Emerson Rosemount OCX 8800 Bedienungsanleitung

Quick Start Guide

00825-0200-4880, Rev AD

February 2020

Rosemount™ OCX8800 Oxygen and

Combustibles Transmitter

with FOUNDATION™ Fieldbus Protocol

Essential instructions

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.

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

•Install equipment as specified in the installation instructions of the appropriate Reference Manual

and per applicable local and national codes. Connect all products to the proper electrical and

pressure sources.

Symbols

Earth (ground) terminal

Protective conductor terminal

Risk of electrical shock

Refer to reference manual.

Contents

Description and specifications......................................................................................................3

Installation................................................................................................................................... 4

Configuration and startup.......................................................................................................... 31

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

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

Product certifications................................................................................................................. 47

Declaration of Conformity..........................................................................................................52

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

Quick Start Guide February 2020

2 Rosemount OCX8800

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.

Optional accessories provides a list of accessories for use with the

Rosemount OCX8800.

February 2020 Quick Start Guide

Quick Start Guide 3

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 Essential instructions.

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 February 2020

4 Rosemount OCX8800

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.

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.

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. #unique_11/unique_11_Connect_42_fig_rds_cc3_5jb

through #unique_11/unique_11_Connect_42_fig_a2b_pl3_5jb provide

mechanical installation references.

February 2020 Quick Start Guide

Quick Start Guide 5

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.

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 Installation

Procedure

1. Ensure all components are available to install the Rosemount

OCX8800. Refer to Figure 1-1

2. The Rosemount OCX8800 may be installed intact as it is received.

3. Weld or bolt adapter plate onto the duct.

4. 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.

5. Ensure the conduits drop vertically from the Rosemount OCX8800

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.

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

all pneumatic lines prior to installing the Rosemount OCX8800 in the

stack or ductwork.

Quick Start Guide February 2020

6 Rosemount OCX8800

Note

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

compound on stud threads to ease future removal of the Rosemount

OCX8800.

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

mounting flange and bolt the unit to the flange.

Note

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 Rosemount OCX8800

mounting, make sure to replace insulation afterward.

February 2020 Quick Start Guide

Quick Start Guide 7

Example

Figure 2-1: Installation, Rosemount OCX8800 with Integral Electronics

A. Alarm output relay terminal block

B. FOUNDATION™ fieldbus

C. HART®

D. Signal output terminal block

E. Ground stud

F. Earth ground typical for electronics and sensor housing

G. Ground

H. Customer wiring

I. Terminal block

Quick Start Guide February 2020

8 Rosemount OCX8800

J. EMI filter

K. External tooth lockswasher

L. Signal port ¾ NPT

M. Power port ¾ NPT

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.

WARNING

To meet the Safety Requirements of IEC 61010 (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.

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 2-2.

Note

Line voltage, signal, and relay wiring must be rated for at least 221 °F

(105 °C).

February 2020 Quick Start Guide

Quick Start Guide 9

2.3.1 Electrical connections

Make electrical connections, power, and communications to the electronics

enclosure through two ¾ national pipe thread (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.

2.3.2 Connect line voltage

The transmitter operates on 100 to 240 Vac line voltage at 50 to 60 Hz. The

power supply requires no setup.

Connect the line (L wire) to the L terminal and the neutral (N wire) to the N

terminal on the AC power input terminal block in the electronics housing.

Connect the ground (G wire) to the ground stud in the electronics housing as

shown in Figure 2-2.

2.3.3 Connect output signals

The transmitter comes with a single FOUNDATION™ Fieldbus signal.

Connect the output terminals in the electronics housing as shown in Figure

2-2.

Use individual shielded twisted wire pairs. Terminate the shield at the

electronics housing.

2.3.4 Oxygen (O2) 4-20 mA signal

One 4-20 mA signal represents the O2 value.

Superimposed on the O2 signal is the FOUNDATION™ Fieldbus information

accessible through a handheld communicator or AMS Device Manager

software.

The O2 signal is at the AOUT 1 terminals.

2.3.5 Combustibles equivalent (COe) 4-20 mA signal

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

2.3.6 FOUNDATION™ Fieldbus signal

The FOUNDATION Fieldbus signal provides all output information and is

accessible through a Handheld Communicator.

2.3.7 Alarm output relay

Connect any customer-supplied relay input to the alarm output relay

terminal. Use shielded wire and terminate the shield at the electronics

Quick Start Guide February 2020

10 Rosemount OCX8800

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