Emerson Rosemount 6888A User manual

Quick Start Guide
00825-0100-4890, Rev AA
July 2018
Rosemount™ 6888A
O2 Combustion Flue Gas Transmitter

Essential instructions
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 6888A manual for more
information.
Read this page before proceeding!
EmersonTM 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 RosemountTM 6888A
O2 Transmitter. The AMS software must be upgraded to AMS 8.0 or above. Contact Emerson's Global Service Center (GSC) at
[phone] 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.
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.

Contents
Chapter 1 Install .............................................................................................................................1
1.1 Mechanical installation ................................................................................................................ 1
1.1.1 Install probe .................................................................................................................. 2
1.2 Electrical installation ....................................................................................................................6
1.2.1 Wiring for Rosemount 6888 Transmitter probe only (no Rosemount 6888Xi
Electronics) ................................................................................................................... 7
1.2.2 Standard housing transmitter probe plus Rosemount 6888Xi Electronics ......................9
1.2.3 Transmitter probe with integral autocal and HART communications ...........................12
1.2.4 Wire the Rosemount 6888A Transmitter probe with integral autocal and FOUNDATION™
Fieldbus communications ........................................................................................... 15
1.2.5 Connecting the traditional architecture system to the direct replacement probe ........16
1.3 Pneumatic installation ............................................................................................................... 17
1.3.1 Reference air package ................................................................................................. 17
1.3.2 Calibration gas ............................................................................................................ 18
Chapter 2 Configuration, startup, and operation .......................................................................... 20
2.1 Power up Rosemount 6888 Transmitter without Rosemount 6888Xi .........................................20
2.2 Power up the Rosemount 6888 direct replacement probe (no electronics inside) with traditional
architecture Rosemount 6888Xi ................................................................................................ 20
2.3 Rosemount 6888Xi Quick Start Wizard ...................................................................................... 21
2.4 Calibration .................................................................................................................................22
2.4.1 Manual/semi-automatic calibration ............................................................................ 22
2.4.2 Fully automatic calibration .......................................................................................... 22
2.4.2.1 Rosemount 6888 probes with standard electronics housing ............................22
2.4.2.2 Rosemount 6888 probe with integral autocal housing .....................................23
2.4.3 Calibration procedure ................................................................................................. 23
Chapter 3 Rosemount™ 6888 product certifications ......................................................................25
3.1 European Directive information ................................................................................................. 25
3.2 Ordinary location certification ................................................................................................... 25
3.3 Installing equipment in North America ...................................................................................... 25
3.4 Rosemount™ 6888A In-Situ Oxygen Transmitter for General Purpose Locations .........................25
3.4.1 USA .............................................................................................................................25
3.4.2 Canada ........................................................................................................................26
3.4.3 Europe ........................................................................................................................ 26
3.5 Rosemount™ 6888Xi Digital Transmitter for General Purpose Locations .....................................26
3.5.1 USA .............................................................................................................................26
3.5.2 Canada ........................................................................................................................26
3.6 Rosemount™ SPS4001B and IMPS4000 Autocalibration Devices for General Purpose
Locations ................................................................................................................................... 27
3.6.1 USA/Canada ................................................................................................................27
Appendices and reference
Appendix A ..................................................................................................................................... 28
Contents
Quick Start Guide i

Contents
ii Rosemount 6888A

1 Install
WARNING!
Before installing this equipment, read the Essential Instructions at the front of this Quick Start
Guide. Failure to follow safety instructions could result in serious injury or death.
WARNING!
ELECTRIC SHOCK
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.
WARNING!
HAZARDOUS AREAS
The Rosemount™ 6888A O2 Transmitter can be installed in general purpose areas only. Do not
install the transmitter in hazardous areas or in the vicinity of flammable liquids.
CAUTION!
EQUIPMENT DAMAGE
If external loop power is used, the power supply must be a safety extra low voltage (SELV)
type.
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!
ELECTRIC SHOCK
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. The Rosemount 6888A
O2 transmitter can be installed in general purpose areas only. Do not install the transmitter or
the Rosemount 6888Xi in hazardous areas or in the vicinity of flammable liquids.
Install
Quick Start Guide 1

1.1.1 Install probe
Complete the following steps to install the Rosemount 6888A O2 probe.
1. Ensure all components are available to install the Rosemount 6888A O2 probe.
If using the optional ceramic or Hastelloy diffusion element, the vee deflector must
be correctly oriented.
2. Before inserting the Rosemount 6888A 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.
Orienting the Optional Vee DeflectorFigure 1-1:
A. Gas flow direction
B. Vee deflector
C. Diffusion element
D. Setscrew
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 2-1/2 in. (63.5 mm).
Install
2Rosemount 6888A

Rosemount 6888A Probe with Standard Terminations/Electronic
Housing
Figure 1-2:
Note
All dimensions are in inches with millimeters in parentheses.
Rosemount 6888A Integral Autocal HousingFigure 1-3:
A. Dimension
B. Dimension
C. Hastelloy diffuser
D. Ceramic diffuser
Note
All dimensions are in inches with millimeters in parentheses.
Install
Quick Start Guide 3

Rosemount 6888A Integral Autocal Housing Close-upFigure 1-4:
A. Dimension
B. Dimension
C. Calibration gas 1/4 tube fittings 5.0 SCFH (2.4 L/min) 20 PSI (138 kPa)
D. #10 socket head cap screw (external ground)
E. 1/2 NPT conduit connection (power, signal)
F. Reference gas 1/4 tube fitting 2.0 SCFH (1.0 L/min) 20 PSI (138 kPa)
G. Reference air vents
Note
All dimensions are in inches with millimeters in parentheses.
Removal/InstallationTable 1-1:
Probe length(1) Dim A insertion depth
Dim B removal envelope
standard housing
Dim B removal envelope
accessory housing
457 mm (18 in.) probe 409 mm (16.1in.) 401 mm (15.77 in.) 490 mm (19.26 in.)
0.91 m (3 ft) probe 826 mm (33.52 in.) 1182 mm (46.6 in.) 1271 mm (50.1 in.)
1.83 m (6 ft) probe 1740 mm (68.52 in.) 2097 mm (82.6 in.) 2186 mm (86.1 in.)
2.74 m (9 ft) probe 2655 mm (104.52 in.) 3011 mm (118.6 in.) 3100 mm (122.1 in.)
3.66 m (12 ft) probe 3569 mm (140.52 in.) 3926 mm (154.6 in.) 4015 mm (158.1 in.)
(1) Add 96 mm (3.8 in.) to Dim A and Dim B for probe with ceramic or Hastelloy diffuser.
The through hole diameter in the stack or duct wall and refractory material must be
at least 63.5 mm (2-1/2 in.)
4. Insert probe through the opening in the mounting flange and bolt the unit to the
flange.
Install
4Rosemount 6888A

Probe InstallationFigure 1-5:
A. Dimension
B. Dimension
C. Dimension
D. Four studs, lockwashers, and nuts equally spaced on C dia. B C
Mounting flangeTable 1-2:
ANSI DIN
Flange diameter 7.28 (185)
Hole diameter .75 (20)
(4) holes eq sp on BC 4.75 (121) 5.71 (145)
Installation Weld Plate OutlineTable 1-3:
Dimension ANSI DIN
A6.0 m (152 in.) 7.5 m (191 in.)
B thread .625 m (11 in.) M16x2
C diameter 4.75 m (121 in.) 5.708 m (145 in.)
Install
Quick Start Guide 5

Drip Loop and Insulation RemovalFigure 1-6:
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 6888A
Note
Standard housing probe shown. Accessory housing is similar. Probe installation may be vertical or
horizontal.
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.
Install
6Rosemount 6888A

WARNING!
ELECTRIC SHOCK
Disconnect and lock out power before connecting the power supply.
Install all protective covers and safety ground leads after installation. Failure to install covers
and ground leads could result in serious injury or death.
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 not, keep another
external means of disconnecting the supply from the equipment located close by. Circuit
breakers or switches must comply with a recognized standard such as IEC 947.
NOTICE
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.
NOTICE
Line voltage, signal, and relay wiring should be rated for at least 105 °C (221 °F).
1.2.1 Wiring for Rosemount 6888 Transmitter probe only (no
Rosemount 6888Xi Electronics)
The Rosemount 6888 transmitter probe has electronics in the blue housing that controls
the heater temperature and also amplifies the raw O2 millivolt signal to a linear 4-20 mA.
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
through HART® communications via a 475 handheld communicator or via Asset
Management Solutions (AMS).
1. Remove the cover from the probe.
2. Connect the line (L1 wire) to the L1 terminal, the netural (L2 wire) to the L2/N
terminal, and the ground wire to the ground lug.
The transmitter accepts 120/240 Vac ±10% line voltage and 50/60 Hz. No setup is
required.
Install
Quick Start Guide 7

Rosemount 6888A Standard Probe HousingFigure 1-7:
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.
4. Terminate the shield only at the transmitter electronics housing unless using a
Rosemount 6888Xi. When using the Rosemount 6888Xi Advanced Electronics,
terminate the shield at both ends.
NOTICE
The 4-20 mA signal represents the O2 value and also powers the probe-mounted
electronics. Superimposed on the 4-20 mA signal is HART information accessible
through a Field Communicator or AMS software.
5. Reinstall cover on transmitter.
6. Follow the remaining electrical instructions only if the Rosemount 6888Xi is
included with your system configuration.
Install
8Rosemount 6888A

1.2.2 Standard housing transmitter probe plus Rosemount
6888Xi Electronics
The Rosemount 6888Xi Electronics serve as an operator interface unit with a back-lit
display and keypad. It is capable of two channels, serving two Rosemount 6888 probes.
1. Remove cover screws from the front cover of the Rosemount 6888Xi. Swing down
the front cover of the interface box.
2. Pull out the I/O board on the right side of the card rack inside the Rosemount
6888Xi.
If your system is configured to operate two transmitter probes, there are two I/O
interface boards. See Figure 1-8.
Install
Quick Start Guide 9

Wiring Diagrams - Single/Dual Channel Wiring DiagramFigure 1-8:
Note
A. Except for JP5, JP2, and JP8 on IO board, jumper and switch settings are factory set and are
shown for reference only.
B. IO board 4-20 mA/HART loop power settings:
JP5: Pins 1-2 internal power Rosemount 6888Xi to Rosemount 6888 transmitter, pins 2-3
external power Rosemount 6888Xi to Rosemount 6888 transmitter (requires 2500 resistor
across J4, PR+ to PR-)
JP7/JP8: Pins 1-2 internal power Rosemount 6888Xi to DCS, pins 2-3 external power Rosemount
6888Xi to DCS.
Install
10 Rosemount 6888A

Rosemount 6888Xi Front and Bottom ViewFigure 1-9:
A. Power supply board
B. Channel #2 IO board
C. Shield ground
D. Channel #1 IO board
E. AC input to P/S
F. Plug
G. Channel #2 alarm relay, SPS/IMPS
H. Channel #2 4-20 mA/HART output
I. Channel #1 alarm relay SPS/IMPS
J. Channel #1 4-20 mA/HART output
Install
Quick Start Guide 11

3. Connect the 4-20 mA signal wires at J4 of the I/O board. Attach the supplied ferrite
clamp over the 4-20 mA out wires that extend past the shield.
NOTICE
Installation of the ferrite clamp over the 4-20 mA out wires is required for the
compliance with the European EMC directive.
4. Terminate the shield of the 4-20 mA signal wires at the designated ground terminal
of the Rosemount 6888Xi. Do not allow bare shield wires to contact the circuit
boards. Insulate the shield wires prior to termination.
5. Connect the signal wires from the Rosemount SPS or Rosemount IMPS (if used) to
the applicable terminals of J3. Refer to the Rosemount SPS 4001B or
Rosemount IMPS 4000 instruction manual for wiring details.
6. Reinstall the I/O board in the card rack of the Rosemount 6888Xi.
7. If your system is configured or two channel operation, repeat steps 2 through 7 to
connect the other probe's signal wires.
8. Remove the probe's connector from the power supply board located on the left side
of the card rack inside the Rosemount 6888Xi.
9. Connect the line, or L1, wire to the L1 terminal and the neutral, or L2, wire to the N
terminal.
10. Reinstall the power supply connector in the power supply board.
1.2.3 Transmitter probe with integral autocal and HART
communications
Calibrations can be initiated via a calibration recommended diagnostic, time since last
calibration, manually via external dry contact, HART communications, or from the
Rosemount 6888Xi local operator interface keypad. The integral autocal feature can only
be implemented when the probe is used with a Rosemount 6888Xi.
1. Remove the two covers from the transmitter.
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.
No setup is required.
3. Connect the 4-20 mA signal wires form the Rosemount 6888Xi to the connections in
the side chamber of the transmitter.
Do not connect the signal wires to the terminals in the main chamber where the AC
input wires are connected. 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
24 Vdc loop power is sourced from the Rosemount 6888Xi.
4. Terminate the shield at both the probe and the Rosemount 6888Xi Advanced
Electronics.
Install
12 Rosemount 6888A

NOTICE
The 4-20 mA signal represents the O2 value and also powers the probe-mounted
electronics. Superimposed on the 4-20 mA signal is HART information accessible
through a field communicator or AMS software.
5. Reinstall both covers on transmitter.
6. Follow the remaining electrical installation instructions for the Rosemount 6888Xi
included with your system configuration.
Install
Quick Start Guide 13

Integral Autocal and HART CommunicationsFigure 1-10:
A. Ferrite clamp
B. Signal
C. Test points
D. #8 pan htd scr (internal ground)
E. Power
F. Test point group
NOTICE
A. Except for JP5, JP7, and JP8 on IO board, jumper and switch settings are factory set and are shown for reference
only.
Install
14 Rosemount 6888A