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 satises 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

Specications ..................................................................... 13

RosemountTM 6888 product certications...........................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 efciency 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

Specication 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
simplied 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 satises 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

Specications can be found on page 13. Drawings are
provided on page 19.

®

Specication 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 congurable 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 deciency

Additional information

Specications can be found on page 13. Drawings are provided
on page 19.

Specication 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 congurable 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

Specications can be found on page 13. Drawings can be
found on page 19.

Specication 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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Table 4. Rosemount SPS 4001B and Rosemount IMPS 4000 Autocalibration Devices for General Purpose
Locations

Model Product description

XSO2CAL Autocalibration accessories

Single probe autocalibration options

00 None

01 SPS 4001B single probe sequencer

Multiprobe autocalibration options

00 None

01 Intelligent multiprobe sequencer (IMPS) - 1 probe

02 Intelligent multiprobe sequencer (IMPS) - 2 probes

03 Intelligent multiprobe sequencer (IMPS) - 3 probes

04 Intelligent multiprobe sequencer (IMPS) - 4 probes

05 Intelligent multiprobe sequencer (IMPS) with 115 V heater - 1 probe

06 Intelligent multiprobe sequencer (IMPS) with 115 V heater - 2 probes

07 Intelligent multiprobe sequencer (IMPS) with 115 V heater - 3 probes

08 Intelligent multiprobe sequencer (IMPS) with 115 V heater- 4 probes

09 Intelligent multiprobe sequencer (IMPS) with 220 V heater - 1 probe

10 Intelligent multiprobe sequencer (IMPS) with 220 V heater - 2 probes

11 Intelligent multiprobe sequencer (IMPS) with 220 V heater - 3 probes

12 Intelligent multiprobe sequencer (IMPS) with 220 V heater - 4 probes

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How to order: Complete Oxygen Analysis system

The RosemountTM In-Situ Oxygen Analysis system can be congured as two types of

architectures.

Digital: A digital output of either 4-20 mA with digital signal based on HART® or
FoundationTM Fieldbus is transmitted directly from the probe.

Traditional: Raw sensor and thermocouple voltages are output from the probe to a
remote transmitter. The remote transmitter outputs the 4-20 mA with digital signal
based on HART.

How to order:

1. Choose a Rosemount 6888A or Rosemount 6888C model and decide which type
of architecture is desired. The architecture type is specied in the Housing and
electronics code in the model number.

2. Choose a corresponding Rosemount 6888Xi model1 to match the architecture type
of the Rosemount 6888A or Rosemount 6888C. The architecture type is specied by
the Remote Type code in the model number.

3. Based on the architecture type, choose the appropriate interconnect cable.

4. Rosemount SPS 4001B and Rosemount IMPS 4000 autocalibration devices are
optional to include with an oxygen analysis system.

Architecture Rosemount

6888A/
Rosemount
6888C Housing
and electronics
code

Digital 1HT, 2HT, 4FF 1OXY, 2OXY, 3OXY 18 AWG two wire

Traditional 5DR 4OXY 7 conductor cable,

Rosemount 6888
Xi Remote type
code

Interconnect
cable

shielded cable,

customer supplied

available through

Rosemount

2

1

2

3

4

1. For digital architecture, Rosemount 6888 Xi, Rosemount Field Communicator, or PLC/DCS required to interface

with Rosemount 6888A or 6888C models.

2. 7 conductor cable orderable through Rosemount 6888Xi model matrix or by part number.

12 13

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Specifications

Table 5. Performance Specifications

Specification Rosemount

Factory calibrated O2 range 0-10%

User congurable O2 range Lower (LRL) O2: 0 - 10%

Upper (URL) O2: 0 - 50%

Repeatability ±0.75% of reading or 0.05% of O2, whichever is greater

Process temperature effect on repeatability 0.05% O2 for 100 to 700 °C (212 to 1292 °F) temperature range N/A

Lowest detection limit 0.02% O

Calibration gas repeatability ±0.02% O

System speed of response to calibration

1

gas

Accuracy of stochiometer reducing

condition indicator

Reducing conditions: system response From oxidizing to reducing - T90 in 120 sec

Calibration gases Low: 0.4 to 2% O2, balance nitrogen

Reference air (recommended) Instrument air (clean, dry)

T

< 3 seconds

initial

T90 < 8 seconds

±0.1% of reading or 0.1% O2, whichever is greater

From reducing to oxidizing - T90 in 30 sec

High: 8 to 21% O2, balance nitrogen

Regulate to 20 psi (137.9 kPa), 5 schf (2.36 L/min)

Regulate to 5 psi (34 kPa), 2 scfh (0.94 L/min)

TM

6888A, Rosemount 6888C Rosemount 6888 Xi

2

2

N/A

N/A

N/A

N/A

1. Response to process gas changes may vary depending on process conditions and product lifetime.

Table 6. Calibration Modes

Standard housing: Rosemount 6888A, Rosemount 6888C

Additional devices Initiation Gas sequencing

None DCS or eld communicator Manually

Rosemount 6888Xi Manually Manually

Rosemount 6888Xi, Rosemount SP4001B Manually, timer, or contact relay Automated

Rosemount 6888Xi, Rosemount IMPS4000 Manually, timer, or contact relay Automated

Integral autocalibration housing: Rosemount 6888A, Rosemount 6888C

Additional devices Initiation Gas sequencing

None Manually or timer Automated

Rosemount 6888Xi Manually, timer, or contact relay Automated

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Functional specifications

Temperature limits

Table 7. Process Temperature Limits

Process Process mounting

With snubber diffuser 0 to 400 °C (32 to 750 °F) 200 °C (392 °F) maximum

With ceramic diffuser 0 to 705 °C (32 to 1301 °F) 200 °C (392 °F) maximum

With Hastelloy diffuser 0 to 705 °C (32 to 1301 °F) 200 °C (392 °F)maximum

Bypass accessory 0 to 1050 °C (32 to 1922 °F) 200 °C (392 °F) maximum

Abrasive shield accessory 0 to 705 °C (32 to 1301 °F) 200 °C (392 °F) maximum

1. 190 °C (374 °F) for hazardous locations (only applies to the Rosemount 6888C)

Table 8. Ambient Temperature Limits

Rosemount 6888A Rosemount 6888C Rosemount

6888 Xi

-40 to 70 °C

(-40 to 158 °F)

-40 to 70 °C

(-40 to 158 °F)

-20 to 50 °C

(4 to 122 °F)

Storage temperature limits

-40 to 70 °C (-40 to 158 °F )

Electrical

Rosemount
SPS 4001B

-40 to 65 °C

(-40 to 149 °F)

Rosemount
IMPS 4000

0 to 55 °C

(32 to 131 °F)

1

1

1

Rosemount IMPS
4000 with heater

-35 to 55 °C

(-31 to 131 °F )

Rosemount 6888A/Rosemount 6888C power requirements and consumption

Digital: 120/240 Vac, 50/60 Hz, 260/1020 VA max
Traditional: 120/240 Vac, 50/60 Hz, 260/1020 VA max

Rosemount 6888Xi power requirements

Digital, single/dual inputs: 120/240 Vac, 50/60 Hz, 12 VA max
Digital, single input with ame safety interlock: 120/240 Vac, 50/60 Hz, 260/1020 VA max

1

Figure 1. Rosemount 6888A/Rosemount 6888C Transmitter Electronics and Rosemount 6888 Xi Maximum Loop
Resistance is Determined by the Voltage Level of the External Power Supply, as Described by:

1. Power consumption is primarily driven by the oxygen probe.

14 15

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Load limitations

The Field Communicator requires a minimum loop resistance of 250 Ω for communication.

Rosemount SPS 4001B

100 to 240 Vac, 50/60 Hz, 15 VA

Rosemount IMPS 4000

85 to 264 Vac, 50/60 Hz, 50 VA

Physical specifications

Process wetted parts: 316L or 304 stainless steel
Process connections: 2 in. 150# (4.75 in. (121 mm) bolt circle) DIN (5.71 in. (145 mm) bolt circle)
Orientation: Vertical or horizontal mount

Table 9. Mounting Hardware and Adapter Plates

O.D. Bolt circle Studs

Square weld plate, ANSI studs 7.75 x 7.75 in. (196.85 x 196.85 mm) 6.00 in. (152.4 mm) 5/8-11 UNC

Square weld plate, DIN studs 8.46 x 8.46 in. (215 x 215 mm) 6.69 in. (170 mm) M16 x 2

Adapter to existing ANSI 4 in., 150# ange 9.00 in. (228.6 mm) 7.50 in. (190.5 mm) 5/8-11 UNC

Adapter to existing ANSI 6 in., 150# ange 11.00 in. (297.4 mm) 8.50 in. (215.9 mm) 3/4 - 10 UNC

Adapter to existing ANSI 3 in., 300# ange 8.25 in. (209.55 mm) 6.62 in. (166.15 mm) 3/4 - 10 UNC

Adapter to existing ANSI 4 in., 300# ange 10.00 in. (254 mm) 7.88 in. (200.15 mm) 3/4 - 10 UNC

Spool piece P/N is available to offset probe electronics housing from hot duct work.

ANSI DIN

A 6.00 (153) 7.50 (1.91)

B thread 0.625 (11) M-16 x 2

C diameter 4.75 (121) 5.71 (145)

Table 10. Electrical Conduit Size

Rosemount 6888A Rosemount 6888C Rosemount

6888 Xi

Conduit tting 1/2 - 14 NPT 1/2 - 14 NPT 1/2 - 14 NPT 1/2 - 14 NPT 1/2 - 14 NPT

Number of ttings 2 2 6 2 2

Rosemount
SPS 4001B

Rosemount
IMPS 4000

Table 11. Shipping Weights

6888A 6888C

18 in. (457 mm) standard probe tube 16 lb (7.3 kg) 21 lb (9.5 kg)

3 ft (0.91 m) standard probe tube 21 lb (9.5 kg) 26 lb (11.8 kg)

6 ft (1.83 m) standard probe tube 27 lb (12.2 kg) 32 lb (14.5 kg)

9 ft (2.74 m) standard probe tube 33 lb (15.0 kg) N/A

12 ft (3.66 m) standard probe tube 39 lb (17.7 kg) N/A

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RosemountTM 6888 product certifications

European Directive information

A copy of the EC Declaration of Conformity can be found at the end of the Rosemount 6888C Quick Start Guide. The most recent
version of the EC Declaration of Conformity can be found at Emerson.com/Rosemount.

Ordinary location certification

As standard, the transmitter has been examined and tested to determine that the design meets the basic electrical, mechanical, and
re protection requirements by a nationally recognized test laboratory (NRTL) as accredited by the Federal Occupational Safety and
Health Administration (OSHA).

Installing equipment in North America

The US National Electrical Code (NEC) and the Canadian Electrical Code (CEC) permit the use of Division marked equipment in Zones
and Zone marked equipment in Divisions. The markings must be suitable for the area classication, gas, and temperature class.
This information is clearly dened in the respective codes.

Rosemount 6888A In-Situ Oxygen Transmitter for general purpose locations

USA

FM Certificate: 3042889

Standards: FM 3810: 2005, ANSI/IEC 250: 2003, ANSI/IEC

60529: 2004

Markings: Type 4X, IP66

Special conditions for use

1. Type 4X and IP66 applies to the transmitter portion that is
mounted externally to the ue duct.

Canada

CSA Certificate: 1913435
Standards: CAN/CSA C22.2 No. 61010-1-04, UL 61010-1:2004

(2nd Edition), UL 50 (11th Ed.), IEC 60529 (Edition

2.1-2001-02), NEMA 250-2003

Markings: Type 4X, IP66

Europe

TUVRheinland
QAL1 Certificate: 0000038506
Standards: EN15267-1:2009, EN15627-2:2009, EN15627-

3:2007, EN14181:2004

MCERTS
Certificates: Sira MC140270/00
Standards: EN15267-1:2009, EN15627-2:2009, EN15627-

3:2007, EN14181:2004

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Rosemount 6888C In-Situ Oxygen Transmitter for hazardous locations

USA/Canada

Model String Option Code: C
CSA Certificate: 70100758
Standards: CAN/CSA Standard C22.2 No.0-10:2015, CAN/

CSA C22.2 No.61010-1-12 Harmonized UL 61010­1:2012 (3rd Edition), CAN/CSA Standard C22.2 No.

94.1-15 Harmonized ANSI/UL Standard 50 (2nd
Edition), CAN/CSA Standard C22.2 No. 94.2-15
Harmonized ANSI/UL Standard 50 (2nd Edition),
CAN/CSA C22.2 No. 60529:16 and ANSI/ISA
60529:04, CAN/CSA Standard C22.2 No. 30-M1986:
2016, CAN/CSA-C22.2 No. 60079-0: 2015, CAN/
CSA-C22.2 No. 60079-1:2016, FM 3600:2011, FM
3615:2006, ANSI/UL-60079-0:2013 (6th Edition),
ANSI/UL-60079-1:2015 (7th Edition))

Markings: Type 4X, IP66, Class 1, Division 1, Groups B, C

and D; T3, Class 1, Zone 1, AEx db IIB+H2 T3 Gb, Ex
db IIB+H2 T3 Gb: -40°C ≤ Ta ≤ +70°C (Autocal Housing
and Probe assembly); -40°C ≤ Ta ≤ +90°C (Standard
Housing and Probe assembly eq. “DR Probe”)

Conditions of acceptability

1. The unit is to be connected to supply mains by qualied
personnel in accordance with national (e.g., CEC, NEC, etc.)
and local codes.

2. Suitable APPROVED switch and fuse or a circuit breaker
shall be provided to facilitate the disconnection of mains
power..

3. The maximum operating ambient is considered as follows:
90 °C for 6888C DR Probe, 70 °C for 6888C Transmitter.

4. Mounting Flange temperature shall not exceed 190 °C
during combustion process.

5. Calibration air lines and reference air lines shall not contain
pure oxygen or combustible gas other than inert/oxygen
gas mixture of which oxygen represents no more than that
normally present in air.

6. The pressure within the enclosure and gas lines shall not be
higher than 1.1 times the atmospheric pressure during the
normal operations of the equipment

7. The 6888C O2 Analyzers are used with the 6888 Xi
Advanced Electronics, which must be installed in a Non­Hazardous Location, per wiring diagram 6R00131.

8. Meets Enclosure Type 4X & IP66 ratings when the reference
air vent is routed to a dry area.

9. Units installed with conduit runs must have suitably
certied conduit seals installed at the enclosure

10. Units installed with other than conduit runs and conduit
seals, must be tted with certied or listed cable glands
for use in “Class I, Zone 1, Ex/AEx d IIB+H2” and “Class I,
Division 1, Group B, C and D” or better, suitable for the
ambient temperature range.

11. Flameproof joints are not intended to be repaired.

Europe

Model String Option Code: A
ATEX Certificate: Sira 14ATEX1031X
Standards: EN 60079-0:2012/A11:2013, EN 60079-1:2014
Markings: II 2 G Ex db IIB+H2 T3 Gb; IP66;

-40 °C ≤ Ta ≤ +70 °C (Autocal Housing and Probe assembly);

-40 °C ≤ Ta ≤ +90 °C (Standard Housing and Probe assembly eq.

“DR Probe”)

Special conditions for safe use (X):

1. Mounting Flange temperature shall not exceed 190 °C
during combustion process.

2. The 6888C O2 Analyzers are used with the 6888 Xi
Advanced Electronics (associated equipment not part of
this certication) which must be installed in a Safe Area.

3. Calibration air lines and reference air lines shall not contain
pure oxygen or combustible gas other than inert/oxygen
gas mixture of which oxygen represents no more than that
normally present in air.

4. The pressure within the enclosure and gas lines shall not be
higher than 1.1 times the atmospheric pressure during the
normal operations of the equipment.

5. Fasteners property class must be A2-70 Stainless Steel.

6. Flameproof joints are not intended to be repaired.

Model String Option Code: A
IECEx Certificate: IECEx CSA 14.0044X
Standards: IEC 60079-0:2012/A11:2013, IEC 60079-1:2014
Markings: Ex db IIB+H2 T3 Gb; IP66; -40° C ≤ Ta ≤ +70 °C

(Autocal Housing and Probe assembly); -40 °C ≤ Ta ≤ +90 °C
(Standard Housing and Probe assembly eq. “DR Probe”))

Special conditions for safe use (X):

1. Mounting Flange temperature shall not exceed 190 °C
during combustion process.

2. The 6888C O2 Analyzers are used with the 6888 Xi
Advanced Electronics (associated equipment not part of
this certication) which must be installed in a Safe Area.

3. Calibration air lines and reference air lines shall not contain
pure oxygen or combustible gas other than inert/oxygen
gas mixture of which oxygen represents no more than that
normally present in air.

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4. The pressure within the enclosure and gas lines shall not be higher than 1.1 times the atmospheric pressure during the normal
operations of the equipment.

5. Fasteners property class must be A2-70 Stainless Steel.

6. Flameproof joints are not intended to be repaired.

Rosemount 6888Xi Digital Transmitter for general purpose locations

USA

FM Certificate: 3042889
Standards: FM 3810:2005, ANSI/IEC:2003, ANSI/EC 60529:2004
Markings: Type 4X

Special Conditions for Use:

1. Mounting option 01 was not certied to provide Type 4X ingress protection through the panel cut-out opening. The panel
mount gasket has not been tested for Type 4X installation.

Canada

CSA Certificate: 1913435
Standards: CAN//CSA C22.2 No. 61010-1-04, UL 61010-1:2004 (2nd Edition), CAN/CSA-C22.2 No.94-M91 (R2001), UL 50 (11th

Ed.)

Markings: Type 4X

Rosemount SPS 4001B and Rosemount IMPS 4000 Autocalibration Devices for
general purpose locations

USA/Canada

CSA Certificate: 1640823
Standards: CAN/CSA C22.2 No. 61010-1-04; ANSI/UL 61010-1:2004, (2nd Edition); CSA C22.2 No. 94.1-07; ANSI/UL 50 (12th

Edition); CSA C22.2 No. 94.2 (1st Edition); ANSI/UL 50 E First Edition; CSA C22.2 No. 60529:05 (R2010); ANSI/IEC 60529­2004 (R2011)

Markings: Type 4X, IP66

18 19

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Dimensions

Figure 2. RosemountTM 6888A with Standard Housing

Dimensions are in inches [millimeters].

Table 12. Rosemount 6888A with Standard Housing - Removal/Installation

Probe length Insertion depth (L) Minimum removal

length

18 in. (457 mm) 16.10 in. (409 mm) 27 in. (686 mm) 2.25 in. (57.15 mm) 2.38 in. (60.45 mm)

3 ft (0.91 m) 32.52 in. (826 mm) 46.6 in. (1182 mm) 2.25 in. (57.15 mm) 2.38 in. (60.45 mm)

6 ft (1.83 m) 68.52 in. (1740 mm) 82.6 in. (2097 mm) 2.25 in. (57.15 mm) 2.38 in. (60.45 mm)

9 ft (2.74 m) 104.52 in. (2655 mm) 118.6 in. (3011 mm) N/A 2.38 in. (60.45 mm)

12 ft (3.66 m) 140.52 in. (3569 mm) 154.6 in. (3926 mm) N/A 2.38 in. (60.45 mm)

Standard Tube (D1) Abrasion Tube (D2)

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Figure 3. Rosemount 6888A with Autocalibration Housing

Dimensions are in inches [millimeters].

Table 13. Rosemount 6888A with Autocalibration Housing - Removal/Installation

Probe length Insertion depth (L) Minimum removal

length

18 in. (457 mm) 16.10 in. (409 mm) 29.87 in. (759 mm) 2.25 in. (57.15 mm) 2.38 in. (60.45 mm)

3 ft (0.91 m) 32.52 in. (826 mm) 50.1 in. (1271 mm) 2.25 in. (57.15 mm) 2.38 in. (60.45 mm)

6 ft (1.83 m) 68.52 in. (1740 mm) 86.1 in. (2186 mm) 2.25 in. (57.15 mm) 2.38 in. (60.45 mm)

9 ft (2.74 m) 104.52 in. (2655 mm) 122.1 in. (3100 mm) N/A 2.38 in. (60.45 mm)

12 ft (3.66 m) 140.52 in. (3569 mm) 158.1 in. (4015 mm) N/A 2.38 in. (60.45 mm)

Standard Tube (D1) Abrasion Tube (D2)

20 21

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Figure 4. Rosemount 6888A with Autocalibration Housing Field Connections - HART Output

Figure 5. Rosemount 6888C with Standard Housing

Dimensions are in inches [millimeters].

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Table 14. Rosemount 6888C with Standard Housing - Removal/Installation

Probe length Insertion Depth (L) Overall product length

18 in. (457 mm) 18.86 in. (479 mm) 27 in. (686 mm)

3 ft (0.91 m) 36.86 in. (936 mm) 46.6 in. (1182 mm)

6 ft (1.83 m) 72.86 in. (1851 mm) 82.6 in. (2097 mm)

Figure 6. Rosemount 6888C with autocalibration housing

Dimensions are in inches [millimeters].

Table 15. Rosemount 6888C with Autocalibration Housing - Removal/Installation

Probe length Insertion depth (L) Minimum removal length

18 in. (457 mm) 16.10 in. (409 mm) 29.87 in. (759 mm)

3 ft (0.91 m) 32.52 in. (826 mm) 50.1 in. (1271 mm)

6 ft (1.83 m) 68.52 in. (1740 mm) 86.1 in. (2186 mm)

22 23

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December 2017 December 2017Rosemount 6888 Oxygen Transmitter Rosemount 6888 Oxygen Transmitter

Figure 7. Rosemount 6888C with Standard Housing Field Connections - HART® Output

Figure 8. Rosemount 6888A/6888C with Autocalibration Housing Field Connections - HART Output

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Figure 9. Rosemount 6888A/6888C with Autocalibration Housing Field Connections - FoundationTM Fieldbus
Output

Figure 10. Rosemount 6888A New Installation: Square Weld Plate

Dimensions are in inches [millimeters].

24 25

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December 2017 December 2017Rosemount 6888 Oxygen Transmitter Rosemount 6888 Oxygen Transmitter

Figure 11. Rosemount 6888Xi with Panel Mount

Dimensions are in inches [millimeters].

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Figure 12. Rosemount 6888 Xi with Wall/Pipe Mount

Dimensions are in inches [millimeters].

26 27

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December 2017 December 2017Rosemount 6888 Oxygen Transmitter Rosemount 6888 Oxygen Transmitter

Accessories

Figure 13. Manual Calibration Panel

Dimensions are in inches.

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Figure 14. Calibration Gas Flowmeter

Dimensions are in inches.

28 29

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December 2017 December 2017Rosemount 6888 Oxygen Transmitter Rosemount 6888 Oxygen Transmitter

Figure 15. Reference Air Flowmeter and Regulator

Dimensions are in inches [millimeters].

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Table 15. Rosemount 6888A and Rosemount 6888C Accessories

Rosemount 6888A
part number

6A00444G01

6A00444G02

6A00444G03

6A00444G04

6A00444G05

6A00444G06

6A00444G07

3D39004G01 3 ft (0.9 m) ANSI bypass and mounting hardware package for use with 18 in. (457.2 mm)ANSI

3D39004G02 6 ft (1.8 m) ANSI bypass and mounting hardware package for use with 18 in. (457.2 mm) ANSI

3D39004G03 9 ft (2.7 m) ANSI bypass and mounting hardware package for use with 18 in. (457.2 mm) ANSI

3D39004G07 3 ft (0.9 m) DIN bypass and moutning hardware package for use with 18 in. (457.2 mm) DIN

3D39004G08 6 ft (1.8 m) DIN bypass and mounting hardware package for use with 18 in. (457.2 mm) DIN

3D39004G09 9 ft (2.7 m) DIN bypass and mounting hardware package for use with 18 in. (457.2 mm) DIN

3D39003G01 Abrasive shield assembly: ANSI 3 ft (0.9 m)

3D39003G02 Abrasive shield assembly: ANSI 6 ft (1.8 m)

3D39003G05 Abrasive shield assemby: DIN 3 ft (0.9 m)

3D39003G06 Abrasive shield assembly: DIN 6 ft (1.8 m)

3D39003G07 Abrasive shield assembly: ANSI 9 ft (2.7 m)

3D39003G08 Abrasive shield assembly: ANSI 12 ft (3.7 m)

3D39003G11 Abrasive shield assembly: DIN 9 ft (2.7 m)

3D39003G12 Abrasive shield assembly: DIN 12 ft (3.7 m)

3D39003G13 Abrasive shield assembly: ANSI 18 in. (457.2 mm)

3D39003G15 Abrasive shield assembly: DIN 18 in. (457.2 mm)

3D39003G25 Abrasive shield assembly: ANSI 15 ft (4.6 m)

3D39003G27 Abrasive shield assembly: DIN 15 ft (4.6 m)

3D39003G28 Abrasive shield assembly: ANSI 18 ft (5.5 m)

3D39003G30 Abrasive shield assembly: DIN 18 ft (5.5 m)

4512C36G01 New installation square weld plate: 6 in. (152.4 mm) sq., 4.75 in. (120.7) bolt circle, 5/8-11

4512C36G02 New installation, square weld plate: 7.5 in. (190.5 mm) sq., 5.7 in. (145 mm) bolt circle, M16x2

353B30G04 Adapter plate: OXT4A/OCX/6888A ANSI to 3 in. (76.2 mm) 150# ANSI

353B30G01 Adapter plate: OXT4A/OCX/6888A ANSI to 4 in. (101.6 mm) 150# ANSI

353B30G05 Adapter plate: OXT4A/OCX/6888A ANSI to 6 in. (152.4 mm) 150# ANSI

353B30G10 Adapter plate: OXT4A/OCX/6888A ANSI to 3 in. (76.2 mm) 300# ANSI

4851B78G21 Adapter plate: OXT4A/OCX/6888A ANSI to 4 in. (101.6 mm) 300# ANSI

3D39761G02 Spool piece 12 in. (304.8 mm)

1. Cables are supplied with Exd Rated Glands; the cable is not Exd rated, and installation in a hazardous area is the responsibility of the installer/customer. Cables must
be installed in accordance with national and local electrical codes.

1

1

1

1

1

1

1

30 31

Rosemount 6888C
part number

6A00202G09

6A00202G10

6A00202G11

6A00202G12

6A00202G13

6A00202G14

6A00202G15

1

1

1

1

1

1

1

Description

20 ft (6.1 m) cable, traditional architecture, 1/2 NPT / 1/2 NPT

40 ft (12.2 m) cable, traditional architecture, 1/2 NPT / 1/2 NPT

60 ft (18.3 m) cable, traditional architecture, 1/2 NPT / 1/2 NPT

80 ft (24.4 m) cable, traditional architecture, 1/2 NPT / 1/2 NPT

100 ft (30.5 m) cable, traditional architecture, 1/2 NPT / 1/2 NPT

150 ft (45.7) cable, traditional architecture, 1/2 NPT / 1/2 NPT

200 ft (60.1 m) cable, traditional architecture, 1/2 NPT / 1/2 NPT

general purpose Rosemount 6888A, OXT4A, WC3000 O2 probes

general purpose Rosemount 6888A, OXT4A, WC3000 O2 probes

general purpose 6888A, OXT4A, WC3000 O2 probes

general purpose Rosemount 6888A, OXT4A, WC3000 O2 probes

general purpose Rosemount 6888A, OXT4A, WC3000, O2 probes

general purpose Rosemount 6888A, OXT4A, WC3000, O2 probes

studs

studs

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December 2017 December 2017Rosemount 6888 Oxygen Transmitter Rosemount 6888 Oxygen Transmitter

Table 16. Calibration Gas and Reference Air Accessories

Part number Description

6A00252G02 Manual calibration panel, includes reference air regulator and owmeter, calibration gas owmeter

263C152G01 Reference air regulator and owmeter set

771B635H01 Calibration gas owmeter

1A9919G01 O2 cal gas kit: contains 0.4% and 8.0% O2 bottles, 550 L each (requires two CGA 590 regulators)

1A9919G02 O2 cal gas regulators kit: contains two CGA 590 regulators

1A9911G03 Wall bracket kit for two O2 gas bottles

Table 17. Rosemount 6888 Xi Accessories

Part number Description

6P00285H01 Xi/6888Xi panel gasket

6A00237H33 Xi/6888Xi panel mount hardware

6A00237H24 Xi/6888Xi pipe and wall mount hardware

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Rosemount 6888 Oxygen Transmitter

CMB-PDS-6888

Global Headquarters

Emerson Automation Solutions

6021 Innovation Blvd.
Shakopee, MN 55379, USA
[phone] or [phone]
[phone]
[email protected]

North America Regional Office

Emerson Automation Solutions

8200 Market Blvd.
Chanhassen, MN 55317, USA
[phone] or [phone]
[phone]
[email protected]

Latin America Regional Office

Emerson Automation Solutions

1300 Concord Terrace, Suite 400
Sunrise, FL 33323, USA
[phone]
[phone]
[email protected]

Product Data Sheet

December 2017

Europe Regional Office

Emerson Automation Solutions Europe GmbH

Neuhofstrasse 19a P.O. Box 1046
CH 6340 Baar
Switzerland
[phone]
[phone]
R[email protected]

Asia Pacific Regional Office

Emerson Automation Solutions

1 Pandan Crescent
Singapore 128461
[phone]
[phone]
[email protected]

Middle East and Africa Regional Office

Emerson Automation Solutions

Emerson FZE P.O. Box 17033
Jebel Ali Free Zone - South 2
[phone]
[phone]
[email protected]

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Co.
Rosemount and Rosemount logotype are trademarks of Emerson.
All other marks are the property of their respective owners.
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