Emerson Rosemount OCX 8800 Manuale utente

Quick Start Guide

00825-0100-4880, Rev AE

July2023

Rosemount™ OCX8800 Oxygen and

Combustibles Transmitter

with 4–20 mA HART® Protocol

Safety information

Emerson designs, manufactures, and tests its products to meet many national and

international standards. Because these instruments are sophisticated technical products, you

must properly install, use, and maintain them to ensure they continue to operate within

their normal specifications. You must adhere to the following instructions and integrate them

into your safety program when installing, using, and maintaining Emerson's Rosemount

products.

WARNING

Failure to follow the proper instructions may cause any one of the following situations to

occur: loss of life, personal injury, property damage, damage to this instrument, and

warranty invalidation.

Read all instructions prior to installing, operating, and servicing the product.

WARNING

Install equipment as specified in the installation instructions of the appropriate manual and

per local and national codes. connect all products to the proper electrical and pressure

sources.

WARNING

Physical access

Unauthorized personnel may potentially cause significant damage to and/or

misconfiguration of end users’ equipment. This could be intentional or unintentional and

needs to be protected against.

Physical security is an important part of any security program and fundamental to protecting

your system. Restrict physical access by unauthorized personnel to protect end users' assets.

This is true for all systems used within the facility.

Symbols

Earth (ground) terminal

Protective conductor terminal

Risk of electrical shock

Refer to manual.

Contents

Description and specifications................................................................................................... 5

Quick Start Guide July2023

2 Emerson.com/Rosemount

Installation.................................................................................................................................... 6

Configuration and startup........................................................................................................ 30

Using the local operator interface (LOI)..................................................................................38

Calibration...................................................................................................................................41

Product certifications................................................................................................................ 49

Declaration of Conformity........................................................................................................ 53

China RoHS table........................................................................................................................55

July2023 Quick Start Guide

Quick Start Guide 3

Quick Start Guide July2023

4 Emerson.com/Rosemount

1 Description and specifications

1.1 Component checklist

Check the model number of your Rosemount OCX8800 against the

transmitter features and options, making sure options specified by

this number are on or included with the unit. Use this complete

model number for any correspondence with Emerson.

July2023 Quick Start Guide

Quick Start Guide 5

2 Installation

2.1 Product safety

WARNING

Safety instructions

Failure to follow the safety instructions could result in serious injury

or death.

Before installing this equipment, read Safety information.

WARNING

Hazardous areas

The Rosemount OCX88A can be installed in general purpose areas

only. The Rosemount Xi Advanced Electronics can be installed in

general purpose areas only.

Do not install the Rosemount OCX88A in hazardous areas.

Do not install the Rosemount Xi in hazardous areas or in the

vicinity of flammable liquids.

WARNING

Hazardous areas

The Rosemount OCX88C may explode in hazardous areas.

All cable entry devices and blanking elements for unused

apertures must be certified flameproof, suitable for the conditions

of use, and properly installed.

The sensor housing must not be mounted to any surface or flange

that exceeds 383 °F (195 °C).

The sample entering the sensor housing must not exceed 383 °F

(195 °C).

Quick Start Guide July2023

6 Emerson.com/Rosemount

WARNING

Electrical shock

Failure to install covers and ground leads could result in serious

injury or death.

Install all protective equipment covers and ground leads after

installation.

If external loop power is used, the power supply must be a safety

extra low voltage (SELV) type.

Note

Plug all unused ports on the probe housing and Rosemount Xi

enclosure with a suitable filling.

2.2 Mechanical installation

2.2.1 Select a location

The location of the transmitter in the stack or flue is important

for maximum accuracy in the oxygen analyzing process. You must

position the probe so the gas it measures is representative of the

process.

For best results, position the transmitter near the center of the

duct (40 to 60 percent insertion). Longer ducts may require several

transmitters since the oxygen and combustibles can vary due to

stratification. A point too near the wall of the duct or the inside radius

of a bend may not provide a representative sample because of the

very low flow conditions. Select the sensing point so the process gas

temperature falls within the range of probe material used.

CAUTION

Damage to the electronics may result.

Do not allow the temperature of the electronics housing to exceed

185 °F (85 °C).

CAUTION

Failure to connect the pneumatic lines can allow the flow of

contaminants into the transmitter's ports.

Whenever a positive stack pressure exists at the installation site, be

sure to connect all pneumatic lines prior to installing the transmitter

in the stack or ductwork.

July2023 Quick Start Guide

Quick Start Guide 7

Procedure

1. Check the flue or stack for holes and air leakage.

The presence of this condition will substantially affect the

accuracy of the oxygen and combustibles readings. Make the

necessary repairs or install the transmitter upstream of any

leakage.

2. Ensure the area is clear of internal and external obstructions

that will interfere with installation and maintenance access to

the transmitter.

Allow adequate clearance for the removal of the transmitter.

2.2.2 Install the transmitter

Procedure

1. Ensure all components are available to install the transmitter.

You can install the transmitter intact as it is received.

2. Weld or bolt adapter plate onto the duct.

3. Use the pipe or wall mounting hardware to mount a remote

electronics housing. Choose a location that does not exceed

the length of the electronics cable ordered.

Quick Start Guide July2023

8 Emerson.com/Rosemount

4. Ensure the conduits drop vertically from the transmitter and

the conduit is routed below the level of the conduit ports on

the housing to form a drip loop.

Drip loops minimize the possibility that moisture will damage

the electronics.

Figure 2-1: Installation with drip loops

A. Duct wall

B. Conduit drip loops

5. Where a positive stack pressure exists at the installation site,

connect all pneumatic lines prior to installing the transmitter

in the stack or ductwork.

July2023 Quick Start Guide

Quick Start Guide 9

CAUTION

If process temperatures will exceed 392 °F (200 °C), use anti-

seize compound on stud threads to ease future removal of the

transmitter.

6. Insert sample and exhaust tubes through the opening in the

mounting flange and bolt the unit to the flange.

CAUTION

Uninsulated stacks or ducts may cause ambient temperatures

in the electronics housing to exceed 185 °F (85 °C) and

damage the electronics.

If insulation is removed to access the duct for mounting the

transmitter, make sure to replace the insulation afterward.

7. If insulation is removed to access the duct for mounting the

transmitter, make sure to replace insulation afterward.

2.3 Electrical installation

All wiring must conform to local and national codes. Figure 2-2 shows

factory wired solenoid power connections.

WARNING

Failure to install covers and ground leads could result in serious

injury or death.

Install all protective equipment covers and safety ground leads after

installation.

Quick Start Guide July2023

10 Emerson.com/Rosemount

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