Emerson Rosemount 6888A User manual

Quick Start Guide

00825-0100-4890, Rev AC

October 2022

Rosemount™ 6888A

In Situ Oxygen Analyzer

Safety instructions

WARNING

Follow installation guidelines.

Failure to follow these installation guidelines could result in death or serious injury. If this equipment is

used in a manner not specified by the manufacturer, the protection it provides against hazards may be

impaired.

Follow all warnings, cautions, and instructions marked on and supplied with the product.

Install equipment as specified in this document.

Ensure that only qualified personnel perform the installation, operation, and maintenance of the

product.

Inform and educate your personnel in the proper installation, operation, and maintenance of the

product.

Follow appropriate local and national codes.

If you do not understand any of the instructions, contact your Emerson representative for

clarification.

WARNING

Explosions

Do not open when an explosive atmosphere may be present.

WARNING

Electrical shock

Do not open while energized.

WARNING

Connect all devices 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.

CAUTION

For the standard housing probe and direct replacement probe, only use supply cables and certified

cable glands rated >105 °C.

For the autocalibration housing, only use supply cables and certified cable glands rated > 85 °C.

Quick Start Guide October 2022

2 Emerson.com/Rosemount

NOTICE

Use only factory documented components for repair. Tampering or unauthorized substitution of parts

and procedures can affect the performance and cause unsafe operation of your process.

NOTICE

The Field Communicator must be upgraded to System Software 2.0 with graphic license for operation

with the Rosemount 6888A Analyzer. The AMS software must be upgraded to AMS 8.0 or above.

Contact Emerson's Global Service Center (GSC) at +1-800-833-8314 to upgrade the Field

Communicator software to System Software 2.0 with graphic license.

Symbols

Earth (ground) terminal

Protective conductor terminal

Risk of electrical shock

Refer to reference manual.

Contents

Installation................................................................................................................................... 5

Configuration, start-up, and operation.......................................................................................34

Product certifications................................................................................................................. 41

Declaration of Conformity..........................................................................................................44

China RoHS table........................................................................................................................46

October 2022 Quick Start Guide

Quick Start Guide 3

Quick Start Guide October 2022

4 Emerson.com/Rosemount

1 Installation

CAUTION

Equipment damage

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

voltage (SELV) type.

October 2022 Quick Start Guide

Quick Start Guide 5

1.1 Install probe

Most combustion processes run only slightly negative or positive in pressure,

so that the probe flange is for mechanical mounting only. The probe is not

rated for high pressures. If this is a new installation, a weld plate for welding

to the flue gas duct can be supplied.

WARNING

Electrical shock

Failure to install covers and ground leads could result in serious injury or

death.

Install all protective covers and ground leads after installation.

WARNING

Hazardous areas

The analyzer can be installed in general purpose areas only.

Do not install the analyzer in hazardous areas or in the vicinity of flammable

liquids.

Procedure

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

If using the optional ceramic or Hastelloy diffusion element, make

sure to orient the vee deflector correctly.

Quick Start Guide October 2022

6 Emerson.com/Rosemount

2. Before inserting the probe, check the direction of gas flow in the

duct. Orient the vee deflector so the apex points upstream toward

the flow.

See Figure 1-1.

Figure 1-1: Orienting the optional vee deflector

A. Gas flow direction

B. Vee deflector

C. Diffusion element

D. Set screw

E. Vee deflector

F. Filter

G. Apex

3. If using the standard square weld plate or an optional flange

mounting plate, weld or bolt the plate onto the duct.

The through hole diameter in the stack or duct wall and refractory

material must be at least 2.5 in (64 mm).

NOTICE

Emerson recommends an abrasion-resistant probe tube or

traditional abrasive shield for high velocity particulates in the flue

stream (such as those in coal -fired boilers, kilns, and recovery

boilers). Vertical and horizontal brace clamps are provided for 9 ft

(2.74 m) through 12 ft (3.66 m) probes to provide mechanical

support for the probe.

October 2022 Quick Start Guide

Quick Start Guide 7

Figure 1-2: Rosemount 6888A probe with standard terminations/

electronic housing

A. Dimension (see Table 1-1)

B. Dimension (see Table 1-1)

C. Standard tube

D. Abrasion resistant tube

Note

All dimensions are in inches with millimeters in parentheses.

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8 Emerson.com/Rosemount

Figure 1-3: Rosemount 6888A integral autocalibration housing

A. Dimension (see Table 1-1)

B. Hastelloy diffuser

C. Ceramic diffuser

D. Standard tube

E. Abrasion tube

F. Minimum removal length

Note

All dimensions are in inches with millimeters in parentheses.

October 2022 Quick Start Guide

Quick Start Guide 9

Figure 1-4: Rosemount 6888A integral autocalibration housing

close-up

A. Dimension (see Table 1-1)

B. Reference air vents

C. Calibration gas ¼-in tube fittings 5.0 scfh (2.4 L/min) 20 psig

(1.38 barg)

D. #10 socket head cap screw (external ground)

E. ½-in. NPT conduit connection (power, signal)

F. Reference gas ¼-in. tube fitting 2.0 scfh (1.0 L/min) 20 psig

(1.38 barg)

Note

All dimensions are in inches with millimeters in parentheses.

Table 1-1: Insertion and removal dimensions

Probe length(1) Dimension A

insertion depth

Dimension B

removal envelope

standard housing

Dimension B

removal envelope

accessory housing

18 in (457 mm) probe 16.1 in (409 mm) 15.77 in (400.6 mm) 19.26 in (489.2 mm)

3 ft (0.91 m) probe 33.52 in (851.4 mm) 46.6 in (1,184 mm) 50.1 in (1,273 mm)

6 ft (1.83 m) probe 68.52 in

(1,740.4 mm)

82.6 in (2,098 mm) 86.1 in (2,187 mm)

Quick Start Guide October 2022

10 Emerson.com/Rosemount

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