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Rosemount™ CX1100
In Situ Oxygen Transmitter
Quick Start Guide
00825-0100-4110, Rev AB
April 2020
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Quick Start Guide April 2020
Essential instructions
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. You
must adhere to the following instructions and integrate them into your safety program when
installing, using, and maintaining Emerson's Rosemount 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.
• 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.
• Install equipment as specified in the installation instructions of the appropriate Reference Manual
and per applicable local and national codes. Connect all products to the proper electrical and
pressure sources.
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WARNING
RISK OF ELECTRICAL SHOCK
Failure to install covers and ground leads could result in serious injury or death.
Disconnect the main power wire from the separate power source before servicing.
Do not operate or energize transmitter with case open!
Wiring connected in this box must be rated at least 240 Vac and 14 gauge.
Non-metallic cable strain reliefs do not provide grounding between conduit connections! Use
grounding type bushings and jumper wires.
Seal unused cable conduit entries securely with non-flammable enclosures to provide
transmitter's enclosure integrity in compliance with personal safety and environmental protection
requirements. Seal unused conduit openings with Type 4X or IP66 conduit plugs to maintain the
ingress protection rating (Type 4X) of transmitter's enclosure.
Operate only with front panel fastened and in place.
For safety and performance, connect and properly ground the system through a three wire power
source.
Proper use and configuration is the operator's responsibility.
Install all protective equipment covers and safety ground leads after installation.
Provide local ground connection to the transmitter in order to avoid electric shock. The ground
conductor should be equal to or greater than 16 AWG for a copper conductor in free air or 12
AWG for an enclosed copper conductor.
Disconnect and lock out power before connecting the power supply.
Disconnect and lock out power before working on any electrical components. There is voltage up
to 240 Vac. Verify the reliability and continuity of the grounding of the probe connection before
powering the equipment.
To meet the Safety Requirements of IEC 61010-1 (EC requirement) and ensure safe operation of
the equipment, make a connection to the main electrical power supply through a circuit breaker
(max 10 A) which will disconnect all current-carrying conductors during a fault situation. The
circuit breaker should also include a mechanically operated isolating switch. If it does not, then
locate another means of disconnecting the supply from the equipment close by. Circuit breakers
or switches must comply with a recognized standard, such as IEC 60947.
Ensure that all equipment doors are closed and protective covers are in place, except when
maintenance is being performed by qualified people, to prevent electrical shock and personal
injury.
WARNING
If the equipment is used in a manner not specified by the manufacturer, the protection provided by the
equipment may be impaired.
CAUTION
If the ducts will be washed down during outage, make sure to power down the probes and remove
them from the wash area.
When replacement parts are required, ensure that qualified people use replacement parts
specified by Emerson. Unauthorized parts and procedures can affect the product's performance,
place the safe operation of your product at risk, and void your warranty. Look-alike substitutions
may result in fire, electrical hazards, or improper operation.
Note
The information contained in this document is subject to change without notice.
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Symbols
Earth (ground) terminal
Protective conductor terminal
Risk of electrical shock
Refer to Reference Manual or Quick Start Guide
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.
Contents
Install........................................................................................................................................... 5
Wire........................................................................................................................................... 17
Start up...................................................................................................................................... 22
Calibration................................................................................................................................. 23
Product certifications................................................................................................................. 25
Declaration of Conformity..........................................................................................................27
China RoHS table........................................................................................................................28
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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 Quick Start Guide.
WARNING
ELECTRIC SHOCK
Failure to install covers and ground leads could result in serious injury or
death.
Install all protective equipment covers and safety ground leads after
installation.
CAUTION
Equipment damage
Damage to the transmitter may result.
Do not allow the temperature of the probe electronics to exceed 194 °F (90
°C)
1.1 Install probe
Emerson can supply a weld plate for welding to the flue gas duct for new
installations.
Procedure
1. If using the standard square weld plate (Figure 1-2) 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. (63.5 mm).
2. Insert probe through the opening in the mounting flange and bolt
through the probe gasket and flange.
For horizontal installations, the breather port must be oriented such
that it is facing downward.
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Figure 1-1: Probe Installation
All dimensions are in millimeters with inches in parentheses.
A. M6 X 1 X 25 hex head machine screw (3X)
B. Calibration gas, 4.8 mm (3/16-in.) tube fitting, 2.82 liter/minute (10
SCFH), 138 kPa (20 psig)
C. M5 X 0.8 x 10 pan head machine screw, ground screw
D. ½ national pipe thread (NPT) conduit connection (power, signal)
E. Breather port
F. Calibration gas connection
Table 1-1: Removal/Installation
Probe length Removal envelope
.5 m (19.68 in.) 750 mm (30 in.)
1 m (39.37 in.) 1250 mm (49 in.)
2 m (78.74 in.) 2250 mm (89 in.)
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Figure 1-2: Probe Installation
All dimensions are in millimeters with inches in parentheses.
Square weld plate, ANSI pattern part 4512C34G01
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Table 1-2: Mounting Flange
ANSI DIN
Flange diameter 185 mm (7.28 in.)
Hold diameter 19.1 mm (.75 in.)
4 holes equally spaced onBC120.7 mm (4.75 in.) 145 mm (5.71 in.)
Figure 1-3: Drip Loop and Insulation Removal
A. Note
Replace insulation after installing Rosemount CX1100.
B. Drip loop
C. Stack duct or metal wall
D. Adapter plate
E. Insulation
Note
Probe installation may be vertical or horizontal.
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1.2 Mount remote display
The remote transmitter is available in a panel mounting or wall/pipe
mounting configuration.
Prerequisites
You need a wrench and bolts to mount the transmitter.
Note
Dimensions are in inches with millimeters in parentheses.
Figure 1-4: Wall/Surface Mount Front View
A. Four cover screws
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Figure 1-5: Wall Mount Side View
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Figure 1-6: Pipe Mount Bottom View
A. Front panel
B. Six ½-in. (12.7 mm) national pipe thread (NPT) conduit openings
C. Mounting bracket
D. U-bolts
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Figure 1-7: Pipe Mount Side View
A. 2-in. (50.8 mm) pipe supplied by customer
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Figure 1-8: Panel Mount Front View
The front panel is hinged at the bottom. The panel swings down for easy
access to the wiring locations.
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Figure 1-9: Panel Mount Side View
A. Maximum panel thickness 0.375 in. (9.52 mm)
B. Panel mount gasket
C. Four mounting brackets and screws provided
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Figure 1-10: Panel Mount Bottom View
A. Six ½-in. (12.7 mm) NPT conduit openings
Figure 1-11: Panel Cut-Out
Procedure
1. Ensure all components are available to install the remote transmitter.
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2. Select a mounting location near or removed from the probe.
Consider the temperature limitations of the remote transmitter.
Refer to product specifications when selecting the mounting
location.
3. Mount at a height convenient for viewing and operating the
interface.
Emerson recommends approximately 5 ft. (1.5 m).
4. The keypad window on the transmitter may have an exterior
protective membrane. Remove the protective membrane prior using
the transmitter.
CAUTION
Failure to remove the protective membrane may cause the display to
appear distorted. The membrane may become difficult or impossible
to remove after extended use at elevated temperatures.
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2 Wire
All wiring must conform to local and national codes.
WARNING
Failure to follow safety instructions could result in serious injury or death.
Before installing the equipment, read the safety instructions at the front of
this document.
WARNING
To maintain proper earth grounding, ensure a positive connection exists
between the probe terminations housing and earth. The connecting wire
must be 14 AWG minimum.
WARNING
Line voltage, signal, and relay wiring must be rated for at least 221 °F (105
°C).
WARNING
The grounding plate inside the remote transmitter is not bonded to
protective earth and does not provide adequate grounding.
If using metal conduit with the remote transmitter, reliably bond the conduit
to protective earth.
2.1 Interconnect cable installation specifications
Customer supplied cable up to 200 ft. (60 m) long, rated for -40 to 194 °F
(-40 to 90 °C) and voltage 300 VACrms
• Heater power: Three multi conductor 18 ga shielded cable to connect
the heater control signal
• Probe sensing: Three twisted pair conductors 22 ga overall shielded
cable to connect the thermocouple, O2, and CJC signals
You can purchase these as two separate cables.
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2.2 Connect the cables
The probe transmits raw voltages from the oxygen sensor and heater
thermocouple to the remote transmitter. The remote transmitter also
controls power to the probe heater in order to maintain the correct sensor
temperature.
This arrangement calls for interconnect wiring consisting of nine
conductors. Given the recommended wire specifications, the maximum
length for this cable is 200 ft. (60 m) (refer to Interconnect cable installation
specifications).
CAUTION
To maintain EMC/EMI noise protection, connect the customer-supplied nine
conductor cable and cable glands properly to ground.
Procedure
1. Run the signal and power cables between the probe and the
installation site for the optional remote transmitter.
2. Remove the covers from the probe and the remote transmitter (if
applicable).
3. Feed all probe wiring through the conduit port of the probe.
4. Connect probe heater power leads to probe connector.
Refer to Figure 2-1.
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Figure 2-1: Closeup Wiring Diagram
A. Labels
B. M4 X 0.7 X 8 pan head screw machine screw (internal ground)
5. Connect O2 signal, thermocouple, and cold junction (CJC) wires from
the probe to the transmitter
6. At the transmitter, connect the cable leads to the connectors on the
sensor board as indicated in Figure 2-2 and Figure 2-3.
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Figure 2-2: Wiring Head
A. 4-20 mA out
B. Heater power to probe
C. Power supply
D. Combustion sensor
E. Shield ground
F. Alternate 4-20 mA out
G. Signal from probe
H. Power to remote transmitter
I. Alarm relay
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Figure 2-3: Wiring Boards
A. AC power wires from power supply board to the underside of the
sensor board are provided with the sensor board.
B. AC input
C. Heater power: terminates to underside of the sensor board.
D. Probe
E. Probe sensing: connects shield to ground.
F. 4-20 mA output
G. S1 Dip switch is for factory use only and should be in the Off
position.
H. Not used
I. Sensor board
J. Ribbon
K. Main board
L. Power supply
M. Alarm relays output
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3 Start up
Procedure
1. Apply AC line power to the remote transmitter.
The probe takes approximately 45 minutes to warm up to the
1357 °F (736 °C) setpoint. The 4-20 mA signal remains at a default
value of 3.5 mA, and the O2 reading remains at 0% through the
warm-up period.
2. After warm-up, the probe begins reading oxygen, and the 4-20 mA
output is based on the default range of 0 to 10 percent O2.
If there is an error condition at startup, an alarm message is displayed
on the remote transmitter.
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4 Calibration
You can calibrate the Rosemount CX1100 in the installed condition without
removing the instrument from the process duct and also while the
combustion process is online.
Gas is applied to the sensor through the calibration gas fitting. New
Rosemount CX1100 systems are factory calibrated and are generally
acceptable for initial start-up and operation. To gain high accuracy, calibrate
a system during normal operating conditions. Emerson recommends
calibrating on a semi-annual to annual basis for most applications; however
actual calibration frequency may vary per process unit.
Use a two-point calibration. Emerson recommends using 0.4 percent O2 and
8.0 percent O2 gases with a balance of nitrogen, as those are the gases used
at the factory. Calibration gases with other oxygen concentrations are
acceptable. If using different calibration gas values, you must do some
additional configuration through the transmitter. Emerson does not
recommend pure nitrogen as a calibration gas. Use a two-stage pressure
regulator to establish a pressure of 20 psig (137.9 kPa) from the bottles and
set the flowmeter to 5 scfh (2.5 L/min) flow rate.
4.1 Calibrate
Intiate probe calibration from the remote transmitter. The transmitter
display prompts you with the calibration instructions.
Procedure
1. Press the x1 or x2 menu button on the transmitter display to enter
the probe.
2. Navigate, using Up and Down buttons to Setup; press Enter.
3. Navigate to Cal Gas values; press Enter.
4. Navigate to Cal Gas 1 and press Enter twice to highlight the value
setting.
5. Use the Up and Down buttons to set Cal Gas 1 value and Left and
Right buttons to move to decimals setting.
6. After setting the correct value, press Enter and press Left to go to the
Calibration Setup for Cal Gas 2, Gas time, and Purge time settings.
7. After setting the values, press Left to go up to the Calibration
submenu.
0.4 percent O2, 8.0 percent O2, and 300 seconds are the defaults.
8. Navigate using the Up and Down buttons to Calibration and press
Enter to start.
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9. Follow the instructions on the display, manually applying calibration
gases to the calibration port.
Emerson recommends applying 0.4 percent and 8.0 percent O2 at 5
SCFH.
10. After the calibration is finished, press Left and use the Up and Down
buttons the check the current and previous ten calibration logs.
After completing the procedure, the software calculates new calibration
values and determines whether they meet an acceptance criteria. If
successful, the new calibration values automatically replace the previous
values. In the event the calibration values do not meet the accepted
performance criteria, the existing calibration values remain in effect, and
Emerson recommends replacing the probe.
CAUTION
Many combustion processes operate at a slight negative pressure (draft
pressure) and can draw ambient air down the cal gas lines and into the
sensing cell, causing a false elevated oxygen reading.The same phenomenon
is possible if the calibration gas hoses become degraded or loose.
Ensure that you replace the calibration cap tightly after completing
calibration.
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5 Product certifications
Rev. 1.0
5.1 European Directive information
A copy of the EU Declaration of Conformity can be found at the end of the
Quick Start Guide. The most recent revision of the EU Declaration of
Conformity can be found at Emerson.com/Rosemount.
5.2 Ordinary location certification
As standard, the transmitter has been examined and tested to determine
that the design meets the basic electrical, mechanical, and fire protection
requirements by a nationally recognized test laboratory (NRTL) as accredited
by the Federal Occupational Safety and Health Administration (OSHA).
5.3 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
classification, gas, and temperature class. This information is clearly defined
in the respective codes.
5.4 North America
CSA
Certificate
Standards
Markings
Conditions of Acceptability:
1. The measuring of net O2 range is limited 0 to 23 percent.
2. The equipment shall be installed by manufacturer or manufacturer
trained personnel.
3. This equipment is for permanently connection to power source with
approved power cord at end installation in accordance with local
codes.
Quick Start Guide 25
70172073
CAN/CSA C22.2 no. 61010-1-12, CAN/CSA
C22.2 no. 61010-2-010:15, UL 61010-1 (3rd
edition), UL 61010-2-10 (3rd edition), UL 50E
(2012), C22.2 no. 94.2-15
Type 4X, IP66
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Quick Start Guide April 2020
4. The probe unit of the equipment shall be connected to protective
earth separately at end installation.
5. End installation to provide the means of disconnection from power
sources.
6. End installation to comply with the requirement of IP66 and 4X.
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6 Declaration of Conformity
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7 China RoHS table
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*00825-0100-4110*
00825-0100-4110, Rev. AB
Quick Start Guide
April 2020
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