Ametek Thermox CEM/O2 User manual

Thermox® CEM/O2 Oxygen Analyzer
User Manual
Thermox
150 Freeport Road
Pittsburgh, PA 15238
P/N 90275VE REV. R

ii | Thermox CEM/O2 Analyzer
© 2012 AMETEK
This manual is a guide for the use of the Thermox CEM/O2 Oxygen Analyzer. Data herein has been veried and validated and is believed adequate for
the intended use of this instrument. If the instrument or procedures are used for purposes over and above the capabilities specied herein, conrmation
of their validity and suitability should be obtained; otherwise, AMETEK does not guarantee results and assumes no obligation or liability. This publica-
tion is not a license to operate under, or a recommendation to infringe upon, any process patents.
OFFICES
USA - Pittsburgh
150 Freeport Road
Pittsburgh, PA 15238
Ph. 412-828-9040
Fax [phone]
CHINA
AMETEK Shanghai (SPL)
Room 408, Metro Tower
#30 Tian Yao Qiao Road
Shanghai 200030
Ph. 86 21 6426 8111
Fax [phone]
USA - Delaware
455 Corporate Blvd.
Newark, DE 19702
Ph. 302-456-4400
Fax [phone]
AMETEK Beijing
CITIC Building, Room 2305
19, Jianguomenwai Dajie
Beijing 100004
Ph. 86 10 8526 2111
Fax [phone]
USA - Texas
4903 West Sam Houston Parkway North
Suite A-400
Houston, TX 77041
Ph. 713-466-4900
Fax [phone]
FRANCE
AMETEK Precision Instruments France
Rond Point de l’épine des champs
Buroplus Bat D
78990 Elanbourt
Ph. 33 1 30 68 89 20
Fax [phone]
CANADA
2876 Sunridge Way N.E.
Calgary, AB T1Y 7H9
Ph. 403-235-8400
Fax [phone]
GERMANY
AMETEK GmbH
Rudolf-Diesel-Strasse 16
D-40670 Meerbusch
Ph. 49 21 59 91 36 0
Fax [phone]
MIDDLE EAST – Dubai
AMETEK
PO Box 17067
Jebel Ali Free Zone
Dubai, UAE
Ph. 971-4-881 2052
Fax [phone]
SINGAPORE
AMETEK Singapore Pte. Ltd.
No 43, Changi South Avenue 2, #04-01
Singapore 486164
Ph. 65-64842388
Fax [phone]

Contents | iii
Table of Contents
OFFICES .................................................................................................................ii
Safety Notes ...........................................................................................................v
Electrical Safety......................................................................................................v
Grounding..............................................................................................................v
Environmental Information (WEEE) ...............................................................vii
CHAPTER 1 Overview
Sensor Operations..............................................................................................1-1
Sensor ..................................................................................................................1-2
Basic Elements of the Sensor .....................................................................1-2
The Oxygen Measuring Cell......................................................................1-2
Common Operator Errors ................................................................................1-4
Start-up Checklist...............................................................................................1-5
Technical Support...............................................................................................1-6
Return of Equipment.........................................................................................1-6
CHAPTER 2 Specications
Series 2000 Control Unit....................................................................................2-1
Sensor .................................................................................................................2-2
Remote Calibration Unit (RCU).......................................................................2-3
CHAPTER 3 Installation And Start-Up
Analyzer Location ..............................................................................................3-1
Mechanical Installation .....................................................................................3-2
Mounting the Sensor ..................................................................................3-2
Sample Gas Requirements/Connection ...................................................3-3
Calibration Setup.........................................................................................3-3
Remote Calibration Mechanical Installation (Optional) .......................3-4
Factory-Provided Remote Calibration Unit Setup .................................3-5
Control Unit Mounting .....................................................................................3-8
Weatherproof Wall/Z-Purge Option.........................................................3-9
Wiring.................................................................................................................3-11
General Wiring and Conduit Requirements.........................................3-13
Control Unit Mains Supply Connections ..............................................3-14
Sensor Connections...................................................................................3-17
Current Output Connections ..................................................................3-20
Alarm Contact Connections.....................................................................3-22
Remote Calibration Unit Connections...................................................3-24
RS-485 Communications Connections...................................................3-26
Option Card Installation.................................................................................3-30
Removing Display Module or Power Supply/Keypad Module .........3-30
Adding an Option Card............................................................................3-31
Removing an Option Card.......................................................................3-31

iv | Thermox CEM/O2 Analyzer
CHAPTER 4 Controller / User Interface
Areas of the Control Unit..................................................................................4-1
Control Unit Display...................................................................................4-1
Selecting Menu Options.............................................................................4-2
Exiting Menu Options ................................................................................4-2
Automatic Menu Exit Feature....................................................................4-3
On-Line Help ...............................................................................................4-3
System Password .........................................................................................4-3
Setup Key.............................................................................................................4-4
Display...........................................................................................................4-5
Process Pressure...........................................................................................4-6
System Tests..................................................................................................4-7
System Serial # ............................................................................................4-7
Primary Calibration.....................................................................................4-8
Sensor Config .............................................................................................4-11
Analog Range Key............................................................................................4-12
Analog Output Port...................................................................................4-13
Set Current Range .....................................................................................4-13
Set Track/Hold Option ..............................................................................4-14
Set Current Mode ......................................................................................4-15
Output Filtering Option...........................................................................4-16
Select Function...........................................................................................4-16
Alarm Key..........................................................................................................4-18
Overview of Alarm Functions .................................................................4-19
Alarm Set Points.........................................................................................4-20
Alarm Configure........................................................................................4-21
Relay Configure .........................................................................................4-21
Select Function...........................................................................................4-22
Service Alarm .............................................................................................4-22
Watchdog Relay .........................................................................................4-23
Exception Log.............................................................................................4-23
CHAPTER 5 Calibration
Definitions...........................................................................................................5-2
Calibrations vs. Verifications......................................................................5-2
Span and Zero Calibration Gas Definitions ............................................5-2
Types of Calibrations..........................................................................................5-3
Aborting a Calibration .......................................................................................5-4
Initiate Cal and Initiate Verify ..........................................................................5-5
Auto Calibrate/Auto Verify .........................................................................5-5
Remote Calibrate/Remote Verify...............................................................5-7
Manual Calibrate/Manual Verify...............................................................5-8
Cal/Verify Data....................................................................................................5-9
Cal Gas Value ....................................................................................................5-11
Inject Cal Gas ....................................................................................................5-12
Cal Timers..........................................................................................................5-13

Contents | v
Set Cal Timers - Set Time and Date ........................................................5-14
Set Cal Timers - Auto Cal On/Off............................................................5-14
Set Cal Timers - Cal Gas Duration ..........................................................5-15
Set Cal Timers - Recovery Duration .......................................................5-16
Configure Verify ...............................................................................................5-17
CHAPTER 6 Maintenance and Troubleshooting
System Messages................................................................................................6-2
Auto Cal Pending.........................................................................................6-2
Auto Verify Pending ....................................................................................6-2
Calibration Aborted.....................................................................................6-2
Calibration Required...................................................................................6-2
Cal Verify Aborted .......................................................................................6-2
Primary Calibration.....................................................................................6-2
System Calibrating ......................................................................................6-2
System Verifying Cal ...................................................................................6-2
Error Messages....................................................................................................6-3
Diagnostics Checks ............................................................................................6-5
Wiring Checks ..............................................................................................6-6
Interconnecting Wiring Problem ..............................................................6-6
Thermocouple Checks ................................................................................6-6
Shorted/Failed Thermocouple...................................................................6-6
Reversed Thermocouple Wires .................................................................6-6
Thermocouple Compensation ..................................................................6-6
Circuit Check................................................................................................6-6
Calibration Setup Checks...........................................................................6-8
AC Power Checks.........................................................................................6-9
Furnace Checks............................................................................................6-9
Process Pressure Checks...........................................................................6-10
Cell Checks .................................................................................................6-10
General Troubleshooting.................................................................................6-11
Leak Check .................................................................................................6-11
Series 2000 LEDs...............................................................................................6-12
Auto Calibration Card LEDs ....................................................................6-12
CHAPTER 7 Service and Parts
Cell Replacement/Cleaning ..............................................................................7-2
Thermocouple Replacement ............................................................................7-4
Furnace Replacement ........................................................................................7-6
Parts Replacement List ......................................................................................7-8

vi | Thermox CEM/O2 Analyzer
APPENDIX A Serial Communications
Communication Protocols......................................................................... A-1
Command Message Format...................................................................... A-2
General Serial Communication Commands ..........................................A-3
Development Serial Communication Commands................................A-4
Responses.....................................................................................................A-6
Variable Table ..................................................................................................... A-7
Sample Program ..............................................................................................A-24
Starting/Monitoring a Calibration: An Example ........................................A-25
APPENDIX B Menu Option Charts
APPENDIX C Current Outputs: Other Applications
Powering Current Outputs from an External Power Supply ....................C-1
Modulation of External Power Loop Using Current Outputs...................C-3
APPENDIX D Drawings and Custom Instructions
APPENDIX E SERIES 2000 Controller Setup Parameters
Sensor Default Settings .................................................................................... E-1

Contents | vii
Safety Notes
WARNINGS, CAUTIONS, and NOTES contained in this manual emphasize criti-
cal instructions as follows:
An operating procedure which, if not strictly observed, may result in personal
injury or environmental contamination.
An operating procedure which, if not strictly observed, may result in damage
to the equipment.
Important information that should not be overlooked.
Electrical Safety
Up to 5 kV may be present in the analyzer housings. Always shut down power
source(s) before performing maintenance or troubleshooting. Only a qualified
electrician should make electrical connections and ground checks.
Any use of the equipment in a manner not specified by the manufacturer may
impair the safety protection originally provided by the equipment.
Grounding
Instrument grounding is mandatory. Performance specifications and safety pro-
tection are void if instrument is operated from an improperly grounded power
source.
Verify ground continuity of all equipment before applying power.
NOTE


viii | Thermox CEM/O2 Analyzer
SPECIAL WARNINGS AND INFORMATION
No operator serviceable components inside any components of the CEM/O2
system. Do not remove the cover from any sensor or controller component. Refer
servicing to qualified personnel.
The following applies to the Series 2000 Control unit and the CEM/O2 Division 2
Models:
Power, input, and output (I/O) wiring must be in accordance with Class I, Divi-
sion 2 wiring methods [Article 501-4(b) of the National Electric Code, NFPA 70]
and in accordance with the authority having jurisdiction.
Explosion hazard - substitution of components may impair suitability for
Class I, Division 2.
Explosion hazard - when in hazardous locations, turn off power before replac-
ing or wiring modules.
Explosion hazard - do not disconnect equipment unless power has been
switched off or the area is known to be nonhazardous.
This equipment is suitable for use in Class I, Division 2, Groups A, B, C, and
D or nonhazardous locations only.
The maximum ambient temperature for the Series 2000 control unit is 50°C
(122°F)
The Series 2000 Control Unit with CEM/O2 sensor is a complex piece of equip-
ment that should only be serviced by a qualified service technician with expertise
in instrument technology and electrical systems. AMETEK recommends that all
equipment requiring service be sent back to the factory. You should only attempt
to repair or service this equipment after receiving training from an AMETEK/
P&AI Division training representative. If you decide to service this equipment
be aware that high voltages, high temperatures, and other potentially hazardous
conditions may arise.
NOTE


Contents | ix
Environmental Information (WEEE)
This AMETEK product contains materials that can be reclaimed and recycled.
In some cases the product may contain materials known to be hazardous to the
environment or human health. In order to prevent the release of harmful sub-
stances into the environment and to conserve our natural resources, AMETEK
recommends that you arrange to recycle this product when it reached its “end of
life”.
Waste Electrical and Electronic Equipment (WEEE) should never be disposed of
in a municipal waste system (residential trash). The Wheelie Bin marking on this
product is a reminder to dispose of the product properly after it has completed
its useful life and been removed from service. Metals, plastics, and other com-
ponents are recyclable and you can do your part by doing one of the following
steps:
•When the equipment is ready to be disposed of, take it to your local
or regional waste collection administration for recycling.
•In some cases, your “end of life” product may be traded in for credit
towards the pur-chase of new AMETEK instruments. Contact your
dealer to see if this program is avail-able in your area.
•If you need further assistance in recycling your AMETEK product,
contact our ofce listed in the front of the instruction manual.

x | Thermox CEM/O2 Analyzer
Declaration of Conformity
Manufacturer’s Name: AMETEK/Thermox®
Manufacturer’s Address: Process & Analytical Instruments Division
150 Freeport Road
Pittsburgh, PA 15238
declares that the products:
Product Names: CEM O2 Oxygen Analyzer using Series 2000 Controller
O2-Only RCU
Conform to the following standards:
EMC compliance:
EMC Directive 2004/108/EC
Immunity:
EN 50082-2:1995 Generic - Heavy Industrial Equipment
EN 50082-1:1997 Generic - Residential, Commercial, Light Industrial Equipment
EN 61326:1997 Measuring Equipment (Heavy Industrial)
Emissions:
EN 55011:1998 Class A, ISM Equipment
Safety Compliance:
UL 3101-1 UL Listed Inspection and Measuring Electrical Equipment
CAN/CSA 22.2 No. 1010.1-92 cUL Listed Inspection and Measuring Electrical Equipment
Low Voltage Directive 73/23/EEC:
EN61010-1:1993,
Amendment A2: 1995 Electrical Equipment for Measurement, Controls,
and Laboratory Use
Series 2000 Controller and O2 -Only RCU, O2 also conform to the following safety standard:
UL 1604 UL Listed Process Control Equipment for Use in Hazardous Locations
Manufacturer’s Address in Europe:
AMETEK Precision Instruments Europe GmbH
Rudolf-Diesel-Strasse 16
D-40670 Meerbusch, Germany
Mark Coppler
Compliance Engineer
July 2001

Contents | xi
WARRANTY AND CLAIMS
We warrant that any equipment of our own manufacture or manufactured for us pursuant to
our specifications which shall not be, at the time of shipment thereof by or for us, free from
defects in material or workmanship under normal use and service will be repaired or replaced
(at our option) by us free of charge, provided that written notice of such defect is received by us
within twelve (12) months from date of shipment of portable analyzers or within eighteen (18)
months from date of shipment or twelve (12) months from date of installation of permanent
equipment, whichever period is shorter. All equipment requiring repair or replacement under
the warranty shall be returned to us at our factory, or at such other location as we may desig-
nate, transportation prepaid. We shall examine such returned equipment, and if it is found to
be defective as a result of defective materials or workmanship, it shall be repaired or replaced as
aforesaid. Our obligation does not include the cost of furnishing any labor in connection with
the installation of such repaired or replaced equipment or parts thereof, nor does it include the
responsibility or cost of transportation. In addition, instead of repairing or replacing the equip-
ment returned to us as aforesaid, we may, at our option, take back the defective equipment, and
refund in full settlement the purchase price thereof paid by Buyer.
The warranty shall not apply to any equipment (or part thereof) which has been tampered with
or altered after leaving our control or which has been replaced by anyone except us, or which
has been subject to misuse, neglect, abuse or improper use. Misuse or abuse of the equipment,
or any part thereof, shall be construed to include, but shall not be limited to, damage by negli-
gence, accident, fire or force of the elements. Improper use or misapplications shall be construed
to include improper or inadequate protection against shock, vibration, high or low temperature,
overpressure, excess voltage and the like, or operating the equipment with or in a corrosive,
explosive or combustible medium, unless the equipment is specifically designed for such ser-
vice, or exposure to any other service or environment of greater severity than that for which the
equipment was designed.
The warranty does not apply to used or secondhand equipment nor extend to anyone other
than the original purchaser from us.
THIS WARRANTY IS GIVEN AND ACCEPTED IN LIEU OF ALL OTHER WARRANTIES,
WHETHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION AND WARRAN-
TIES OF FITNESS OR OF MERCHANTABILITY OTHER THAN AS EXPRESSLY SET FORTH
HEREIN, AND OF ALL OTHER OBLIGATIONS OR LIABILITIES ON OUR PART. IN NO
EVENT SHALL WE BE LIABLE UNDER THIS WARRANTY OR ANY OTHER PROVISION OF
THIS AGREEMENT FOR ANY ANTICIPATED OR LOST PROFITS, INCIDENTAL DAMAGES,
CONSEQUENTIAL DAMAGES, TIME CHANGES OR ANY OTHER LOSSES INCURRED BY
THE ORIGINAL PURCHASER OR ANY THIRD PARTY IN CONNECTION WITH THE PUR-
CHASE, INSTALLATION, REPAIR OR OPERATION OF EQUIPMENT, OR ANY PART THERE-
OF COVERED BY THIS WARRANTY OR OTHERWISE. WE MAKE NO WARRANTY, EXPRESS
OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY WARRANTIES OF FITNESS OR
OF MERCHANTABILITY, AS TO ANY OTHER MANUFACTURER’S EQUIPMENT, WHETHER
SOLD SEPARATELY OR IN CONJUNCTION WITH EQUIPMENT OF OUR MANUFACTURE.
WE DO NOT AUTHORIZE ANY REPRESENTATIVE OR OTHER PERSON TO ASSUME FOR
US ANY LIABILITY IN CONNECTION WITH EQUIPMENT, OR ANY PART THEREOF, COV-
ERED BY THIS WARRANTY.

xii | Thermox CEM/O2 Analyzer
This page intentionally left blank.

Overview | 1-1
OVERVIEW
Sensor Operations
The sample flows through the sensor plumbing because of convective mo-
tive force. The sample in the vertical cell housing is heated to 695°C, while
the sample in the return vertical tube is at about 250°C. This temperature
difference generates a density difference, which circulates the gas through
the system.
Follow these cautions when working on the sensor:
Remove AC power from the sensor and control unit and allow the
sensor to cool for at least one hour before performing any maintenance
or troubleshooting activities.
The outside of the sensor cover and all sensor assembly components
are hot during normal operation (up to 500° F, 260° C inside the
cover). Allow sensor components to cool for at least an hour before
working inside the sensor. Use caution and wear appropriate gloves
when handling components or when touching the sensor cover!

1-2 | Thermox CEM/O2 Analyzer
Sensor
Basic Elements of the Sensor
The CEM O2 analyzer consists of the following basic systems:
 The Plumbing
All inlet and outlet tubing (cell housing), the oxygen cell, the oxygen
cell fitting, and the combustibles flow block and detector (for combus-
tibles). Also includes the calibration gas inlet and aspirator assembly,
with the aspirator used to pull the sample into the sensor.
 The Measuring System
The oxygen cell, combustibles detector (RTD or hot-wire type), meth-
ane detector, interconnecting wiring, and control unit.
 The Temperature System
The electrical cell heater (furnace), sensor case heaters, the type “K”
thermocouple (maintains cell operating temperature), and the sensor
board containing cold junction compensation. The sensing cell oper-
ates at a constant temperature. The circuit board in the sensor terminal
box switches power to the furnace from the AC mains connected to
the sensor. This board also provides cold junction compensation to the
thermocouple circuit.
The Oxygen Measuring Cell
The sensing element itself is a closed-end tube or disk made from ceramic
zirconium oxide stabilized with an oxide of yttrium or calcium. Porous
platinum coatings on the inside and outside serve as a catalyst and as
electrodes. At high temperatures (generally above 1200°F/650°C), oxygen
molecules coming in contact with the platinum electrodes near the sensor
become ionic. As long as the oxygen partial pressures on either side of the
cell are equal, the movement is random and no net flow of ions occurs.
If, however, gases having different oxygen partial pressures are on either
side of the cell, a potentiometric voltage is produced (See Figure 1-1).
The magnitude of this voltage is a function of the ratio of the two oxygen
partial pressures. If the oxygen partial pressure of one gas is known, the
voltage produced by the cell indicates the oxygen content of the other gas.
A reference gas, usually air (20.9% O2), is used for one of the gases.

Overview | 1-3
Figure 1-1. Zirconium oxide cell principle of operation.
Since the voltage of the cell is temperature dependent, the cell is main-
tained at a constant temperature. Some newer high temperature insitu
models use the heat from the process to heat the sensor, and the process
temperature is continuously measured and used in the software calcula-
tion. The oxygen content is then determined from the Nernst equation:
E = In
RT
4F
O1
O2
where R and F are constants, T is absolute temperature, and O1and O2
are the oxygen partial pressures on either side of the cell.
For measuring oxygen in non-combustibles gases, the calibration of an
analyzer is obtained from the formula:
AT = 48.0 at 695°C
E = A*T*Log 20.9%
O2Unk%
Where Ais a constant, Tis the cell temperature on an absolute scale (°C +
273) and O2 Unk% is the unknown oxygen concentration of the gas to be
analyzed, and which is calculated by the analyzer.

1-4 | Thermox CEM/O2 Analyzer
Common Operator Errors
These are some common errors to avoid; they are avoided, your analyzer
will operate with a minimum of maintenance and troubleshooting.
Do not use pipe dope or any other contaminant that gives off combus-
tible vapor which may cause erroneous measurements on any joints of
the sample tubing.
Do not use calibration gases if they contain a mixture of oxygen and
combustibles.
Always introduce calibration gases at the recommended flow rate.
When working on the plumbing inside the sensor cabinet, turn the
power off - the heater has exposed windings and a short to the plumb-
ing will blow the fuse and could damage the furnace or thermocouple.
Do not handle the cell excessively. Do not try to clean the cell except
by rinsing. If you need to handle the cell, grasp by touching the seal
fitting at the top never touch the bare part of the cell.
Do not remove a cell or type “K” thermocouple that you may want to
use again when the inside of the furnace is still hot - severe thermal
shock can be destructive to the cell or thermocouple.
Always replace the metal O-ring when replacing the oxygen cell.
Allow at least one hour after closing the sensor door for readings to
stabilize. Allow more time after a cold startup.

Overview | 1-5
Start-up Checklist
Review the installation chapter and installation drawing, which is
provided in this packet and also in the User’s Manual.
Install the sensor on the process. The ambient temperature must not
exceed 50°C (122°F).
Install the control unit. The ambient temperature must not exceed
50°C (122°F).
— Do not create any additional conduit entries in the enclosure.
 Interconnect the control unit and the sensor per the appropriate inter-
connecting drawing.
 The specified cable must be used in order to insure proper operation of
the systems.
 Keep the interconnecting located in the control unit as short as possible.
A service loop need not be used.
 Maintain the ordered wire pairs per the drawing.
 Terminate the “shields” and/or “drains” of the cable properly.
 Connect AC mains supply to the control unit and the sensor. Make
sure that the AC voltage is within specified limits.Start up Checklist

1-6 | Thermox CEM/O2 Analyzer
Technical Support
AMETEK/Thermox is committed to providing you the best technical sup-
port in the industry. If you need service or application assistance, please
call AMETEK at [phone], or your local AMETEK/Thermox represen-
tative. Before you call the factory for technical support, run test gases and
record the following values (you may be asked by the factory to provide
this information when receiving service):
Cell millivolts
Thermocouple millivolts
Cell temperature
See “Display” under Setup key in Chapter 4 for help on how to get this
information displayed on your IQ Link.
Return of Equipment
If you need to return equipment, you will be asked to provide the follow-
ing information before obtaining a Return Material Authorization (RMA)
number.
Billing and shipping address
Model number
Serial number
Purchase order number
Telephone number
Before returning material, you must get an RMA number from the
factory.
NOTE


Specications | 2-1



Four-line x 20-character vacuum uorescent. Displays combinations of oxy-
gen, ppm combustibles, methane, time and date, cell temperature, user-pro-
grammable text, thermocouple mV or cell mV. Password protection, program-
mable pressure compensation and context-sensitive help are also provided.

Two isolated linear current outputs. Select O2, cell temperature, thermo-
couple mV or cell mV. Each output can be 4-20 mA, 0-20 mA, 20-4 mA or
20-0 mA and is fully scalable. Hold or track during calibration and select
degree of damping. Maximum load 1200 Ohms.

Two independent oxygen alarms, each high or low selectable. One alarm
can be allocated to % oxygen, calibrate or verify. Set relays to energize or
de-energize on alarm.
 0.5A, 30V, 10VA max. noninductive load, AC or DC

Watchdog timer and service alarms. System test for A/D, RAM, EEPROM
and keypad. Display Line 4 reserved for full text error and diagnostic mes-
sages. Twenty-entry event log.

Store last calibration and verication data. Selectable calibration gas run
time and process recovery time. Timed automatic calibration with optional
remote calibration unit. Oxygen cell lifetime extender. Single gas verica-
tion that analyzer is within calibration limits.
 RS-485, 2-way addressable.

Ambient Temp: 14 to 122° F (-10 to 50° C)
Relative Humidity: 10% to 80%, non-condensing
IEC Installation Category II
IEC Pollution Degree 2
Max. Altitude: 2000 meters

 Nominal 115-230 VAC ±10%, 47-63 Hz. max.; 75 VA max.

Standard GP (General Purpose) 19” rack mount, GP panel or wall mount,
weatherproof NEMA 4 (IP56) and NEMA 4X (IP 56) enclosures available.
All are UL Listed for NEC Class I, Division 2 areas.

2-2 | Thermox CEM/O2 Analyzer
Sensor
Operatng Range From 0-1% to 0-100% O2
Accuracy ± 0.75% of measured value or ± 0.05% oxygen,
whichever is greater
Response Time Less than 4 seconds at 2 scfh from 2% O2to 20% O2
Drift < 0.1% of cell output per month (< 0.005% O2per
month with 2% O2applied)
Maximum Inlet
Temperature 400°F (204°C)
Sample Pressure ± 2 psig max. (0.14 kg/cm2)
Sample Flow 2 to 20 scfh (0.94 to 9.4 L/min)
Environment
Ambient Temp.: -0°F to 122°F (-18°C to 50°C);
Relative Humidity: 10% to 90%, non-condensing
IEC Installation Category II
IEC Pollution Degree 2
Max. Altitude: 2000 meters
Power Requirements
115 VAC, ± 10%, 47-63 Hz,
1670 VA max.
230 VAC, ± 10%, 47-63 Hz,
1650 VA max.
Calibration Gas Requirements
Use calibration gases @ 2 to 20 scfh (0.94 to 9.4 L/min)
O2Span Gas:
O2Zero Gas: Minimum one decade above zero gas (10x greater)
2% or from 0.1 to 10% O2, balance N2
System Compliance
EMC Compliance:
Safety Compliance:
2004/108/EC
73/23/EEC
NOTES
1. All static performance characteristics are with operating variables constant.
2. System accuracy referenced to 0.1 to 10% calibrated range.