Emerson Rosemount 6888C Manuel utilisateur
Quick Start Guide
00825-0100-4891, Rev AB
October 2019
Rosemount™ 6888C In-Situ Combustion
Oxygen Analyzer
For use in Hazardous Areas
NOTICE
This guide provides basic guidelines for Rosemount 6888 In-Situ Oxygen Analyzers. It does not provide
instructions for configuration, diagnostics, maintenance, service, troubleshooting, or flame-proof
installations. Refer to the Rosemount 6888C Manual for more instruction.
Essential instructions
Read this page before proceeding!
Emerson™ designs, manufactures, and tests its products to meet many national and international
standards. Because these instruments are sophisticated technical products, you must properly install,
use, and maintain them to ensure they continue to operate within their normal specifications. The
following instructions must be adhered to and integrated into your safety program when installing,
using, and maintaining Emerson products. Failure to follow the proper instructions may cause any one
of the following situations to occur: loss of life, personal injury, property damage, damage to this
instrument, and warranty invalidation.
•Read all instructions prior to installing, operating, and servicing the product.
•If you do not understand any of the instructions, contact your Emerson representative for
clarification.
•Follow all warnings, cautions, and instructions marked on and supplied with the product.
•Inform and educate your personnel in the proper installation, operation, and maintenance of the
product.
•Install equipment as specified in the installation instructions of the appropriate instruction manual
and per applicable local and national codes. Connect all products to the proper electrical and
pressure sources.
•To ensure proper performance, use qualified personnel to install, operate, update, program, and
maintain the product.
•Use only factory documented components for repair. Tampering and unauthorized substitution
and parts can affect product 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™ 6888C O2 Transmitter. 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.
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2 Emerson.com/Rosemount
The following definitions apply to Warnings, Cautions, and Notices found throughout this publication.
WARNING
Highlights an operation or maintenance procedure, practice, condition, statement, etc., which if not
strictly observed, could result in injury, death, or long-term health hazards of personnel.
CAUTION
Highlights an operation or maintenance procedure, practice, condition, statement, etc., which if not
strictly observed, could result in damage to or destruction of equipment or loss of effectiveness.
NOTICE
Highlights an essential operating procedure, condition, or statement.
WARNING
EXPLOSION
Do not open when an explosive atmosphere may be present.
WARNING
ELECTRIC SHOCK
Do not open while energized.
CAUTION
EQUIPMENT DAMAGE
For the standard housing probe and direct replacement probe, only use supply cables & certified cable
glands rated > 105 °C (221 °F).
CAUTION
EQUIPMENT DAMAGE
For the autocal housing, only use supply cables and certified cable glands rated > 85 °C (185 °F).
Contents
Install........................................................................................................................................... 5
Configuration, startup, and operation........................................................................................ 26
Rosemount™ 6888 product certifications................................................................................... 31
Declaration of Conformity..........................................................................................................35
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Quick Start Guide 3
1 Install
WARNING
Failure to follow safety instructions could result in serious injury or death.
Before installing this equipment, read the Essential Instructions at the front
of this document.
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.
1.1 Mechanical installation
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.
1.1.1 Probe installation
Complete the following steps to install the probe in the duct.
Prerequisites
Ensure all components are available to install the probe.
Procedure
1. If using the optional ceramic diffusion element, the vee-deflector
must be correctly oriented. Before inserting the Rosemount 6888C
probe, check the direction of gas flow in the duct. Orient the vee-
deflector so the apex points upstream towards the flow.
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Quick Start Guide 5
2. 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 2½ in. (63.5 mm).
3. Insert probe through the opening in the mounting flange and bolt
the unit to the flange.
Figure 1-1: Rosemount™ 6888C Probe with Standard
Terminations/Electronics Housing
Note
All dimensions are in inches with millimeters in parentheses.
Figure 1-2: 6888C Probe with Integral Autocal Housing
Table 1-1: Removal/Installation
Probe length DIM A insertion
depth
DIM B removal
envelope
standard
housing
DIM removal
envelope
accessory
housing
18 (457) probe 16.10 (409) 15.77 (401) 19.26 (490)
36 (910) probe 32.52 (826) 46.6 (1182) 50.1 (1271)
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Table 1-1: Removal/Installation (continued)
Probe length DIM A insertion
depth
DIM B removal
envelope
standard
housing
DIM removal
envelope
accessory
housing
6 ft (1830) probe 68.52 (1740) 82.6 (2097) 86.1 (2186)
Figure 1-3: Probe Installation
Table 1-2: Mounting Flange
ANSI DIN
Flange diameter 8.25 (210)
Hold diameter .75 (20)
(4) holes eq sp on BC 6.00 (152) 6.70 (170)
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Quick Start Guide 7
Table 1-3: Installation weld plate outline
ANSI DIN
A 7.75 (197) 8.5 (215)
B thread .625 (11) (M-16x2)
C dia 6.00 (152) 6.70 (170)
Figure 1-4: Drip Loop and Insulation Removal
A. Line voltage
B. Logic I/O, 4-20 mA signal
C. Stack or duct metal wall
D. Adapter plate
E. Insulation
F. Note
Replace insulation after installing Rosemount 6888C.
Note
Standard housing probe shown. Accessory housing is similar. Probe
may be vertical or horizontal.
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8 Emerson.com/Rosemount
1.2 Electrical installation
All wiring must conform to local and national codes. Multiple wiring
diagrams are shown in this section. Always refer to the diagrams that apply
to your transmitter configuration and disregard all other wiring diagrams.
WARNING
Electrical shock
Failure to install covers and ground leads could result in serious injury or
death.
Disconnect and lock out power before connecting the power supply.
Install all protective covers and ground leads after installation.
To meet the safety requirements of IEC 61010-1 (EC requirement) and
ensure safe operation of this equipment, connect the main electrical
power supply through a circuit breaker (min 10 A) which will disconnect
all current-carrying conductors during a fault situation.
This circuit breaker should also include a mechanically operated isolating
switch. If it does not, keep another external means of disconnecting the
power supply from the equipment located close by. Circuit breaks or
switches must complay with a recognized standard such as IEC 947.
To maintain proper earth grounding, ensure a positive connection exists
between the transmitter housing and earth. The connecting ground wire
must be 14 AWG minimum.
Line voltage, signal, and relay wiring should be rated for at least 221 °F
(105 °C).
1.2.1 Wire Rosemount™ 6888 Transmitter Probe only (no Rosemount 6888
Xi Electronics)
The Rosemount 6888 Transmitter Probe has built-in electronics that control
the heater temperature and amplify the raw O2 millivolt signal to a linear
4-20 mA.
You can run the 4-20 mA signal lines can be run directly to the control room
and also power the transmitter electronics. There is no O2 display or keypad
on the probe, so you must set up the transmitter through HART®
communications via a Field Communicator or Asset Management Solutions
(AMS).
Procedure
1. Remove the cover from the probe.
2. Connect the line (L1 wire) to the L1 terminal, the neutral (L2 wire) to
the L2/N terminal, and the ground wire to the ground lug.
October 2019 Quick Start Guide
Quick Start Guide 9
The Rosemount 6888C accepts line voltage at 120/240 Vac ±10%,
50/60 Hz. No setup is required.
3. Connect the 4-20 mA signal wires at the transmitter. Use a shielded
twisted wire pair. Do not allow bare shield wires to contact the circuit
boards. Insulate the shield wires prior to termination.
The transmitter electronics are loop-powered (i.e., the 4-20 mA
signal wires supply 24 Vdc from the DCS or an external power
supply).
Figure 1-5: Rosemount 6888C Standard Probe Housing
4. Terminate the shield only at the transmitter electronics housing
unless using a Rosemount 6888 Xi. When using the Rosemount 6888
Xi Advanced Electronics, terminate the shield at both ends.
5. Reinstall cover on transmitter.
1.2.2 Wire standard housing transmitter probe with Rosemount™ 6888 Xi
Electronics
The Rosemount 6888 Xi Electronics serves as an operater interface unit with
a back-lit display and keypad. It is capable of two channels, serving up to two
Rosemount 6888 probes.
Procedure
1. Remove cover screws from the front cover of the Rosemount 6888
Xi. Swing down the front cover of the interface box.
Quick Start Guide October 2019
10 Emerson.com/Rosemount
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