2B Technologies OEM-106-H User manual

Model 106-H Ozone Monitor Manual Rev. F-1
i
Ozone Monitor
2BTechnologies
OPERATION MANUAL
Models 106-H and OEM-106-H
© Copyright 2018, 2B Technologies
All rights reserved.
Technical Support:
https://twobtech.com/tech-support.html
[email protected]
[phone]

Model 106-H Ozone Monitor Manual Rev. F-1
ii
Contents
IDENTIFICATION RECORDS iv
PRINTING HISTORY v
WARRANTY STATEMENT vi
WARNINGS viii
1. OZONE MONITOR INTRODUCTION 1
1.1 Theory of Operation................................................................................................................. 1
1.2 Calibration and Zeroing Overview........................................................................................... 2
2. SPECIFICATIONS: Model 106-H and Model OEM-106-H 3
3. OPERATION 5
3.1 Shipping Box Contents............................................................................................................ 5
3.2 Operation of the Ozone Monitor.............................................................................................. 5
3.2.1 Powering the Instrument ............................................................................................ 5
3.2.2 Initial Startup .............................................................................................................. 5
3.2.3 Connections to the Instrument................................................................................... 6
3.2.4 Operating Parameters................................................................................................ 6
3.2.5 Checking the Zero Offset........................................................................................... 6
3.2.6 Summary of Operating Recommendations................................................................ 6
3.3 Menu........................................................................................................................................ 7
3.4 Accessing the Main, Zero, and Admin Menus......................................................................... 8
3.5 Making Measurements without Averaging or Logging ............................................................ 8
3.6 Data Averaging and Data Logging Using the Menu................................................................ 9
3.6.1 To Average the Data without Logging........................................................................ 9
3.6.2 To Log Data.............................................................................................................. 10
3.7 To Stop Logging Data............................................................................................................11
3.8 To Set the Time and Date .....................................................................................................11
3.9 To Change the Ozone, Temperature, and Pressure Measurement Units ............................ 12
3.10 To Auto-Zero the Instrument .................................................................................................12
3.11 To Change the Calibration Parameters.................................................................................13
3.12 Collecting Data over the USB or Serial Port in Real Time.................................................... 14
3.12.1 Data Acquisition Software........................................................................................14
3.12.2 Determine the Connection Port and Baud Rate Settings ........................................14
3.12.3 Data Output..............................................................................................................15
3.13 To Change the Baud Rate.....................................................................................................16
3.14 To Transmit Logged Data to a Computer Using the USB or Serial Port............................... 16
3.15 Accessing the Serial Menu and the USB Menu ....................................................................16
3.16 Collecting Data from the Analog Output................................................................................ 18
3.17 To Read the Number of Hours of Ozone Monitor Use..........................................................18
3.18 Using and Setting the Relay Limits ....................................................................................... 18
3.19 Lamp Test.............................................................................................................................. 19
3.20 LED Indicator Lights .............................................................................................................. 20
4. MAINTENANCE/TROUBLESHOOTING 21

Model 106-H Ozone Monitor Manual Rev. F-1
iii
5. CALIBRATION 24
5.1 Equipment Required..............................................................................................................24
5.2 Calibration Procedure............................................................................................................ 24
5.2.1 Instrument Preparation............................................................................................. 24
5.2.2 Measurement of Zero Gas....................................................................................... 25
5.2.3 Measurement of Ozone Standards..........................................................................25
5.2.4 Calibration Curve ..................................................................................................... 25
6. PERIODIC ZERO AND SPAN CHECKS 26
7. LABELED INSTRUMENT PHOTOS 27
8. REPLACEMENT PARTS 29
9. SERVICE LOG 30
Appendix A: Using the 2B Technologies Display and Graphing Software 32
Appendix B: Installation and Use of the USB Connection (for older versions of the Model 106
and/or Windows) 36

Model 106-H Ozone Monitor Manual Rev. F-1
iv
IDENTIFICATION RECORDS
Record the following information for future reference:
Unit serial number: ______________________________________
Warranty start date: _______________________________________
(date of receipt)

Model 106-H Ozone Monitor Manual Rev. F-1
v
PRINTING HISTORY
This manual covers the Model 106-H Ozone Monitor used for measurement of High
concentration ozone generators over a wide dynamic range extending from 0-20 wt%
(0-14 vol%). It also covers the Model 106-OEM-H Ozone Monitor, which does not
have the enclosure and can be used for Original Equipment Manufacturer (OEM)
applications. New editions of this manual are complete revisions that reflect updates
to the instrument itself, as well as clarifications, additions, and other modifications of
the text.
Revision A......................................................................................................April 2010
Revision B............................................................................................September 2010
Revision C.............................................................................................December 2011
Revision D-1 (serial no. 932H and above).......................................................July 2017
Revision D-2................................................................................................ March 2018
In Section 2, clarified the flow information in the Specifications table. In Section 3.18, added
reference to our new Technical Note 45 about using the relays.
Revision E-1 (serial no. 1118H and above).....................................................July 2018
New pressure sensor and optical bench. Changes to associated specifications (power, weight,
drift) and photos.
Revision F-1 (serial no. 1129H and above)...........................................November 2018
Spec for low voltage limit of the reference photodiode changed from 0.6 V to 0.1 V; update to Sections
3.19, 3.20, and 4 regarding photodiode voltages and LED indicator light functionality; correction to
serial line output voltage order in Section 3.12.3; updates of all web links; other minor edits.
TRADEMARKS & PATENTS
2B Technologies, 2B Tech, 2Band Ozone Monitorare trademarks of 2B
Technologies.
CONFIDENTIALITY
The information contained in this manual may be confidential and proprietary and is the
property of 2B Technologies. Information disclosed herein shall not be used to
manufacture, construct, or otherwise reproduce the goods disclosed herein. The
information disclosed herein shall not be disclosed to others or made public in any
manner without the expressed written consent of 2B Technologies.
© Copyright 2018, 2B Technologies.
All rights reserved.

Model 106-H Ozone Monitor Manual Rev. F-1
vi
WARRANTY STATEMENT
2B Technologies, warrants its products against defects in materials and workmanship.
2B Technologies will, at its option, repair or replace products which prove to be
defective. The warranty set forth is exclusive and no other warranty, whether written
or oral, is expressed or implied. 2B Technologies specifically disclaims the implied
warranties of merchantability and fitness for a particular purpose.
Warranty Periods
The warranty period is one (1) year from date of receipt by the purchaser, but in no
event more than thirteen (13) months from original invoice date from 2B Technologies.
Warranty Service
Warranty Service is provided to customers via web ticket, email and phone support,
Monday - Friday, from 9:00 a.m. to 5:00 p.m., Mountain Time USA. The preferred
method of contacting us is through our web ticketing software at:
https://twobtech.com/tech-support.html
This way all technical staff at 2B Tech will be alerted of your problem and be able to
respond. When you receive an email reply, please click on the Ticket link provided to
continue to communicate with us directly over the internet. The web ticket approach
to customer service allows us to better track your problem and be certain that you get
a timely response. We at 2B Tech pride ourselves on the excellent customer service
we provide.
You may also contact us by email at [email protected] or by phone at
[phone]. In either case, a web ticket will be created, and future
communications with you will be through though that ticket.
Initial support involves trouble-shooting and determination of parts to be shipped from
2B Technologies to the customer in order to return the product to operation within
stated specifications. If such support is not efficient and effective, the product may be
returned to 2B Technologies for repair or replacement. Prior to returning the product,
a Repair Authorization Number (RA) must be obtained from the 2B Technologies
Service Department. We will provide you with a simple Repair Authorization Form to
fill out to return with the instrument.
Shipping
2B Technologies will pay freight charges for replacement or repaired products shipped
to the customer site. Customers shall pay freight charges for all products returning to
2B Technologies.

Model 106-H Ozone Monitor Manual Rev. F-1
vii
Conditions
The foregoing warranty shall not apply to defects resulting from improper or
inadequate maintenance, adjustment, calibration or operation by customer.
Maintenance, adjustment, calibration or operation must be performed in accordance
with instructions stated in this manual. Usage of maintenance materials purchased
from suppliers other than 2B Technologies will void this warranty.
Limitation of Remedies and Liability
The remedies provided herein are the Customer's sole and exclusive remedies. In no
event shall 2B Technologies be liable for direct, indirect, special, incidental or
consequential damages (including loss of profits) whether based on contract, tort or
any other legal theory. The Ozone Monitor manual is believed to be accurate at the
time of publication and no responsibility is taken for any errors that may be present. In
no event shall 2B Technologies be liable for incidental or consequential damages in
connection with or arising from the use of the Ozone Monitor manual and its
accompanying related materials. Warranty is valid only for the country designated on
the 2B Technologies quote or invoice.

Model 106-H Ozone Monitor Manual Rev. F-1
viii
WARNINGS
ENGLISH
WARNING:
Any operation requiring access to the inside of the equipment, could result in
injury. To avoid potentially dangerous shock, disconnect from power supply before
opening the equipment.
WARNING:
This symbol, on the instrument indicates that the user should refer to the
manual for operating instructions.
WARNING:
If this instrument is used in a manner not specified by 2B Technologies, USA, the
protection provided by the instrument may be impaired.
ESPAÑOL
ATENCION:
Cualquier operación que requiera acceso al interior del equipo, puede
causar una lesión. Para evitar peligros potenciales, desconectarlo de la
alimentación a red antes de abrir el equipo.
ATENCION:
Este símbolo, en el instrumento indica que el usuario debería referirse
al manual para instrucciones de funcionamiento.
ATENCION:
Si este instrumento se usa de una forma no especificada por 2B
Technologies, USA, puede desactivarse la protección suministrada por el
instrumento.
FRANÇAIS
ATTENTION:
Chaque opération à l’intérieur de l’appareil, peut causer du préjudice. Afin d’éviter
un shock qui pourrait être dangereux, disconnectez l’appareil du réseau avant de
l’ouvrir.
ATTENTION:
Le symbol, indique que l’utilisateur doit consulter le manuel d’instructions.
ATTENTION:
Si l’instrument n’est pas utilisé suivant les instructions de 2B Technologies, USA,
les dispositions de sécurité de l’appareil ne sont plus valables.
DEUTSCH
WARNHINWEIS:
Vor dem Öffnen des Gerätes Netzstecker ziehen!
WARNHINWEIS:
Dieses, auf dem Gerät weist darauf hin, dab der Anwender zuerst das
entsprechende Kapitel in der Bedienungsanleitung lesen sollte.
WARNHINWEIS:
Wenn das Gerät nicht wie durch die Firma 2B Technologies, USA,
vorgeschrieben und im Handbuch beschrieben betrieben wird, können die
im Gerät eingebauten Schutzvorrichtungen beeinträchtigt werden.
ITALIANO
ATTENZIONE:
Qualsiasi intervento debba essere effettuato sullo strumento può essere
potenzialmente pericoloso a causa della corrente elettrica.
Il cavo di alimentazione deve essere staccato dallo strumento prima della sua
apertura.
ATTENZIONE:
Il simbolo, sullo strumento avverte l’utilizzatore di consultare il Manuale di
Istruzioni alla sezione specifica.
ATTENZIONE:
Se questo strumento viene utilizzato in maniera non conforme alle specifiche di 2B
Technologies, USA, le protezioni di cui esso è dotato potrebbero essere alterate.
DUTCH
OPGELET:
Iedere handeling binnenin het toestel kan beschadiging veroorzaken. Om
iedere mogelijk gevaarlijke shock te vermijden moet de aansluiting met het
net verbroken worden, vóór het openen van het toestel.
OPGELET:
Het symbool, geeft aan dat de gebruiker de instructies in de
handleiding moet raadplegen.
OPGELET:
Indien het toestel niet gebruikt wordt volgens de richtlijnen van 2B
Technologies, USA gelden de veiligheidsvoorzieningen niet meer.
CHINESE
警告：
任何需要接触设备内部的操作均可能造成人身伤害。为避免可
能的触电危险，请在打开设备前切断电源。
警告：
这个符号 在仪器上表示用户应参考说明书上的操作指南。
警告:
如果仪器没有按照美国2B科技公司指定方式操作，仪器的保护
性能会减弱。
JAPANESE
警告：
機器の内部で操作する時、怪我できます。危険な衝撃を回避す
るために、機器を開ける前に、電源を切断してください。
警告：
機器でこの記号 を見れば、マニュアルを読んでください。
警告：
この機器は2B テクノロジー会社、
USAの指定でしなければ、機器の保護が損なえます。

Model 106-H Ozone Monitor Manual Rev. F-1
1
1. OZONE MONITOR INTRODUCTION
The 2B Technologies Model 106-H Ozone Monitor is designed to enable accurate
measurements of ozone over a wide dynamic range extending from 0.01 percent by
weight in oxygen (wt% O2) to an upper limit of 20 wt% O2based on the well-
established technique of absorption of ultraviolet light at 254 nm. The Ozone Monitor
is lightweight (4.8 lb, 2.2 kg) and has low power consumption (~3 watt) relative to
conventional instruments and is well suited for applications such as:
•Monitoring of ozone generator output
•Monitoring of residual ozone after a cleaning or oxidation process
•Control of industrial ozone processes
The Model 106-H is a flow-through instrument with no air pump. The plumbing is
designed for high pressure (up to 50 psig) and partial vacuum.
1.1 Theory of Operation
Absorption of UV light has long been used for measurements of ozone with high
precision and accuracy. The ozone molecule has an absorption maximum at 254 nm,
coincident with the principal emission wavelength of a low-pressure mercury lamp.
Fortunately, few molecules found in ozone process streams absorb at this
wavelength.
Figure 1.1 is a schematic diagram of the Ozone Monitor. Ozone is measured based
on the attenuation of light passing through a 0.1 cm absorption cell fitted with sapphire
windows. A low-pressure mercury lamp is located on one side of the absorption cell,
and a sample photodiode is located on the opposite side of the absorption cell. The
photodiode has a built-in interference filter centered on 254 nm, the principal
wavelength of light emitted by the mercury lamp. A beamsplitter and reference
photodiode are used to monitor the lamp intensity without the sample in the beam
path. The intensity of light is measured from the reference photodiode (Io) and from
the sample photodiode (I).
Ozone concentration is calculated from the measurements of Ioand Iaccording to the
Beer-Lambert Law:






=I
I
l
Co
Oln
1
3

where lis the path length (0.1 cm) and  is the absorption cross section for ozone at
254 nm (1.15 x 10-17 cm2molecule-1 or 308 atm-1 cm-1), which is known with an
accuracy of approximately 1%. The 2B Technologies instrument uses the same
absorption cross section (extinction coefficient) as used in other commercial
instruments.

Model 106-H Ozone Monitor Manual Rev. F-1
2
When there is no ozone in the cell, a difference in light intensity at the reference and
sample photodiodes can be expected, and it will cause a zero offset in the readings.
This light intensity difference is inherent in the instrument due to the different
properties of the two photodiodes, drift in the angle of the beamsplitter, contamination
in the cell and thermal drift in any of the optical components. The zero drift has been
determined to be less than or equal to 2% of full scale per month, non-cumulative, and
can easily be corrected for by using the zero function described below. The zero drift
does not affect the slope calibration factor in any way, and the instrument does not
need to be recalibrated after performing the zeroing function.
The pressure and temperature within the absorption cell are measured so that the
ozone concentration can be expressed as a mixing ratio in percent by volume (vol%).
The fraction of the sample that is ozone can then be calculated and used to determine
the ozone concentration in percent by weight in either air (wt% air) or oxygen (wt%
O2), in g/m3, or in Ng/m3. The instrument displays and records the cell temperature
and pressure in addition to the ozone concentration. The cell pressure is displayed
and logged in units of mbar, torr, or psia and the cell temperature in units of either °C,
°F, or K.
1.2 Calibration and Zeroing Overview
In principle, the measurement of ozone by UV absorption requires only a zero
calibration to account for the different light intensities at the reference and sample
photodiodes. However, non-linearity of the photodiode response and electronics can
result in a small measurement error. Therefore, each instrument is compared with a
Sample
Photodiode
Hg Lamp
Absorption
Cell
Pressure Relief
and Scrubber
Temperature
Sensor
Sample Inlet
Reference
Photodiode
Beamsplitter
Pressure Sensor
Sample Outlet
Figure 1.1. Schematic Diagram of the Model 106-H Ozone Monitor.

Model 106-H Ozone Monitor Manual Rev. F-1
3
reference ozone monitor calibrated to the International Ozone Association (IOA)
buffered KI method. These results are used to calibrate the Ozone Monitor with
respect to a slope (gain). The correction for slope is recorded in the instrument Birth
Certificate. The slope parameter is entered into the microprocessor prior to shipment.
The user may change the slope parameter from the front panel if desired. It is
recommended that the instrument be recalibrated at least once every year and
preferably more frequently. The user may perform the calibration (see Section 5), or
return the instrument to 2B Technologies for calibration servicing.
The zero may drift due to temperature change or chemical contamination of the
absorption cell. As discussed below (Section 3.2.5, Section 3.10, Section 6), an
accurate zero correction can be measured from time to time using zero gas and the
auto-correct function of the instrument.
2. SPECIFICATIONS: Model 106-H and Model OEM-106-H
Measurement Principle
UV Absorption at 254 nm, single beam
Measurement Interval
2 s
Linear Dynamic Range
0-20 wt%
Resolution
0.01 wt%
Precision (1σ for 10-s
average; aka rms noise)
Greater of 0.01 wt% O2or 2% of reading
Limit of Detection (10-s
average, 2σ)
0.02 wt%
Accuracy
Greater of 0.01 wt% O2or 2% of reading
Baseline Drift
< 0.02 wt%/day, < 0.05 wt%/month
Sensitivity Drift
< 1%/day, < 3%/year
Calibration
Iodide titration; annual calibration recommended
Measurement Time and
Frequency
2 s, 0.5 Hz
Data Averaging Options
10 s, 1 min, 5 min, 1 hr
Response Time, 100% of
Step Change
For 2-s output: 4 s, 2 data points
For 10-s output: 20 s, 2 data points
Flow Rate
Nominal: Up to 20 L/min; Maximum: 55 L/min
0.5 L/min required for 4-s response time at 2-s output
Data Logger Capacity
32,736 lines (10 s avg. = 3.7 days; 5 min avg = 113
days)

Model 106-H Ozone Monitor Manual Rev. F-1
4
Data Transfer Baud Rates
2400, 4800, 19200
Ozone Units
g m-3, Ng m-3, vol%, wt% air, wt% O2
Temperature Units
°C, °F, K
Pressure Units
mbar, torr, psi
T and P Corrected
Yes
Operating Temperature
Range
0 to 50°C
Operating Altitude Range
0 to 5 km
Operating Pressure Limit
50 psig
Power Requirements
100-240 VAC, 50/60 Hz
11-28 VDC, nominally 250 mA at 12 VDC, 3 watt
Digital Data Outputs
USB, RS232, LCD display
Analog Data Outputs
0-2.5 V Analog, 4-20 mA; user-scalable in menu
Relays with 2 Setpoints
Two available:
Relay 1 responds based on user’s ozone set points.
Relay 2 responds based on user’s ozone set points
OR responds based on diagnostics (T, P, flow, lamp
voltage)
Bluetooth Option Available
Yes
Size
Standard: 3.6 x 7.9 x 9.4 inches (9 x 20 x 24 cm)
OEM: 2.5 x 7 x 9 in (6.4 x 17.8 x 22.9 cm)
Weight
Standard: 4.8 lb (2.2 kg)
OEM: 3.3 lb (1.5 kg)
Options
Battery, Particle Filter, Bluetooth

Model 106-H Ozone Monitor Manual Rev. F-1
5
3. OPERATION
Please read all the following information before attempting to install the Ozone
Monitor. For assistance, please call 2B Technologies at [phone].
NOTE:
Save the shipping carton and packing materials that came with the
Ozone Monitor. If the Ozone Monitor must be returned to the factory,
pack it in the original carton. Any repairs as a result of damage
incurred during shipping will be charged.
3.1 Shipping Box Contents
Open the shipping box and verify that it contains all of the items on the shipping list. If
anything is missing or obviously damaged, contact 2B Technologies immediately.
3.2 Operation of the Ozone Monitor
3.2.1 Powering the Instrument
To operate the Ozone Monitor, connect it to an external power source and power the
instrument on using the power switch. The instrument requires a 12 V DC source
which can be supplied by: 1) the 100-240 V AC power adapter, 2) a cigarette lighter
adapter plugged into a 12 V DC source such as found in an automobile or many light
aircraft, or 3) a 12 V battery. The source can be in the range 11-28 V DC without any
detrimental effects on the measurement. When using a battery, be certain to attach
the positi ve (red) and negative (black) wires correctly. Batteries and battery chargers
are available from 2B Technologies. A circuit breaker and diode are installed on the
circuit board in case of an electrical short or incorrect battery attachment. If activated,
the breaker will reset itself after a few minutes.
Lead-acid batteries are available from numerous manufacturers in a wide range of
sizes and amp-hour ratings. The larger of these, such as those for automobiles or
boats, will supply power for up to several weeks. Battery packs in the correct voltage
range may be constructed from nickel-cadmium (rechargeable) or lithium (lightweight
but not rechargeable) batteries for operation for a few hours. Battery options available
through 2B Technologies may be found on our webpage: https://www.twobtech.com.
3.2.2 Initial Startup
Once turned on, the instrument will display the version number of the software
installed on the microprocessor. After a few seconds, the instrument will start
displaying readings for ozone. The first several readings (requiring about two
minutes) will be spurious, with large positive and negative swings due to the rapid
warmup of the lamp and electronics. Also, ozone readings may be inaccurate during
the first 20-30 minutes required for the lamp, photodiodes, and internal temperature of
the absorption cell to stabilize.

Model 106-H Ozone Monitor Manual Rev. F-1
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3.2.3 Connections to the Instrument
Inlet tubing may be attached to the ¼ inch stainless steel Swagelok fitting on the back
of the instrument. For the high concentrations of ozone typically used with the Model
106-H Ozone Monitor, stainless steel tubing is recommended.
3.2.4 Operating Parameters
The Ozone Monitor has an internal pressure relief device that protects the instrument
from excessive pressure. The device vents through an ozone scrubber when the inlet
pressure exceeds 50 psi and is not meant to be used in normal operation. Although
the ozone scrubber is made with an ozone destroying catalyst that has very high
ozone capacity, it may not scrub 100% of the ozone if the flow exceeds several liters
per minute. Operators of the instrument should not rely on the pressure relief device
as a pressure regulating device or expose the instrument to pressures above 50 psi.
Although the instrument compensates for temperature drift, if strong temperature
fluctuations are expected, the instrument should be placed in a thermally insulated box.
3.2.5 Checking the Zero Offset
Check the zero measurement occasionally, or if the instrument has not been used
recently. The zero offset of the instrument can be measured by first purging the
instrument with zero gas at a minimum flow rate of 0.2 L/min for at least 2 minutes.
For an accurate measurement, the instrument must have been turned on long enough
for the internal temperature to stabilize. The observed offset can be corrected for by
running the auto-zeroing function, as described in Section 3.10 of this manual.
3.2.6 Summary of Operating Recommendations
Operating Recommendation
Frequency
Manual
Section
Allow ~20 minutes for instrument
warmup before taking data
Each startup
3.2.2
Pressure should be below 50 psig
Each use
2, 3.2.4
Flow rates should be below 55 L/min
Each use
2
Inlet tubing should be made of
stainless steel
Each use
3.2.3
Check the zero offset
Occasionally or if not used
recently
3.2.5, 3.10, 6
Perform multipoint calibration
•Annually
•Any time major
disassembly of
components is performed
•Any time the zero or span
checks give results outside
of the acceptable limits
1.2, 5
If strong temperature fluctuations are
expected, place the instrument in a
thermally insulated box
User-defined
3.2.4

Model 106-H Ozone Monitor Manual Rev. F-1
7
3.3 Menu
The following diagram summarizes the complete instrument Menu.
Admin
Dat Avg Cfg Lmp
1h10s 5m
Log EndXmt
D/T Cal I/O Unt
D/T: 10:32:21
14/10/2009
Bdr Ext Hrs
T/P
Cfg
REL2 V_OUT
1m
O3
Main Menu
Zero
2s
Ser USB
REL1
2400 4800 19200
Figure 3.1. Instrument Menu.

Model 106-H Ozone Monitor Manual Rev. F-1
8
3.4 Accessing the Main, Zero, and Admin Menus
When first turned on, the instrument will first display the serial number and then start
making measurements. As described in Section 3.2.1, allow a ~20-minute warmup
period.
The Main Menu is accessed using the black Select switch on the front panel of the
instrument. To reach the Main Menu, press and hold in the Select switch until
Menu
is displayed, then release the Select switch. After a few seconds the Main Menu will
appear: Menu
Zero Admin 
where Zero and Admin are submenus that may be selected. A blinking cursor will
show across the Zof the Zero submenu. The Select button may be rotated clockwise
or counterclockwise to move the cursor under the first letter of another submenu. To
select a particular submenu, move the cursor under the first letter of a submenu and
momentarily press (“click”) the Select button. To exit the Main Menu and begin
making measurements again, select and click on the left arrow ().
Rotate the Select switch until the cursor is under the “A” in “Admin.” Press the Select
switch to enter the Admin Menu:
Admin Menu
Dat Avg Cfg Lmp 
where Dat, Avg, Cfg and Lmp are submenus that may be selected. A blinking cursor
will show across the Dof the Dat submenu. The Select switch may be rotated
clockwise or counterclockwise to move the cursor under the first letter of one of the
other submenus. Momentarily press (“click”) the Select switch to select a submenu.
To exit the Admin Menu and go back to the Main Menu, select and click on the left
arrow (). To enter the Zero Menu, select and click on it. Exit the Zero Menu by
selecting and clicking on the left arrow ().
To exit the Main Menu and resume measurements, select and click on the left arrow
().
Refer to Figure 3.1 in Section 3.3 for the various menu functions described in Sections
3.5 through 3.20 below.
3.5 Making Measurements without Averaging or Logging
Access the Admin Menu as described in Section 3.4. Select the Dat submenu from
the Admin Menu by rotating and then clicking the Select switch. The display will now
show:

Model 106-H Ozone Monitor Manual Rev. F-1
9
Dat Menu
Xmt Log End 
Click on End to make measurements without logging new data. This will return you to
the Admin Menu. Select the Avg submenu and then select “2s”to make
measurements without averaging. Click on to return to the Admin Menu and click
again to reach the Main Menu, and click on again to exit the Main Menu and
start making measurements without logging or averaging. Note that “” always takes
you up one level in the menu.
The Ozone Monitor will then alternate every 2 seconds between displaying the most
recent O3measurement along with other instrument measurements. For example, the
display might read O3= 3.48 wt% O2
T=33.3 P=989.7
where the current O3measurement is 3.48 wt% O2, the temperature is 33.3°C and the
pressure is 989.7 mbar (see Section 3.9 below for setting other options for the units
used for T, P, and O3). Two seconds later, this display will be followed by
O3= 3.62 wt% O2
15:07 19/07/17
showing that the time is 3:07 p.m. and the date is 19 July 2017.
3.6 Data Averaging and Data Logging Using the Menu
3.6.1 To Average the Data without Logging
Averaging modes can be selected by choosing Avg from the Admin Menu:
Avg Menu
2s 10s 1m 5m 1h 
Rotate the Select switch to move the cursor to 10s, 1m, 5m or 1h for averaging.
Then click on the averaging time you want to use. You will be returned to the Admin
Menu. To exit the Admin Menu and the Main Menu and start acquiring data, click on
in each case.
When 2s is selected, the rapid raw output of the monitor is viewed every 2 seconds.
When 10s is selected, the unit is in the default operating mode. In this mode, the
average of five 2-s measurements is displayed and updated. When averaging for 1m,
5m, or 1h is selected, the first of the two displays discussed above in Section 3.5 will
alternate with a display of the average, such as
Avg O3= 3.53 wt
15:07 19/07/17

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for example, where the most recent average value of ozone computed is 3.53 wt% O2
(note, because of character limits, only “wt” is displayed), the time of the measurement
is 3:07 p.m. and the date is 19 July 2017.
Note that entering the menu will interrupt the averaging interval that is in progress,
and the averaging interval will start over when the menu is exited and measuring is
resumed.
Averaged data may be logged, thereby greatly extending the length of time that the
internal data logger can be used (see next section).
3.6.2 To Log Data
Data may be logged in the internal data logger. Up to 32,736 data lines containing log
number, ozone concentration, internal (cell) temperature, internal (cell) pressure,
reference photodiode voltage, sample photodiode voltage, date, and time may be
stored in internal memory. Measurement output of 2 s, and averaging options of 10 s,
1 min, 5 min and 1 hr may be selected from the menu (see below), thereby allowing
the instrument to operate and log data for 18 hours, 3.8 days, 22.7 days, 113 days
and 3.7 years, respectively, before filling the memory.
To begin logging data, select the Dat submenu from the Admin Menu using the Select
switch. The display will now show Dat Menu
Xmt Log End 
To start logging data, rotate the Select switch to move the cursor to Log and click to
select the logging mode. You will then receive the prompt:
Overwrite Data?
No Yes 
Warning: If you start logging, all data previously stored in the logger will be
irretrievably lost. If you have data in the logger that you want to keep, be sure to
download it (see Section 3.14 below) before starting logging.
Click on Yes if you are sure you want to start logging new data. This will return you to
the Dat submenu. Click on to return to the Admin Menu, click on again to reach
the Main Menu, and click on again to exit the Main Menu and start making
measurements. Note that “” always takes you up one level in the menu.
When data are being logged, the log number and number of new measurements
made for the next average (minus 1) are displayed in place of the data and time; e.g.,
Avg O3= 3.53 wt
Log= 193:4
where Avg O3 is the average ozone value most recently written to the logger, and the
current log number is 193. (Note that when the average is displayed, the units are
truncated. Refer to the instantaneous reading for the full units of wt% O2, wt% air,
g/m3, etc.) The “4” in 193:4 refers to the number of 2-s data points that have been

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measured so far for inclusion in the next average to be displayed and logged. If 1-min
averaging is used, this number will increment from 0 to 29; for 5-min averaging, the
number will increment from 0 to 149; and for 1-hr averaging, it will increment from 0 to
1799. This number is displayed so that the user will know how many more 2-s
measurements need to be made before a new average is displayed and logged.
If there is a power failure while the instrument is in the logging mode, logging will
resume after power is restored. A note of “Data Interruption” will be written to the logger
prior to writing the first new data line. The instrument can accommodate multiple data
interruptions due to power failures. For example, one can purposely switch the
instrument off, move to another location and restart logging simply by turning the
instrument back on. Data sets will be separated by the data interrupt message.
Note that entering the menu will interrupt the averaging interval that is in progress,
and the averaging interval will start over when the menu is exited and measuring is
resumed.
3.7 To Stop Logging Data
Hold in the Select switch to obtain the Main Menu. Go to the Admin Menu and then
the Dat submenu. Choose and click on the End function. This will end data logging.
You may now return to the Dat submenu to transmit the data to a computer by clicking
on Xmt (see Section 3.14 below). The stored data will reside in memory (even when
new measurements are being made) and can be transmitted using the Xmt function
as often as you like. However, all stored data are lost once logging is started again
using the Log function. Thus, you should always transmit your data to a computer
before restarting logging.
If you fail to End logging prior to transmitting the data using the Xmt function, the
instrument will automatically execute the End function for you prior to transmitting the
data.
3.8 To Set the Time and Date
From the Main Menu, select the Admin menu and the Cfg submenu. Next, select the
D/T submenu. The display will read, for example:
D/T: 14:32:21 
17/10/2016
meaning that it is 21 seconds after 2:32 p.m. on October 17, 2016 (military time and
European date). To change a number in the date and time, rotate the Select switch to
underline the numeral you want to change. A single click then causes a blinking
cursor to cover that numeral. The number can then be changed by rotating the Select
switch. Once the number is correct, click on the Select switch to turn off the blinking
cursor. You may now rotate the Select switch to choose another numeral to change.
Once the time and date is correct, clicking on will set the internal clock to that time
and return the display to the Cfg menu. As in setting a digital watch, the seconds
should be set in advance of the real time since the clock starts to run again only when

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the set time is entered, in this case by exiting all menus by clicking on , and
resuming measurements.
3.9 To Change the Ozone, Temperature, and Pressure Measurement Units
From the Main / Admin / Cfg submenu, choose the Unt submenu:
Unt Menu
T/P O3 
Choose O3 to change the ozone units:
O3 Units Menu
Ozone: vol% 
Select the units displayed (e.g., vol% above), depress the select switch to obtain a
blinking cursor and rotate the select switch to choose between units of percent by
weight in oxygen (Wt%O2), percent by weight in air (Wt%air), grams per normalized
cubic meter (g/Nm3, normalized to 1 atm and 0°C), grams per cubic meter (g/m3) or
percent by volume (Vol%). Press the select switch again to remove the blinking cursor,
and return to the Unt menu using the left arrow. Ozone concentrations will now be
calculated and reported in the chosen units.
Select T/P from the Unt submenu to change the temperature and pressure units:
T/P Units Menu
T:C P:mbar 
You may now select units of °C, °F, or K for temperature and mbar, psi, or torr for
pressure using the same procedure used to set the units for ozone concentration.
3.10 To Auto-Zero the Instrument
Check the zero measurement occasionally, or if the instrument has not been used
recently. The instrument has an auto-zeroing function to enable easy zeroing.
First, purge the instrument with zero gas at a minimum flow rate of 0.2 L/min for at
least 2 minutes. For an accurate measurement, the instrument must have been
turned on long enough for the internal temperature to stabilize (at least 20 minutes).
From the Main Menu, select and click on Zero to display:
Providing Zero
Air? Yes Cancel
Select Yes. You will then see the status message:
Zeroing…
When the zeroing function is complete, you will see the status message:
Zeroing…
Found New Zero