Rosemount Analytical 6888 Specifications
Product Data Sheet
December 2017
CMB-PDS-6888
Rosemount™ 6888 In-Situ Oxygen Transmitter
The new standard for combustion flue gas analysis
The RosemountTM 6888 combustion ue gas transmitter provides a continuous, accurate measurement of the oxygen remaining
in ue gases coming from any combustion process. Accurate measurements of furnace exhaust excess oxygen are critical for
combustion optimization, resulting in reduced energy costs, increased safety, and lower emissions. Reduction of overall downtime
and maintenance can be achieved with the Rosemount 6888's robust oxygen sensor and autocalibration capabilities.
Overview
Proven performance and reliability
Robust zirconia oxygen sensing cell with catalytic platinized beads increases cell
lifetime in presence of sulfur and other poisoning agents.
Outstanding accuracy: ±0.75% of reading or ±0.05% O2.
Rugged explosion-proof design for hazardous area approvals satises ATEX/IECEX Ex d
and CSA Class 1, Division 1/Zone 1.
Advanced sensor diagnostics
Calibration recommended diagnostics.
Plugged diffuser/lter diagnostics.
Low oxygen diagnostics and O2 readings during reducing conditions.
Adaptability
Completely eld repairable and adaptable to nearly any existing O2 probe installation
(Westinghouse World Class, Rosemount Oxymitter, and most competitive O2 probe
installations).
Variable probe insertion options.
Contents
RosemountTM 6888A In-Situ Oxygen Transmitter for general
purpose locations ........................................................................3
RosemountTM 6888C In-Situ Oxygen Transmitter for hazardous
locations .....................................................................................6
RosemountTM SPS 4001B and Rosemount IMPS 4000
Autocalibration Devices for general purpose locations ...............10
2 3
2
How to order: Complete Oxygen Analysis system ............... 12
Specications ..................................................................... 13
RosemountTM 6888 product certications...........................16
Dimensions ........................................................................19
Accessories......................................................................... 27
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December 2017 December 2017Rosemount 6888 Oxygen Transmitter Rosemount 6888 Oxygen Transmitter
RosemountTM 6888A In-Situ Oxygen Transmitter for
general purpose locations
The RosemountTM 6888A combustion ue gas transmitter is a
solution for optimizing any industrial or large commercial boiler,
red heater, or kiln. The Rosemount 6888A, as part of an oxygen
trim system, improves plant energy efciency and lowers energy
costs. It not only meets application requirements but also is
simple to install, commission, and operate. The sensor, diffusers,
and accessories for the Rosemount 6888A were developed to
provide the greatest performance and longevity even in the
harshest of process conditions.
World-class performance and outstanding accuracy: ±0.75% of
reading or ±0.05% O
Digital communications: HART® 5 and Foundati onTM Fieldbus
Resilient sensing cells provide protection to sulfur and other
poisoning agents present in ue gas
Specication and selection of product materials, options, or components must be made by the purchaser of the equipment. See
page 13 for more information on material selection.
2
Table 1. Rosemount 6888A In-Situ Oxygen Transmitter for General Purpose Locations
Model Sensor type
6888A In-Situ Oxygen Transmitter
Measurement
1
1OXY
2
2OXY
Probe length and type/shield
1 18 in. (457 mm) standard probe tube
3
2
3 18 in. (457 mm) abrasion-resistant probe tube
4 3 ft (0.91 m) standard probe tube
3
5
6 3 ft (0.91 m) abrasion-resistant probe tube
7 6 ft (1.83 m) standard tube
3
8
9 6 ft (1.83 m) abrasion-resistant probe tube
3
A
AA 9 ft (2.74 m) probe with abrasive shield accessory package (mounting hardware included)
3
B
BA 12 ft (3.66 m) probe with abrasive shield accessory package (mounting hardware included)
Oxygen - standard sensing cell
Oxygen - acid resistant sensing cell
18 in. (457 mm) probe with abrasive shield accessory package (mounting hardware included)
3 ft (0.91 m) probe with abrasive shield accessory package (mounting hardware included)
6 ft (1.83 m) probe with abrasive shield accessory package (mounting hardware included)
9 ft (2.74 m) probe with abrasion-resistant probe body
12 ft (3.66 m) probe with abrasion-resistant probe body
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3
Diffuser
1 Snubber diffuser for service to 400 °C (750 °F)
1A Snubber diffuser for service to 400 °C (750 °F) with dust seal for use with abrasive shield
1F Snubber diffuser for service to 400 °C (750 °F) with ashback arrestor
2 Ceramic diffuser for service to 825 °C (1517 °F)
2A Ceramic diffuser for service to 825 °C (1517 °F) with dust seal for use with absrasive shield
2F Ceramic diffuser for service to 825 °C (1517 °F) with ashback arrestor
3 Hastelloy diffuser for service to 705 °C (1300 °F)
3A Hastelloy diffuser for service to 705 °C (1300 °F) with dust seal for use with abrasive shield
Housing & electronics
1HT Standard housing, digital probe, HART protocol
2HT Integral autocalibration housing, digital probe, HART protocol
4FF Integral autocalibration housing, digital probe, Foundation Fieldbus protocol
5DR Standard housing, direct replacement probe, traditional architecture
6DRY Standard housing, direct replacement probe, with cold junction for YEW electronics
Mounting plate
00 No additional mounting hardware
04 New installation - square weld plate, ANSI: 6 x 6 in. (152.4 x 152.4 mm), 2.5 in. (63.5 mm) clearance hole, 4.75 in.
(120.65 mm) bolt circle, 5/8-11 studs
05 New installation - square weld plate, DIN 6 x 6 in. (152.4 x 152.4 mm), 2.5 in. (63.5 mm) clearance hole, 4.75 in.
(120.65 mm) bolt circle, 5/8-11 studs
06 New installation - variable insertion mount, abrasion-resistant probe only
07 New installation - variable insertion mount, mounted to existing OXT/WC abrasive shield mount; abrasion resistant probe only
08 Adapter plate for existing ANSI 3 in. (76.2 mm) 150# ange
09 Adapter plate for existing ANSI 4 in. (101.6 mm) 150# ange
10 Adapter plate for existing ANSI 6 in. (152.4 mm) 150# ange
11 Adapter plate for existing ANSI 3 in. (76.2 mm) 300# ange
12 Adapter plate for existing ANSI 4 in. (101.6 mm) 300# ange
99 Special adapter -provide existing ange dimensions, including thru-hole diameter
Manual calibration accessories
00 None
01 Calibration and reference gas owmeters and reference air lter regulator, provided loose
02 Calibration and reference gas owmeters and reference air lter regulator, mounted in a panel
Enable: Stochiometer indicator for reducing conditions
0 No
1 Yes
Enable: Programmable reference function
0 No
1 Yes
Enable: Extended temperature function
0 No
1 Yes
4
4
4
4 5
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Enable: Diffuser warning
4
0 No
1 Yes
1. Standard sensing cell includes catalytic protection beads which protect the sensor from sulfur and other poisoning agents.
2. Acid-resistant sensing cell includes additional catalytic protection beads compared to standard sensing to protect the sensor from sulfur and other poisoning
agents.
3. Abrasive shield tube ordered separately.
4. Foundation Fieldbus versions only (for HART versions, order this feature with Rosemount Xi Electronics).
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RosemountTM 6888C In-Situ Oxygen Transmitter for
hazardous locations
The RosemountTM 6888C combustion ue gas
transmitter is a solution for optimizing boilers or red
heaters located in areas with hazardous requirements.
The Rosemount 6888C's calibration equipment is
simplied in hazardous areas with the approved
integrated automatic calibration housing option.
Maintenance costs are reduced with the redesigned
modular diffuser and process ame arrestor assembly.
Rugged explosion-proof design satises ATEX/
IECEx Ex d and CSA Class 1, Division/Zone 1 approval
requirements.
Digital communications: HART® 5 standard,
FoundationTM Fieldbus, and AMS/PlantWeb
Resilient sensing cells provide protection to sulfur and
other poisoning agents present in ue gas.
Additional information
Specications can be found on page 13. Drawings are
provided on page 19.
®
Specication and selection of product materials, options, or components must be made by the purchaser of the equipment. See
page 13 for more information on material selection.
Table 2. Rosemount 6888C In-Situ Oxygen Transmitter for Hazardous Locations
Model Product description
6888C In-Situ Oxygen Transmitter for hazardous locations
Measurement
1OXY Oxygen - standard sensing cell
2OXY Oxygen - acid resistant sensing cell
Probe length and mounting flange
1A 18 in. (457 mm) probe with ANSI ange: 7.5 in (190.5 mm). O.D., 6.00 in. (152.4 mm) bolt hole pattern diameter, 0.75 in.
1D 18 in. (457 mm) probe with DIN ange: 8.25 in. (209.55 mm) O.D., 6.69 in. (170 mm) bolt hole pattern diameter, .71 in. (18 mm)
2A 3 ft (0.91 m) probe with ANSI ange: 7.5 in (190.5 mm). O.D., 6.00 in. (152.4 mm) bolt hole pattern diameter, 0.75 in.
2D 3 ft (0.91 m) probe with DIN ange: 8.25 in. (209.55 mm) O.D., 6.69 in. (170 mm) bolt hole pattern diameter, .71 in. (18 mm) bolt
3A 6 ft (1.83 m) probe with ANSI ange: 7.5 in (190.5 mm). O.D., 6.00 in. (152.4 mm) bolt hole pattern diameter, 0.75 in.
3D 6 ft (1.83 m) probe with DIN ange: 8.25 in. (209.55 mm) O.D., 6.69 in. (170 mm) bolt hole pattern diameter, .71 in. (18 mm) bolt
1
(19.05 mm) bolt hole diameter
bolt hole diameter
(19.05 mm) bolt hole diameter
hole diameter
(19.05 mm) bolt hole diameter
hole diameter
6 7
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Diffuser
1 Snubber diffuser for service to 400 °C (750 °F)
2 Ceramic diffuser for service to 825 °C (1517 °F)
3 Hastelloy diffuser for service to 705 °C (1300 °F)
Housing and electronics
1HT Standard housing, digital probe, HART protocol
2HT Integral autocalibration housing, digital probe, HART protocol
4FF Integral autocalibration housing, digital probe, Foundation Fieldbus protocol
5DR Standard housing, direct replacement probe, traditional architecture
6DRY Standard housing, direct replacement probe, with cold junction for YEW electronics
Certifications
A ATEX/IECEx
C CSA
Mounting plate
00 No additional mounting hardware
04 New installation plate - 7.75 in. (196.85 mm) square diameter, 3.25 in. (82.55 mm) clearance hole, 6.00 in. (152.4 mm) bolt circle,
5/8-11 UNC studs
05 New installation plate - 8.46 in. (215 mm) square diameter, 3.25 in. (82.5) mm clearance hole, 6.7 in. (170 mm) bolt circle, M16 x
2 studs
09 Adapter plate for existing ANSI 4 in. (101.6 mm),150# ange
10 Adapter plate for existing ANSI 6 in. (152.4 mm), 150# ange
11 Adapter plate for exisiting ANSI 3 in. (76.2 mm), 300# ange
12 Adapter plate for existing ANSI 4 in. (101.6 mm), 300# ange
99 Special adapter - provide existing ange dimensions, including thru-hole diameters
Manual calibration accessories
00 None
01 Calibration and reference gas owmeters and reference air lter regulator, provided loose
02 Calibration and reference gas owmeters and reference air lter regulator, mounted in a panel
Enable: Stoichiometer indicator for reducing conditions
0 No
1 Yes
Enable: Programmable reference function
0 No
1 Yes
Enable: Extended temperature function
0 No
1 Yes
Enable: Diffuser warning
0 No
1 Yes
1. Foundation Fieldbus versions only (for HART versions, order this feature with Rosemount Xi Electronics).
1
1
1
1
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RosemountTM 6888 Xi Digital Transmitter for general purpose
locations
The Rosemount 6888 Xi brings an at a glance view of pertinent
information provided by an easy to use display and interface
which effortlessly connects with a PLC or DCS via HART®/4-20 mA.
It creates a centralized infrastructure for remote autocalibration
devices, diagnostic tools, alarm relay(s), and advanced application
features. The Roesmount 6888Xi is congurable to have up to
two channels for digital inputs or one channel for supporting
traditional architectures.
Easy to use operator interface and design
Plugged diffuser diagnostic measures response time and
detects a plugged diffuser or empty gas bottle
Stochiometer provides an oxygen reading during reducing
conditions, indicating extent of O2 deciency
Additional information
Specications can be found on page 13. Drawings are provided
on page 19.
Specication and selection of product materials, options, or components must be made by the purchaser or the equipment. See
page 13 for more information on material selection.
Table 3. Rosemount 6888 Xi Digital Transmitter for General Purpose Locations
Model Product description
6888Xi Digital Transmitter
Measurement
1OXY Single digital input (HART)
2OXY Single digital input (HART) and ame safety interlock for heater
3OXY Two digital inputs (HART)
1
4OXY
Mounting
00 No hardware
01 Panel mount kit with gasket
02 2 in. pipe/wall mount kit
2
Cable
00 No cable
10 20 ft (6 m) cable, use with traditional architecture probe only
11 40 ft (12 m) cable, use with traditional architecture probe only
12 60 ft (18 m) cable, use with traditional architecture probe only
13 80 ft (24 m ) cable, use with traditional architecture probe only
14 100 ft (30 m) cable, use with traditional architecture probe only
15 150 ft (45 m) cable, use with traditional architecture probe only
1
Single traditional architecture input
8 9
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Enable: Stochiometer indicator for reducing conditions
00 No
01 Single channel
02 Dual channel
Enable: Programmable reference function
00 No
01 Single channel
02 Dual channel
Enable: Extended temperature function
00 No
01 Single channel
02 Dual channel
Enable: Plugged diffuser diagnostics
00 No
01 Single channel
02 Dual channel
1. Compatible with oxygen probes utilizing a 120 V heater only.
2. Cables are not rated for use in hazardous locations and must be installed in accordance with local and national codes.
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RosemountTM SPS 4001B and Rosemount IMPS 4000
Autocalibration Devices for general purpose locations
The Rosemount SPS 4001B and Rosemount IMPS 4000
are cost-effective calibration systems which conveniently
sequence calibration gases without any labor from an operator
or maintenance technician. Calibration owmeter(s) and
reference air owmeter(s)/regulator(s) are included with the
autocalibration manifold. The calibration can be initiated
by a contact relay or timer or automatically via calibration
recommended diagnostic. The Rosemount SPS 4001B is
designed to automatically calibrate one oxygen analysis system.
The Rosemount IMPS 4000 is congurable to automatically
calibrate one to four oxygen analysis systems. Both the
Rosemount SPS 4001B and Rosemount IMPS 4000 require a
Rosemount 6888 Xi Transmitter or Oxymitter electronics.
Complete autocalibration assembly: includes calibration
owmeter and reference air owmeter/regulator and
solenoids mounted on a single manifold
Automatic calibrations reduce operator time to ensure
continuously accurate readings
Rosemount IMPS 4000 enclosure designed to accept
a customer's z-purge system to meet hazardous area
requirements
Additional information
Specications can be found on page 13. Drawings can be
found on page 19.
Specication and selection of product materials, options, or components must be made by the purchaser of the equipment. See
page 13 for more information on material selection.
10 11
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