CAI 650 Series User manual

S E R I E S
6 5 0
6 5 0
6 5 0 CLD/O
CLD/O
CLD/O2
2
2
USER’S MANUAL
Note: For Analyzers Sold After
June, 2007 Please See Addendum
Starting After Page 86 of This
Manual
1312 West Grove Avenue
Orange, CA 92865-4134
Phone: [phone] Fax: [phone]
www.gasanalyzers.com

Section 1 Model 650 Noxygen Analyzer
California Analytical Model 650 Noxygen Operators Manual
650 NOXO2_v9.0.doc Page 2 of 86
650 Quick Start Guide
1) Plug in the analyzer and turn the power on.
2) Connect the appropriate gas lines and vents to the analyzer.
3) Allow the analyzer to stabilize for at least one (1) hour.
4) During the analyzer’s stabilization period, setup the analyzer to the desired
configuration.
a) Set the analyzer’s output as desired.
i) From the Main Menu press F5 (Setup) then F7 (System Settings.)
ii) Press F3 (output assignments) to setup the output channels.
(1) Set to real time
(2) Set channel 2 to NO
(3) Set channel 3 to NO2
(4) Set channel 4 to O2
(5) Press back to return to the system settings menu.
iii) Press F4 (output range) to setup the output ranges
(1) Set the Min and Max to zero (0). This will cause the outputs to
default to the analyzer ranges.
(2) Set the outputs for milliamps (mA) or voltage (V) as desired.
(a) The mA setting will give 4-20 mA or 2-10V (if 500 ohm
resisters are installed).
(b) The V setting will give 0-20mA or 0-10V (if 500 ohm resistors
are installed).
5) Connect all appropriate analog outputs.
a) Pin 1 is the output common (ground).
b) Pins 2, 3, 4, and 5 are output channels 1, 2, 3, and 4 as setup in step 4.a.ii.
c) If the output is set for voltages but there is no voltage output, you will need to
install a 500 ohm resistor between pin 1 and the channel you are trying to
measure. You will have to measure the voltage drop across this resistor.
6) Press F1 from the analyzer’s main Menu to get to the measurement screen.
a) The individual NO, NOx, and NO2 channels only work while measuring in dual
mode. (Real time and O2 output continuously)
b) Press F2 while in the measurement screen to get to dual measurement mode.
7) Supply sample gas to the analyzer.
8) The measurement screen should indicate the concentration of the sample gas. If
the concentration is incorrect, the analyzer will need to be Zeroed and Spanned
using your calibration gases. Please reference the appropriate section of the
manual for a description on how to zero and span the analyzer.

Section 1 Model 650 Noxygen Analyzer
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TABLE OF CONTENTS
1. Introduction....................................................................................................................10
1.1. Overview...................................................................................................................10
1.2. Unpacking Instructions .............................................................................................10
1.3. Reporting Damage ...................................................................................................10
1.4. Contact Information ..................................................................................................10
1.5. Warranty Certificate..................................................................................................11
2. Features..........................................................................................................................12
2.1. Description ...............................................................................................................12
2.2. Features-General .....................................................................................................12
2.3. Model 650 CLD/Paramagnetic Specifications ..........................................................13
3. Installation......................................................................................................................14
3.1. General.....................................................................................................................14
3.2. Site and Mounting.....................................................................................................14
3.3. Electrical...................................................................................................................15
3.4. Analog Output Connections (Appendix) ...................................................................16
3.5. Gases .......................................................................................................................16
3.6. Gas Handling Equipment..........................................................................................16
3.7. Gas Connections......................................................................................................16
3.8. Sampling Requirements ...........................................................................................17
3.8.1. Filtration.................................................................................................................... 17
3.8.2. Condensation ........................................................................................................... 17
3.8.3. Presence of Corrosive Gases .................................................................................. 17
3.8.4. Gas Temperature ..................................................................................................... 17
3.8.5. Pressure and Flow Rates......................................................................................... 17
4. Basic Operation.............................................................................................................18
4.1. Display......................................................................................................................18
4.2. Menu Tree ................................................................................................................19
4.3. Keyboard ..................................................................................................................22
4.3.1. Operation with the Cursor Keys and the Enter Key ................................................. 22
4.3.2. Operation with the Function Keys ............................................................................ 22
4.3.3. Read/Change Parameters ....................................................................................... 22
5. Operating Structure.......................................................................................................23

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5.1. The Main Menu.........................................................................................................24
6. Menu Structure ..............................................................................................................25
6.1. User Functions (Level 1) ..........................................................................................25
6.2. Advanced User Functions (Level 2) .........................................................................25
6.3. Maintenance Functions (Level 3) .............................................................................25
6.4. System User Functions (Level 4) .............................................................................25
7. Main Menu Function Descriptions...............................................................................26
7.1. F1 Measurements.....................................................................................................26
7.1.1. F1 NO or NOx Measurement.................................................................................... 26
7.1.2. F2 NO + NOx Measurement..................................................................................... 27
7.2. F3 Diagnostics..........................................................................................................27
7.3. Select Range............................................................................................................28
7.4. F2 Purge Analyzer....................................................................................................28
7.5. F3 Diagnostics..........................................................................................................29
7.6. F4 Calibrations .........................................................................................................29
7.6.1. F1 Automatic Calibration.......................................................................................... 30
7.6.2. F2 Manual Calibration ............................................................................................. 31
7.7. F3 Display Deviations...............................................................................................33
7.7.1. Absolute Zero Gas Deviation ................................................................................... 34
7.7.2. Relative Zero Gas Deviation .................................................................................... 34
7.7.3. Absolute Span Gas Deviation .................................................................................. 34
7.7.4. Relative Span Gas Deviation ................................................................................... 34
7.7.5. F4 Check Calibration................................................................................................ 35
7.7.6. F5 Reset Calibration Values .................................................................................... 35
7.7.7. F6 Range Select ...................................................................................................... 35
7.8. F5 Setup...................................................................................................................36
7.8.1. F1 Span Gas Concentration .................................................................................... 37
7.8.2. F2 Calibration Settings............................................................................................. 37
7.8.3. F1 Times .................................................................................................................. 38
7.8.4. F2 Measuring Deviations ......................................................................................... 38
7.8.5. F3 Deviations ........................................................................................................... 38
7.8.6. F4 Calibrations via Solenoids .................................................................................. 39
7.8.7. F5 Calibration via Probe........................................................................................... 39
7.8.8. F3 Range Limits ....................................................................................................... 39
7.8.9. F1 Range 1-4 (Change Upper Range Limits) .......................................................... 40

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7.8.10. F2 Change Auto Range Limits................................................................................. 40
7.8.11. Alarms ...................................................................................................................... 41
7.8.12. Password.................................................................................................................. 41
7.8.13. F1 Enter Password................................................................................................... 42
7.8.14. F2 Change Password............................................................................................... 42
7.8.15. F3 Reset Passwords ................................................................................................ 42
7.8.16. Linearization............................................................................................................. 43
7.8.17. F7 System Settings .................................................................................................. 43
7.8.18. F1 Real Time Clock.................................................................................................. 44
7.8.19. F2 Set autocalibration time ...................................................................................... 44
7.8.20. F3 Set Auto Cal Ranges .......................................................................................... 45
7.8.21. F4 Autocalibration on/off .......................................................................................... 45
7.8.22. Auto calibration ........................................................................................................ 45
7.8.23. F2 Displays TCP/IP Address.................................................................................... 46
7.8.24. F3 Displays Output Signal Assignments.................................................................. 46
7.8.25. F4 Displays Output Ranges ..................................................................................... 46
7.8.26. F5 Turns Status Line On or Off ................................................................................ 47
7.8.27. F8 Measure Settings ................................................................................................ 47
7.8.28. Set NO2 Mode Times ............................................................................................... 47
7.8.29. F2 Converter Efficiency............................................................................................ 48
7.8.30. Low Pass Filter Time Constant ................................................................................ 48
7.8.31. F4 Purge Time.......................................................................................................... 48
7.8.32. F10 Displays the Current Analyzer and Software Versions..................................... 49
7.9. F7 Remote / Manual Control ....................................................................................50
7.10. F8 Standby ...............................................................................................................50
8. Analyzer Components...................................................................................................51
8.1. Rear Panel................................................................................................................51
8.2. Main Connector (Standard 28 Pin Connector) .........................................................52
8.2.1. Main Connector (Standard 28 Pin Connector)......................................................... 52
8.2.2. Auxiliary Connector (Standard 28 Pin Connector)................................................... 52
8.2.3. Digital Outputs – RS-232 (Standard 9 Pin DIN Connector)..................................... 52
8.2.4. Digital Outputs – TCP/IP (8 Pin RJ-47 Connector).................................................. 53
8.3. Internal Component Locations..................................................................................54
8.4. Main Electronics Board (Potentiometers) .................................................................55
8.5. Main Electronic Board Potentiometers .....................................................................55
8.6. Main Electronics Board (Connectors).......................................................................56

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8.7. Main Electronic Board Connectors...........................................................................56
8.8. Reaction Chamber....................................................................................................57
8.9. Relay Board Connections.........................................................................................58
9. Operation........................................................................................................................59
9.1. Preparation for Operation.........................................................................................59
9.2. Operation..................................................................................................................59
9.3. Shut Down Procedure ..............................................................................................60
10. Functional Description..................................................................................................61
10.1. Operating Principle- NO/NOx....................................................................................61
10.1.1. Reaction Chamber ................................................................................................... 61
10.1.2. Flow System............................................................................................................. 61
10.1.3. Main Electronics Board ............................................................................................ 61
10.1.4. Relay Board.............................................................................................................. 61
10.2. Principle of Operation-Oxygen .................................................................................62
10.3. Cross sensitivity of gases.........................................................................................64
11. Reaction Chamber Servicing........................................................................................66
11.1. Disassembly Procedure............................................................................................66
11.2. Assembly Procedure ................................................................................................66
12. Troubleshooting ............................................................................................................67
12.1. Ozone Air/O2 Supply ................................................................................................67
12.2. Sample Supply .........................................................................................................67
12.3. NO/NOx Converter....................................................................................................67
13. AK Protocol Format.......................................................................................................68
13.1. Serial Interface and AK-Commands .........................................................................68
13.2. Interface Parameters................................................................................................68
13.3. General AK Requirements........................................................................................69
13.4. Scans .......................................................................................................................69
13.5. Control commands ...................................................................................................76
13.6. Settings ....................................................................................................................79
13.7. Abbreviations used...................................................................................................81
14. Appendix ........................................................................................................................82
14.1. MODEL 650 NOx/O2 Flow Diagrams ........................................................................82
14.2. Electrical Block Diagram...........................................................................................86

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Table of Figures
Figure 3-1 AC Power Switch, Connector, and Fuse ....................................................................................... 15
Figure 3-2 EMI Suppressor............................................................................................................................. 15
Figure 4-1 Measurement Screen .................................................................................................................... 18
Figure 4-2 Keyboard ....................................................................................................................................... 22
Figure 5-1 Main Menu on Power Up Screen .................................................................................................. 24
Figure 5-2 Main User Menu (Level 4) ............................................................................................................. 24
Figure 7-1 Main Menu Screen ........................................................................................................................ 26
Figure 7-2 Measurements Screen .................................................................................................................. 26
Figure 7-3 Measurement Screen .................................................................................................................... 27
Figure 7-4 First Diagnostics Screen................................................................................................................ 27
Figure 7-5 Second Diagnostics Screen .......................................................................................................... 27
Figure 7-6 Set to Auto-Range ......................................................................................................................... 28
Figure 7-7 Analyzer set to Range 3 ................................................................................................................ 28
Figure 7-8 Main Menu (User Level 4) ............................................................................................................. 28
Figure 7-9 Purge Screen................................................................................................................................. 28
Figure 7-10 Main User Menu (Level 4) ........................................................................................................... 29
Figure 7-11 Main User Menu (Level 4) ........................................................................................................... 29
Figure 7-12 Calibration Screen (Level 4)........................................................................................................ 29
Figure 7-13 Auto Calibration Screen............................................................................................................... 30
Figure 7-14 F2 Manual Calibration ................................................................................................................. 31
Figure 7-15 Manual Calibration Screen .......................................................................................................... 31
Figure 7-16 Manual zero gas calibration ........................................................................................................ 31
Figure 7-17 Manual Span gas calibration ....................................................................................................... 31
Figure 7-18 Range select................................................................................................................................ 32
Figure 7-19 Selected range 1 ......................................................................................................................... 32
Figure 7-20 Selected range 2 ......................................................................................................................... 32
Figure 7-21 Selected range 3 ......................................................................................................................... 32
Figure 7-22 Selected range 4 ......................................................................................................................... 32
Figure 7-23 Selected auto range .................................................................................................................... 32
Figure 7-24 F3 Display deviations .................................................................................................................. 33
Figure 7-25 Display deviations screen............................................................................................................ 33
Figure 7-26 Zero gas deviations ..................................................................................................................... 34
Figure 7-27 Zero gas deviations verifying....................................................................................................... 34
Figure 7-28 Span gas deviations .................................................................................................................... 34
Figure 7-29 Span gas deviations verifying...................................................................................................... 34
Figure 7-30 F4 Check calibration.................................................................................................................... 35

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Figure 7-31 Check Calibration ........................................................................................................................ 35
Figure 7-32 F5 Reset calibration values ......................................................................................................... 35
Figure 7-33 Reset calibration values .............................................................................................................. 35
Figure 7-34 Range Select ............................................................................................................................... 35
Figure 7-35 Range .......................................................................................................................................... 35
Figure 7-36 Main menu (User level 4) ............................................................................................................ 36
Figure 7-37 Setup menu 1 .............................................................................................................................. 36
Figure 7-38 Setup menu 2 .............................................................................................................................. 36
Figure 7-39 Change span gas settings ........................................................................................................... 37
Figure 7-40 Change Auto Calibration Settings .............................................................................................. 37
Figure 7-41 Setup-times.................................................................................................................................. 38
Figure 7-42 Measuring deviations................................................................................................................... 38
Figure 7-43 Absolute versus relative deviations ............................................................................................ 38
Figure 7-44 Calibrations via internal solenoid valves ..................................................................................... 39
Figure 7-45 Calibration via probe.................................................................................................................... 39
Figure 7-46 Change Range Limits .................................................................................................................. 39
Figure 7-47 Change Upper Range Limits ....................................................................................................... 40
Figure 7-48 Change Auto Range Limits.......................................................................................................... 40
Figure 7-49 Set Temperature Alarms ............................................................................................................. 41
Figure 7-50 Set Concentration, Pressure and Voltage Alarms....................................................................... 41
Figure 7-51 Enter / Change Password............................................................................................................ 41
Figure 7-52 Access Level Screen ................................................................................................................... 42
Figure 7-53 Passwords ................................................................................................................................... 42
Figure 7-54 Linearization Screen.................................................................................................................... 43
Figure 7-55 Coefficients Range Select ........................................................................................................... 43
Figure 7-56 Linearization Coefficients ............................................................................................................ 43
Figure 7-57 Range Raw Data with F2............................................................................................................. 43
Figure 7-58 system settings ............................................................................................................................ 43
Figure 7-59 System Setup Screen.................................................................................................................. 43
Figure 7-60 Clock and Timing Setup Screen.................................................................................................. 44
Figure 7-61 Set Clock Screen......................................................................................................................... 44
Figure 7-62 Select autocalibration time .......................................................................................................... 44
Figure 7-63 Set Autocalibration Cal Timing .................................................................................................... 44
Figure 7-64 Clock and Timing Setup Screen.................................................................................................. 45
Figure 7-65 F4 Toggles Auto Cal ON of OFF ................................................................................................. 45
Figure 7-66 Autocalibration Status.................................................................................................................. 45
Figure 7-67 TCP/IP Address ........................................................................................................................... 46

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Figure 7-68 Output Assignments .................................................................................................................... 46
Figure 7-69 Output Ranges ............................................................................................................................ 46
Figure 7-70 Status Line................................................................................................................................... 47
Figure 7-71 Menu Settings Screen ................................................................................................................. 47
Figure 7-72 Set NO2 Purge and Measure Time.............................................................................................. 47
Figure 7-73 Set Converter Efficiency .............................................................................................................. 48
Figure 7-74 Set Time Constant....................................................................................................................... 48
Figure 7-75 Set Purge Time............................................................................................................................ 48
Figure 7-76 Analyzer Information Version ...................................................................................................... 49
Figure 7-77 Software Version ......................................................................................................................... 49
Figure 7-78 Remote manual control ............................................................................................................... 50
Figure 7-79 Standby selection ........................................................................................................................ 50
Figure 7-80 Standby screen............................................................................................................................ 50
Figure 8-1 Major Internal Components ........................................................................................................... 54
Figure 8-2 Reaction Chamber Pre-Amplifier................................................................................................... 57
Figure 8-3 Relay Board Connections............................................................................................................. 58
Figure 10-1 Magnetic Susceptibility of gases ................................................................................................. 62
Figure 10-2 The Measuring cell in theory ....................................................................................................... 62
Figure 10-3 Principle of operation................................................................................................................... 63
Figure 14-1: Standard Analyzer ...................................................................................................................... 82
Figure 14-2: Standard Analyzer with Optional Zero/Span Solenoids ............................................................. 83
Figure 14-3: Standard Analyzer with Optional Sample Pump ........................................................................84
Figure 14-4: Standard Analyzer with Optional Sample Pump and Zero/Span Solenoids .............................. 85
Tables
Table 10-1 Cross Sensitivity of gases............................................................................................................. 65

Section 1 Model 650 Noxygen Analyzer
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1. Introduction
1.1. Overview
Congratulations and thank you! You have just purchased one of the most reliable gas
analyzers in the world. Before using the analyzer, please familiarize yourself with its operation
by reading this manual. If you have any questions, please do not hesitate to call California
Analytical Instruments for assistance. We want you to be a member of our thousands of
satisfied customers.
1.2. Unpacking Instructions
Open the shipping container and carefully remove the analyzer from the packing materials.
Inspect the instrument for any sign of damage. Remove the Top Cover retaining screws.
Visually check for loose parts or connectors that are not properly seated. Verify all circuit
boards and circuit board connections are secure. If all internal components look normal, re-
install the cover.
1.3. Reporting Damage
Should there be any apparent damage to either the inside or outside of the instrument due to
shipping or handling, immediately notify the shipper. The shipping container or packing
materials should be retained for inspection by the shipper.
1.4. Contact Information
California Analytical Instruments, Inc.
1312 West Grove Avenue
Orange, CA 92865
714 974-5560
Fax [phone]
Website: www.gasanalyzers.com

Section 1 Model 650 Noxygen Analyzer
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1.5. Warranty Certificate
Subject to the exceptions and upon the conditions stated below, California Analytical
Instruments (CAI) warrants that the products sold under this sales order shall be free from
defects in workmanship and materials for one year after delivery of the product to the original
Buyer by CAI and if any such product should prove to be defective within such one year
period, CAI agrees, at its option, either (i) to correct by repair or, at CAI’s election, by
replacement with equivalent product any such defective product, provided that investigation
and factory inspection discloses that such defect developed under normal and proper uses, or
(ii) to refund the purchase price. The exceptions and conditions mentioned above are as
follows:
a. components or accessories manufactured by CAI which by their nature are not intended to and will
not function for one year are warranted only to give reasonable service for a reasonable time; which
constitutes reasonable time and reasonable services shall be determined solely by CAl. A complete
list of such components and accessories is maintained at the factory;
b. CAI makes no warranty with respect to components or accessories not manufactured by it; in the
event of defect in any such component or accessory CAI will give reasonable assistance to Buyer in
obtaining from the respective manufacturer whatever adjustment is authorized by the
manufacturer’s warranty;
c. any product claimed to be defective must be returned to the factory tr ansportation charges prepaid
and CAI will return the repaired or replaced product freight collect;
d. if the product claimed to be defective requires on-site repair, such warranty labor will be provided at
no charge; however, transportation and living expenses will be charged to Buyer;
e. if the product is a consumable or the like, it is warranted only to conform to the quantity and content
and for the period (but not in exce ss of one year) stated on the label at the time of delivery or 90
days;
f. CAI may from time to time provide a special pr inted warranty with respect to a certain product, and
where applicable, such warranty shall be deemed incorporated herein by reference;
g. CAI shall be released from all obligations under all warranties, either expressed or implied, if any
product covered hereby is repaired or modified by persons other than its own authorized service
personnel unless such repair by others is made with the written consent of CAl.
IT IS EXPRESSLY AGREED THAT THE ABOVE WARRANTY SHALL BE IN LIEU OF ALL
WARRANTIES OF FITNESS AND OF THE WARRANTY OF MERCHANTABILITY AND THAT
CAI SHALL HAVE NO LIABILITY FOR SPECIAL OR CONSEQUENTIAL DAMAGES OF ANY
KIND OR FROM ANY CAUSE WHATSOEVER ARISING OUT OF THE MANUFACTURE
USE, SALE, HANDLING, REPAIR, MAINTENANCE OR REPLACEMENT OF ANY OF THE
PRODUCTS SOLD UNDER THIS SALES ORDER. SOME STATES DO NOT ALLOW THE
EXCLUSION OR LIMITATION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES, SO
THAT THE ABOVE LIMITATIONS OR EXCLUSIONS MAY NOT APPLY. THIS WARRANTY
GIVES YOU SPECIFIC LEGAL RIGHTS, AND YOU MAY ALSO HAVE OTHER RIGHTS,
WHICH VARY FROM STATE TO STATE.
Representations and warranties made by any person, including dealers and representatives of
CAI, which are inconsistent, or in conflict with the terms of this warranty, shall not be binding
upon CAI unless reduced to writing and approved by an expressly authorized officer of CAl.

Section 2 Model 650 Noxygen Analyzer
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2. Features
2.1. Description
The CAI Model 650 NO x/O2 Analyzer is a highly sensitive chemiluminescent (CLD) gas
analyzer and a reliable paramagnetic oxygen analyzer. It measures oxides of nitrogen gas and
dry basis oxygen concentrations in industrial and vehicle emission applications.
2.2. Features-General
The Model 650 NO x/O2 analyzer has a 3 by 5 inch liquid crystal display and a 20 key
data/operation input keyboard. The 16 bit microprocessor control board consists of the MSR-
Card with 16 digital inputs, 16 digital outputs, 16 analog inputs and 4 analog outputs. The
analyzer can be manually operated from the key pad or remotely via TCP/IP or RS-232C
communications. After turning on the analyzer, it needs at least 30 seconds for initialization.
During this time, the screen is illuminated. The analyzer is available with an optional internal
heated sample pump and internal zero and span solenoids.
IMPORTANT TIP: When the analyzer is powered up, it defaults to access level 1 (User).
To operate ALL parameters, check the access level. See Section 7.5.13.
The contents of this operator’s manual include:
9) Specifications
10) Installation Requirements, Mechanical & Electrical
11) Operation & Calibration Instructions
12) Reaction Chamber Description with Procedures for Disassembly of its
Component Parts
13) Function Explanation of the Electronic Circuitry
14) Electrical Block Diagram

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2.3. Model 650 CLD/Paramagnetic Specifications
DETECTORS Chemiluminescence (CLD) Photodiode /Paramagnetic (O2)
NO/NOx RANGES 0-1 to 3,000 ppm NO or NOX (Four user-definable ranges)
(Higher Ranges Available upon Request)
OXYGEN RANGE 0-25%
RESPONSE TIME T90 < 3 Seconds to 60 Seconds Adjustable
RESOLUTION – DETECTION LIMIT 0.03 ppM NO/NOX (Displays 5 significant digits)
REPEATABILITY Better than 0.5% of Full Scale
LINEARITY Better than 1.0% of Full Scale
NOISE Less than 0.5% of Full Scale
ZERO & SPAN DRIFT Less than 1% of Full Scale per 24 Hours
ZERO & SPAN ADJUSTMENT Via front panel, TCP/IP or RS-232
CO2EFFECT Less than 0.5% with 10% CO2
ADDITIONAL INTERFERENCE
DATA CO 1000 ppm – NA, HCN 28 ppm – N/A, SO2 500 ppm – N/A,
NH3 10 ppm – N/A, N2O 201 ppm – N/A
FLOW CONTROL Electronic Proportional Pressure Controller
SAMPLE FLOW RATE 3.0 LPM ± 1 LPM
CONVERTER Carbon Material @ 205°C > 98% to 100% Efficiency
OZONATOR Ultraviolet Lamp
AIR OR O2REQUIREMENTS Dry air less than 0.01 ppm NOX at 250 cc/Min. @ 25 psig
NO/NOX Control Manual/Remote/Auto Cycle (Remote NOX mode by dry contact
closure)
OUTPUTS AVAILABLE Scalable to 0-10 V or 4-20 mADC, RS232 and TCP/IP
DISCRETE ALARMS
General Fault/ TTL Logic (Ground True)
Calibration Failure/ TTL Logic (Ground True)
High Concentration (2 each)/ TTL Logic (Ground True)
DIGITAL DIAGNOSTICS
• Converter Temperatures
• Cell Temperatures
• Photodiode Temperatures
• Air Pressures, Flow Rate and
EPC Control Voltage
• Sample Pressure, Flow Rate and
EPC Control Voltage
KEYPAD DISPLAYS
• Factory Settings
• TCP/IP Address
• Scalable Analog Output
Voltages
• Passwords (4)Full
• Scale Range Select
• Auto Cal Times
SPECIAL FEATURES
• Calculated NO2 values from empirically derived NOx converter
efficiencies
• Auto Ranging
• Auto Calibration (adjustable through internal clock)
DISPLAY Back lit LCD
SAMPLE TEMPERATURE 50°C Non-condensing
CHAMBER TEMPERATURE 66°C
AMBIENT TEMPERATURE 5 to 40°C
AMBIENT HUMIDITY Less than 90% RH Non-condensing
WARM-UP TIME 1 Hour
FITTINGS 1/4 Inch Tube
POWER REQUIREMENTS 115/230 (±10%) VAC; 50/60 Hz; Less than 3 amps
DIMENSIONS 5¼ H × 19 W × 23 D (Inches)
WEIGHT 48 Pounds
SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE

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3. Installation
3.1. General
The instrument is designed for industrial applications. These installation instructions are for a
typical site. Any questions regarding specific installation situations should be directed to
Technical Service of California Analytical Instruments, Inc.
3.2. Site and Mounting
NOTE: The following precautions must be carefully observed:
1) Select a site free from direct sunlight, radiation from a high temperature surface,
or abrupt temperature variations.
2) This analyzer is not suitable for installation outdoors.
3) Select a site where the air is clean. Avoid exposing the instrument to corrosive or
combustible gases.
4) The instrument must not be subject to severe vibration. If severe vibration is
present, use isolation mounts.
5) The instrument is designed for rack-mounting. Optional rack mount slides are
available.
6) Do not install near equipment emitting electromagnetic interference (EMI).
NOTE: A rear supporting brace or equivalent is required if the optional rack mount
slides were not purchased.

Section 3 Model 650 Noxygen Analyzer
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3.3. Electrical
All wiring is connected at the rear of the instrument. The AC power is connected to the
power/fuse/switch as shown below:
0
I
Figure 3-1 AC Power Switch, Connector, and Fuse
NOTE: A defective ground may affect the operation of the instrument. The output
voltages are connected per Table 8.1.1. Shielded wiring is recommended for output
signals.
CAUTION: Electromagnetic interference (EMI) may affect the operation of the
instrument. Do not install the instrument in the vicinity of electrical noise (such as high
frequency furnaces, electric welding machines, etc.). If the instrument must be installed
at such locations, a separate power line must be used. Noise from a relay or solenoid
valve should be controlled by the use of an EMI suppressor (RC circuit) across the
power wiring close to the noise-generating component.
EMI
Suppressor
EMI
Source
A
nalyzer
Figure 3-2 EMI Suppressor.
NOTE: The EMI Suppressor must be located close to the noise source.

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3.4. Analog Output Connections (Appendix)
See Appendix for connector pinouts located on the analyzer rear panel. Remote range
identification and range selection are obtained via the rear panel connections. When a range
is selected, the corresponding control line is pulled low to zero VDC. Ranges not selected will
remain at approximately 5 VDC. When remote range control is selected on the front panel
switch, a contact closure is provided at the rear panel connector. Remote range selection is
made by connection of the control line for the desired range to the analyzers zero VDC line
provided in the connector. Five VDC is also provided. Remote NOx On is selected by
connection to the common line. This contact closure turns on the NOx function by flowing the
sample first through the NO/NOx converter.
3.5. Gases
1) Air or O2 (Ozone Air, < 1 ppm C) in pressurized cylinder.
2) Nitrogen or (zero air) in pressurized cylinder.
3) Standard span gas(es) near full scale concentration with a nitrogen balance, in a
pressurized, certified cylinder.
3.6. Gas Handling Equipment
1) Pressure regulators for zero gas (Air or N2), ozone supply (air or O2) and span
gas cylinders.
2) Corrosive resistant gas tubing.
NOTE: High levels of NH3(greater than 10 PPM NH3) may reduce the NO2to NO
Converter's conversion efficiency to a level that is unacceptable. It is therefore
recommended that the customer purchase a commercially available NH3scrubber and
install it in the path of the sample gas prior to its introduction into the analyzer.
3.7. Gas Connections
The tubing from the sampling system to the gas analyzer should be made from corrosive-
resistant material such as Teflon or stainless steel. Even when the gases being sampled are
corrosive themselves, rubber or soft vinyl tubing should not be used since readings may be
inaccurate due to gas absorption into the piping material. To obtain fast response, the tube
should be as short as possible. Optimum tube internal diameter is 0.16 inch (4 mm).
Couplings to the instrument are ¼ Inch tube.
NOTE: Be sure tubing and joints are clean. Dust entering the instrument may cause it to
malfunction.

Section 3 Model 650 Noxygen Analyzer
California Analytical Model 650 Noxygen Operators Manual
650 NOXO2_v9.0.doc Page 17 of 86
3.8. Sampling Requirements
3.8.1. Filtration
Dust must be eliminated completely. Use filters as necessary. The final filter must be
capable of removing particles larger than 4 microns.
3.8.2. Condensation
Dew point of the sample gases must be lower than the instrument temperature to prevent
accidental condensation within the instrument. Bypass the sample through a dehumidifier
to reduce the dew point to about 2 to 4°C or less. If the sample contains an acid mist, use
an acid mist filter, cooler or similar device to remove all traces of the mist.
3.8.3. Presence of Corrosive Gases
Useful service life of the instrument will be shortened if high concentrations of corrosive
gases such as Cl2, SO2, F2, HCl, etc., are present in the sampled gas.
3.8.4. Gas Temperature
When measuring high temperature gases, take care that the maximum rating of the
instrument 104 ºF (50 ºC) is not exceeded.
3.8.5. Pressure and Flow Rates
The air or oxygen supply entering the instrument is controlled by an electronically
controlled proportional flow (EPC) controller. The regulator is factory adjusted for optimum
analyzer performance. The ozone supply (Air or O 2) air cylinder pressure should be set at
approximately 25 PSIG. The sample entering the instrument is controlled by a factory set
precision electronically controlled proportional flow (EPC) controller. The EPC is factory
set for optimum analyzer performance as indicated by the sample pressure. If the analyzer
does not contain the optional internal sample pump, the sample gas entering the
instrument should be at a pressure between 10 and 25 PSIG with a flow capacity at a
minimum of 3 liters/min. If the analyzer contains the optional sample pump, do not apply a
pressurized sample. The optional pump is capable of drawing a sample through a ¼ inch
heated sample line of approximately 75 feet. The calibration/span gas cylinder pressures
should be set at 25 PSIG for delivery into the optional zero and span inlets located on the
rear panel.
NOTE: If the analyzer contains an optional internal sample pump, the introduction of a
pressurized sample gas in excess of 1.5 PSIG will damage the pump.
3.8.6. Sample Gas Bypass Outlet (Vent)
A sample gas bypass outlet connector is located on the rear panel (¼ Inch Tube).
Pressure at this outlet should be kept at atmospheric level. ANY backpressure will cause
an error in reading. The vent outlet is located on the rear panel and may contain high
levels of ozone which should be vented away from the instrument.

Section 4 Model 650 Noxygen Analyzer
California Analytical Model 650 Noxygen Operators Manual
650 NOXO2_v9.0.doc Page 18 of 86
4. Basic Operation
The operation of the digital microprocessor conforms to the guidelines of the AK committee,
originally developed in the German automotive industry. Via the serial port of the MSR-Card, the
analyzer can be remote-controlled by a master computer. The serial communication fully
corresponds to the specifications of the AK protocol. TCP/IP communication is also available.
4.1. Display
The analyzer's LCD display includes 16 lines with 30 characters each. The display also has
background lighting that can be switched on and off via the Display key on the keyboard. The
following example shows the measurement screen which is formatted into 4 information areas.
Figure 4-1 Measurement Screen
THE TOP INFORMATION AREA CONTAINS:
The AK Protocol Information. This capability is for advanced uses and may be toggled on and
off in the setup screen, F5. Next to the symbol for the active operating mode, the device
status is indicated. The status field is also displayed on all other screens.
SARE Autorange enabled
SMGA Measuring gas is flowing
SMAN Device is in manual operation status
SWET What?
The level of Password Entry is shown on the right with 1 to 4 horizontal lines.
THE LARGE INFORMATION AREA CONTAINS:
The date portion of the screen.
THE THIRD INFORMATION AREA CONTAINS:
The help information for the parameter selected, ranges, etc.
THE LOWER INFORMATION AREA CONTAINS:
The time and date and any error condition.
The symbol in the bottom right corner indicate s the keyboard mode. In the example shown,
the keyboard is in the function key mode. For input fields, the mode is usually switched to
numerical input. Then, an N appears in the lower right of the screen. This symbol is displayed
on all screens.

Section 4 Model 650 Noxygen Analyzer
California Analytical Model 650 Noxygen Operators Manual
650 NOXO2_v9.0.doc Page 19 of 86
4.2. Menu Tree
Main Menu
(All access)
F1 Measurement
F2 Purge Analyzer
F3 Diagnostics
F4 Calibration
F5 Setup
F6 Remote/Manual
F7 Stand by
Measurement
F1 NO/NO
x
/O
2
F2 Dual Mode
F3 Diagnostics
Up/down range
Purge Analyzer
Diagnostics I/
Temperatures:
yCell
yDiode
yOven Pump
yO2
Calibration
F1 Auto calibration
F2 Manual calibration
F3 Display deviations
F4 Check calibration
F5 Reset calibration values
F6 Range select
Setup
F1 Span gas concentrations
F2 Calibrations settings
F3 Range limits
F4 Alarms
F5 Password
F6 Linearization
F7 System settings
F8 Measure settings
F10 Displays version
Remote/Manual
Stand By
F1 Toggles between NO and NO
x
F2 Toggles on NO and NO
2
F3 Displays Diagnostics Screen
Sets analyzer in purge mode
F1
F2
F3
F4
F5
F6
F7
F1 Starts auto calibration on range in use
F2 Zero/span calibration/change range
F3 Display deviations
F4 Check calibration
F5 Reset calibration values to factory default
F6 Range change
F1 Sets calibration gas values
F2 Sets auto calibration times
F3 Sets upper range limits
F4 Sets range concentration limits
F5 Set user password
F6 Range change
F7 Displays systems settings
F9 Displays measure settings
F10 Displays version/Model/(S/N)/Air press/
Sample press/Software version
Manual (local) control
Toggles pump
Diagnostics III
EPC Coil (V) Sample/Ozone
Pressures (PSIG) Sample/Air
Gas Flow (mL/Min) Sample/Air
,

Section 4 Model 650 Noxygen Analyzer
California Analytical Model 650 Noxygen Operators Manual
650 NOXO2_v9.0.doc Page 20 of 86
Calibration
F1 Auto calibration
F2 Manual calibration
F3 Display deviations
F4 Check calibration
F5 Reset calibration values
F6 Range select
Auto calibration
Manual Calibration
F1 Flow zero gas
F2 Flow span gas
F3 Range select
Display Deviations
F1 Zero gas deviations
F2 Span gas deviations
F3 Zero gas deviations/verify
F4 Span gas deviations verify
Check Calibration
Reset calibration values
Range select
F1
F2
F3
F4
F5
F6
Range select
F1 Range 1
F2 Range 2
F3 Range 3
F4 Range 4
F5 Auto range
F3
Main Menu
(All access)
F1 Measurement
F2 Purge Analyzer
F3 Diagnostics
F4 Calibration
F5 Setup
F6 Remote/Manual
F7 Stand by
F4