, OI
September 2009

Figure 6-8. Fieldbus Menu Tree (Sheet 2 of 3)

Process

O2

See Sheet 1

COe

RESOURCE
TRANSDUCER
AI 1
AI 2
AI 3
AI 4
PID
ISEL
ARTHM
ADVANCED

Temperatures

Hazardous Area OCX 8800

Block Mode: Actual
Block Mode: Target
Block Mode: Permitted
Strategy
Alert Key
Characteristics
Tag Description

O2 Primary Value
O2 Secondary Value
O2 Sensor Imp
O2 Primary Value Range:

EU at 100%

O2 Primary Value Range:

EU at 0%

O2 Secondary Value Range:

EU at 100%

O2 Secondary Value Range:

EU at 0%
O2 Sensor Type
O2 T90
O2 Cal Const

COe Primary Value
COe Secondary Value
COe Primary Value Range:

EU at 100%

COe Primary Value Range:

EU at 0%

COe Secondary Value Range:

EU at 100%

COe Secondary Value Range:

EU at 0%
COe Sensor Type
COe T90
COe Cal Cons

O2 Secondary Value
COe Secondary Value
SB Temp
Board Temp
CJC Temp
O2 Temp Max
COe Max
SB Temp Max
Board Temp Max
CJC Temp Max
Heater Control

O2 Slope
O2 Constant
O2 Impedance Cal
Prev O2 Slope
Prev O2 Constant
Prev O2 Impedence
Failed O2 Slope
Failed O2 Constant

COe Slope
COe Constant
Prev COe Slope
Prev COe Constant
Failed COe Slope
Failed COE Constant

O2 Set Point
O2 Duty Cycle
COe Set Point
COe Duty Cycle
SB Set Point
SB Duty Cycle

Raw Inputs

Continued

with O2 Cal

Sheet 3

O2 Sensor
O2 Sensor Imp
COe Delta Resistance
COe Reference Ohms
COe RTD Current
O2 T/C
COe T/c
SB T/C
Board Temp IC
CJC Temp Signal

39930010

6-9

Hazardous Area OCX 8800

Figure 6-9. Fieldbus Menu Tree (Sheet 3 of 3

continued from

Raw Inputs

Sheet 2

Instruction Manual

IM-106-880C, OI
September 2009

O2 Cal

COe Cal

Cal Status

Verify Status

O2 Cal Setup

O2 Sensor Cal Date
O2 Sensor Cal Loc
O2 Sensor Cal Who

Cal Status

Verify Status

COe Cal Setup

COe Sensor Cal Date
COe Sensor Cal Loc
COe Sensor Cal Who

O2 Primary Value
COe Primary Value
Cal State
Cal Time Remain
Calibration Results

O2 Primary Value
CO2 Primary Value
Verify State
Verify Time Remain

Solenoids
Gas Time
Purge Time
Cal Recommended
O2 High Gas
O2 Low Gas
O2 Cal Interval
O2 Next Cal
O2 Tolerance Check

O2 Primary Value
COe Primary Value
Cal State
Cal Time Remain
Calibration Results

O2 Primary Value
CO2 Primary Value
Verify State
Verify Time Remain

Solenoids
Gas Time
Purge Time
COe Test Gas
Cal Recommended
COe Cal Interval
COe Next Cal
COe Slope Warning
COe Tolerance Check

Continued from

Alarm Relay

Blow Back

COe Zero

Other

Simulate Status

Status

Methods

COe Zero State
COe Zero Enable
COe Zero Interval
COe Duration
COe Zero Purge Time
COE Zero Output Track
COe Zero Update

Operating Mode
Sensor Housing Type
Line Voltage
Line Frequency
Version
Build Number
Checksum
Build Date

Tb Detailed Status 1
Tb Detailed Status 2

Block Mode: Actual
Transducer Error
Static Revision
Block Error
Tb Detailed Status 1
Tb Detailed Status 2
Stats Attempts
Stats Failure

OCX Calibration
OCX Verify
Reset Max Temperature

(For Service Only)

Alarm Relay

Blow Back

Continued

with COe Zero

6-10

Blow Back

Alarm Relay

Blowback State
Blowback Enabled
Blowback Interval
Blowback Duration
Blowback Purge Time
Initate Blowback

Alarm Relay State
Alarm Relay Event1
Alarm Relay Event2
Alarm Relay Event3

39930011

Instruction Manual

IM-106-880C, OI
September 2009

Hazardous Area OCX 8800

Section 7 Foundation Fieldbus

Foundation Fieldbus Technology . . . . . . . . . . . . . . . . . . .page 7-1

Resource Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 7-6

Transducer Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page 7-13

Analog Input (AI) Function Block . . . . . . . . . . . . . . . . . . .page 7-23

Proportional/ Integral/Derivative (PID) Function Block . . page 7-35

Arithmetic (ARTHM) Function Block . . . . . . . . . . . . . . . . .page 7-51

Input Selector (ISEL) Function Block . . . . . . . . . . . . . . . .page 7-57

Operation with Emerson Process Management DeltaV . page 7-62

FOUNDATION FIELDBUS
TECHNOLOGY

Overview FOUNDATION Fieldbus is an all digital, serial, two-way communication system

that interconnects field equipment such as sensor s, ac tu at or s, an d
controllers. Fieldbus is a Local Area Network (LAN) for instru ments used in
both process and manufacturing automation with built-in capacity to distribute
the control application across the network. It has the ability to distribute
control among intelligent field devices on the plant floor and digitally
communicate that information at high speed that makes F
Fieldbus an enabling technology.

OUNDATION

TM

EMERSON offers a full range of products from field devices to the DeltaV
scalable control system to allow an easy transition to Fieldbus technology.

The Fieldbus retains the features of the 4-20 mA analog system, including
standardized physical interface to the wire, bus powere d de vic es on a sing le
wire, and intrinsic safety options, and enables additional capabilities such as:

• Increased capabilities due to full digital communications.

• Reduced wiring and wire terminations due to multiple devices on one
set of wires.

• Increased selection of suppliers due to interoperability.

• Reduced loading on control room equipment with the distribution of
some control and input/output functions to field devices.

• Speed options for process control and manufacturing applications.

http://www..raihome.com

Instruction Manual

IM-106-880C, OI

Hazardous Area OCX 8800

NOTE:

The following descriptions and definitions are not intended as a training guide

OUNDATION Fieldbus technology but are presented as an overview for

for F
those not familiar with Fieldbus and to define device specific attributes for the
Fieldbus system engineer. Anyone attempting to implement Fieldbus
communications and control with this analyzer must be well versed in
Fieldbus technology and protocol an d m ust be co mpe t en t in pr og ra m m ing
using available tools such as DeltaV. See “References” below for additional
sources for Fieldbus technology and methodology.

September 2009

Introduction A Fieldbus system is a distributed system composed of field devices and

control and monitoring equipment integrated into the physical environ ment of
a plant or factory. Fieldbus devices work together to provide I/O and control
for automated processes and operations. The Fieldbus Foundation provides a
framework for describing these systems as a collection of physical devices
interconnected by a Fieldbus network. One of the ways that the physical
devices are used is to perform their portion of the total system op eration by
implementing one or more function blocks.

Function Blocks

Function blocks within the Fieldbus device perform the various functions
required for process control. Because each system is different, the mix and
configuration of functions are different. Therefore, the Fieldbus FOUNDATION
has designed a range of function blocks, each addressing a different need.

Function blocks perform process control functions, such as analog input (AI)
and analog output (AO) functions as well as proportional-integral-derivative
(PID) functions. The standard function blocks provide a common structure for
defining function block inputs, outputs, control parameters, events, alarms,
and modes, and combining them into a process that can be implemented
within a single device or over the Fieldbus network. This simplifies the
identification of characteristics that are common to function blocks.

The Fieldbus F
small set of parameters used in all function blocks called universal
parameters. The F
block classes, such as input, output, control, and calculation blocks. Each of
these classes also has a small set of parameters est ablished for it. They have
also published definitions for tran sducer b locks commonly used with st andard
function blocks. Examples include temperature, pressure, level, and flow
transducer blocks.

OUNDATION specifications and d efinitions allow vendors to add their own

The F
parameters by importing and subclassing specified classes. This approach
permits extending function block definitions as new requirements are
discovered and as technology advances.

OUNDATION has established the function blocks by defining a

OUNDATION has also defined a standard set of function

7-2

Figure 7-1 illustrates the internal structure of a function block. When
execution begins, input parameter values from other blocks are sna pped-in by
the block. The input snap process ensures that these values do not change
during the block execution. New values received for these parameters do not
affect the snapped values and will not be used by the function block during
the current execution.