Trotec OZ-ONE Operating Manual

OZ-ONE

EN

OPERATING MANUAL

OZONE METER

TRT-BA-OZ-ONE-TC-002-EN

Table of contents

Notes regarding the operating manual................................. 1

Safety .....................................................................................1

You can download the current version of the operating manual
and the EU declaration of conformity via the following link:

Information about the device................................................3

Transport and storage...........................................................5

Operation ...............................................................................6

Maintenance and repair ........................................................8

Errors and faults....................................................................9

Disposal .................................................................................9

Warranty ................................................................................9

Notes regarding the operating manual

Symbols

Warning of electrical voltage

This symbol indicates dangers to the life and health of
persons due to electrical voltage.

Warning

This signal word indicates a hazard with an average
risk level which, if not avoided, can result in serious
injury or death.

Caution

This signal word indicates a hazard with a low risk
level which, if not avoided, can result in minor or
moderate injury.

Note

This signal word indicates important information (e.g.
material damage), but does not indicate hazards.

Info

Information marked with this symbol helps you to carry
out your tasks quickly and safely.

OZ-ONE

https://hub.trotec.com/?id=41860

Safety

Read this manual carefully before starting or using the
device. Always store the manual in the immediate vicinity
of the device or its site of use!

Warning
Read all safety warnings and all instructions.

Failure to follow the warnings and instructions may
result in electric shock, fire and/ or serious injury.

Save all warnings and instructions for future
reference.

This appliance can be used by children aged from
8years and above and persons with reduced physical,
sensory or mental capabilities or lack of experience
and knowledge if they have been given supervision or
instruction concerning use of the appliance in a safe
way and understand the hazards involved.
Children shall not play with the appliance. Cleaning and
user maintenance shall not be made by children
without supervision.

• Do not use the device in potentially explosive rooms.

• Do not use the device in aggressive atmosphere.

• Protect the device from permanent direct sunlight.

• Do not remove any safety signs, stickers or labels from the
device. Keep all safety signs, stickers and labels in legible
condition.

• Do not open the device with a tool.

• Observe the storage and operating conditions as given in
the Technical data chapter.

Follow the manual

Information marked with this symbol indicates that the
operating manual must be observed.

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ozone meter OZ-ONE

Intended use

Only use the device for measurements of the ozone
concentration in the air as well as for indoor temperature and
humidity measurements within the measuring range specified in
the technical data.

To use the device for its intended use, only use accessories and
spare parts which have been approved by Trotec.

Improper use

Do not use the device in potentially explosive atmospheres, for
measurements in liquids or at live parts. Trotec accepts no
liability for damages resulting from improper use. In such a
case, any warranty claims will be voided. Any unauthorised
modifications, alterations or structural changes to the device are
forbidden.

Personnel qualifications

People who use this device must:

• have read and understood the operating manual, especially
the Safety chapter.

Residual risks

Warning

Risk of suffocation!
Do not leave the packaging lying around. Children may
use it as a dangerous toy.

Warning

The device is not a toy and does not belong in the
hands of children.

Warning

Dangers can occur at the device when it is used by
untrained people in an unprofessional or improper way!
Observe the personnel qualifications!

Caution

Keep a sufficient distance from heat sources.

Note

To prevent damages to the device, do not expose it to
extreme temperatures, extreme humidity or moisture.

Note

Do not use abrasive cleaners or solvents to clean the
device.

EN 2

ozone meter OZ-ONE

Information about the device

Device description

The device OZ-ONE is an ozone meter for measuring the ozone
concentration in the air. It can also be used to determine the air,
dew point and wet-bulb temperature as well as the humidity
level of indoor areas.

For assessing the measurements, a Max/Min function
(maximum and minimum value), the time-weighted average, the
short-term exposure limit and a Hold function for freezing the
currently measured value are also available.

When not in use, an automatic switch-off saves the batteries.

Formation, perception and distribution of ozone

The word ozone has become an integral part of our vocabulary
and the colourless, toxic gas is part of our everyday life. The
irritant effect ozone can have on our eyes and airways has been
common knowledge for a few years now, especially since the
increasing ozone volume can be attributed to the so-called
summer smog. Ozone is further generated during certain
industrial processes.

Ozone (chemical symbol: O3) consists of three oxygen atoms.
Ozone is created wherever oxygen molecules(O2) in the air are
turned into atoms(O) due to electrical energy or UVradiation. It
is these atoms that can react with the oxygen molecules to form
ozone(O3).

In case of a high solar irradiation ozone forms involving other air
pollutants. The nitrogen oxides(NOx) from automobiles,
domestic heating systems, power plants and the industry play a
major role in this.

Depending on the concentration, ozone can have a very intense
smell similar to chlorine, hay or carnations. By nature, the
human nose is already vastly superior to most measuring
devices: It detects the gas with a concentration of as little as

0.01ml/m3. What this means when compared to other irritant
gases is that we humans can already detect even minor
quantities of ozone which gives us the opportunity to take
corresponding precautions to avoid any hazard caused by the
gas in due time. However, our nose also has a crucial
disadvantage compared with measuring devices: the so-called
habituation effect. After only a brief period of time spent in an
ozone-polluted environment we become so acclimated to the
smell that we go noseblind.

The impact of ozone on human beings

The sensitivity to ozone depends on its concentration and varies
for each individual. Ozone is an oxidative irritant gas, affecting
eyes, nose, pharynx and lungs even at low concentrations. The
mucous membranes are unable to stop it seeing as ozone is
hardly soluble in water. As a result, the gas can be carried
deeper into the lungs than other irritant gases. Concentrations
of 200 µg/mm3 and higher can cause the following symptoms:

• irritations of the mucous membranes, eyes and the
respiratory tract

• hoarseness, coughs and headaches

• feeling of constriction behind the sternum

• reduced physical performance

The main damage is caused in the respiratory tract which can
lead to breathing difficulties and a reduced respiratory volume.
Late complications can include nosebleeds, a bronchitis (or
tracheitis) or a pulmonary oedema. But the transition from
irritations without lasting consequences to long-term changes
with pathological significance is very smooth.

Ozone threshold and target values

The information threshold for ozone concentrations amounts to
180µg/m3 (1-hour value) and the alert threshold is 240µg/m

3

(1-hour value). From an ozone concentration of 180µg/m3 the
media starts to inform the public of the recommended
behaviour. Furthermore, a target value has been specified to
protect human health: Averaged over three years, the daily
maximum 8-hour value of 120µg/m3 must not be exceeded on
more than 25days per calendar year. In the long run, the
maximum average values determined over an 8-hour period are
not supposed to exceed 120µg/m3 altogether. To protect the
vegetation, a target value of 18,000µg/m3 applies for a 5-year
average. This is the summed up difference between the hourly
average values above 80µg/m3 measured during the daylight
hours (8a.m. to 8p.m.) in the main growing season between
May and July and 80µg/m3.

3 EN

ozone meter OZ-ONE

Device depiction

6 7 8 10 119

4

3

2

1

5

12

13

µg/m

3

MAX MIN TWA STEL

14
15

16

17

19

15

20

18

No. Designation

1 Measuring probe with protective cap
2 MAX/MIN button
3 UNIT button
4 Lamp button
5 MiniUSB port
6 Tripod thread
7 SET button
8 MODE button
9 Power button
10 HOLD button
11 Display
12 Battery compartment with cover
13 Connector for the power adapter

Display

No. Designation

14 Measuring mode indication
15 Indication of the unit for the ozone concentration:

• ppm

• µg/m

3

16 Measurement value display for ozone concentration
17 Indication of the unit for the ambient temperature/

relative humidity
18 Indication of the ozone measuring mode
19 Measurement value display for:

• Ambient temperature

• Relative humidity

• Dew point temperature

• Wet-bulb temperature

20 Activated alarm indication

EN 4

ozone meter OZ-ONE

Technical data

Parameter Value

Model OZ‑ONE

Article number 3.510.006.110
Weight 185 g
Dimensions

(length x width x height)

Ozone concentration

Measuring principle Electrochemical sensor
Measuring range 0 to 1,996μg/m3 (at 20°C, 50%RH

Accuracy < 0.1ppm (<200μg/m³):

Measuring range
resolution

Drift ±2%/ month*

Relative humidity

Measuring range 0.0%RH to 99.9%RH
Accuracy ±3 %RH (at 10 % to 70% and

Measuring range
resolution

Reaction time 2 s
Operating conditions 0°C to 50°C, <80%RH

Storage conditions -20°C to 50°C, <90 %RH

210 mm x 60 mm x 40 mm

and 1,013hPa)

±0.02ppm (±40µg/m³) at 25°C
and 1,013hPa; otherwise ±10%

1µg/m3 or 0.01ppm (10ppb)

25 °C)
±5 %RH (0% to 10% and 70% to

99.9%)

0.1%

(non-condensing)

(non-condensing)

* This systematic measurement deviation is attributable to the
characteristics of the required O₃sensor technology.
Electrochemical sensors are wear products and subject to a
continuous aging process from the date of manufacture (see
also chapter Errors and faults).

Transport and storage

Note

If you store or transport the device improperly, the
device may be damaged.
Note the information regarding transport and storage of
the device.

Transport

The manufacturer packed the device to the best of his abilities
to protect it against transport damage.

Storage

When the device is not being used, observe the following
storage conditions:

• dry and protected from frost and heat

• protected from dust and direct sunlight

• Store the device in the resealable zip bag it has been
supplied in.

• The storage temperature is the same as the range given in
the Technical data chapter.

• Remove the batteries from the device.

Air temperature

Measuring range 0°C to 50 °C or 32 °F to 122 °F
Accuracy ± 0.6 °C
Measuring range

0.1 °C

resolution
Automatic switch-off after approx. 15 minutes
Power supply 4 AAAbatteries

Scope of delivery

• 1x Device OZ-ONE

• 4 x AAAbatteries

• 1 x Quick guide

• 1x Storage bag

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ozone meter OZ-ONE

Operation

µg/m

3

MODE

3

µg/m

3

Inserting the batteries

Note

Make sure that the surface of the device is dry and the
device is switched off.

1. Open the battery compartment by sliding open the
cover(12) with your fingers.

2. Remove the battery compartment cover.

3. Insert the batteries (4batteries of typeAAA) into the
battery compartment with correct polarity.

4. Slide the cover back onto the battery compartment.

Switch-on and ozone level measurements

Note:

Note that moving from a cold area to a warm area can lead to
condensation forming on the device's circuit board. This
physical and unavoidable effect can falsify the measurement. In
this case, the display shows either no measured values or they
are incorrect. Wait a few minutes until the device has become
adjusted to the changed conditions before carrying out a
measurement.

1. Briefly press the Power button(9).

ð The display will be activated and the device will be in a

warm-up phase for about three minutes.

ð At the end of that phase the device is ready for

operation and can be used for measurements.

ð On the measurement value display the device indicates

the ozone concentration(16) as well as the relative
humidityand ambient temperature(19).

Info

If no ozone concentration is detected in the current
measuring range, the measuring device indicates
"0.00" on the measurement value display(16).

Displaying DP and WBvalues

The ozone concentration is always displayed by the
measurement value display for ozone concentration(16) of the
device.

Further measured values that can be indicated are the dew
point temperatureDP and the wet-bulb temperatureWB.

Please proceed as follows to have these values displayed by the
device:

1. Repeatedly press the MODE button(8) until the desired
measured value is displayed.

Setting the HOLD function

1. Press the HOLD button(10).

ð The current values for the ozone concentration, relative

humidity level and ambient temperature will be held.

2. Press the HOLD button(10) again.

ð The display again indicates the current measured

values.

Setting the MAX/MIN function

You can view the highest or lowest value for the ozone
concentration from the current measuring interval.

To do so, please proceed as follows:

1. Briefly press the MAX/MIN button(2).

ð The MAX indication appears on the display(11) in the

measuring mode indication(14).

ð The display now indicates the highest ozone

concentration measured since the device was switched
on in the selected measuring mode.

2. Press the MAX/MIN button(2) again.

ð The MIN indication appears on the display(11) in the

measuring mode indication(14).

ð The display now indicates the lowest ozone

concentration measured since the device was switched
on in the selected measuring mode.

3. Press the MAX/MIN button(2) three times in total to return
to the normal measuring mode.

ð The display(11) again indicates the current measured

value for the ozone concentration.

EN 6

ozone meter OZ-ONE

Resetting the MAX/MINvalues

The MAX/MIN values of the current measuring interval can be
reset. To do so, please proceed as follows:

1. When MAX or MINindication appears on the display, press
and hold the HOLD button(10) for approx. 3seconds.

ð "CLr" will be displayed. The MAX/MIN values of the

current measuring interval will be reset and the device
automatically returns to the normal measuring mode.

Displaying the time-weighted average of the ozone
concentration

The time-weighted averageTWA indicates the average value of
the ozone concentration measured over a period of eight hours.
If the device was in operation for less than eight hours, the
average value will be calculated based on the time span since
the last switch-on.

Please proceed as follows to have the time-weighted average
valueTWA displayed by the device:

1. Repeatedly press the MAX/MIN button(2) until TWA is
indicated in the measuring mode indication(14) of the
display(11).

ð The device indicates the time-weighted averageTWA

for the measured ozone concentration.

Displaying the short-term exposure limit for the ozone
concentration

The short-term exposure limitSTEL indicates the average value
of the ozone concentration measured over a period of
15minutes. If the device was in operation for less than
15minutes, the short-term exposure limitSTEL will be
calculated based on the time span since the last switch-on.

Please proceed as follows to have the short-term exposure
limitSTEL displayed by the device:

1. Repeatedly press the MAX/MIN button(2) until STEL is
indicated in the measuring mode indication(14) of the
display(11).

ð The device indicates the short-term exposure limitSTEL

for the measured ozone concentration.

Changing the unit for the ozone concentration ppm/ μg/m

The device can display the ozone concentration in either ppm or
μg/m3. To change the units at the device, please proceed as
follows:

1. Press and hold the UNIT button(3) for approx. 3seconds to
change the unit.

ð The currently selected unit ppm or μg/m3 will be

indicated in the unit indication for the ozone
concentration(15) of the display(11).

Changing the unit °C / °F

The default setting for the temperature unit is °C.
Please proceed as follows to change the temperature unit at the

device:

1. Press the UNIT button(3) to change the unit.
ð The currently selected unit °C or °F will be indicated in

the unit indication for the ambient temperature/ relative
humidity(17) of the display(11).

Switching on the background illumination

1. Briefly press the Lamp button(4).
ð The background illumination is activated.

2. Briefly press the Lamp button(4) again to deactivate the

background illumination.

Configuring the alarm for the ozone limit value

The ozone limit alarm has been preconfigured in the factory for
a value of 0.06ppm. If a measurement exceeds this value and
the alarm function is activated, an acoustic signal will be
emitted by the device.

The device allows you to manually configure the ozone limit
value in a range between 0.00ppm and 1.00ppm.

Please proceed as follows to manually configure the ozone limit
value at the device:

1. Press and hold the SET button(7) for approx. 3seconds.
ð "SEt" will appear on the display(11) and the

measurement value display for the ozone
concentration(16) flashes.

2. Now you can adjust the value as desired by use of the

HOLD button(10) and the Lamp button(4).

3. Press the HOLD button(10) to increase the value.

4. Press the Lamp button(4) to reduce the value.

5. Use the buttons MAX/MIN(2) and MODE(8) to switch

between the different positions in the measurement value
display for the ozone concentration(16).

6. Press the MAX/MIN button(2) to move one position to the

right in the measurement value display for the ozone
concentration(16).

3

7. Press the MODE button(8) to move one position to the left

in the measurement value display for the ozone
concentration(16).

8. Press and hold the SET button(7) to save the changes.
ð "SAVE" appears on the display(11) and the device

switches to the air pressure setting screen.

7 EN

ozone meter OZ-ONE

Adjusting the air pressure value

The air pressure has a significant impact on the measures
ozone level. In order to achieve better measurement results, you
can manually adjust the air pressure value at the device. You
can adjust the air pressure in a range from 300hPa to
1100hPa.

Please proceed as follows to adjust the air pressure value at the
device:

1. Press and hold the SET button(7) for approx. 3seconds.
ð "SEt" will appear on the display(11) and the

measurement value display for the ozone
concentration(16) flashes.

2. Press and hold the SET button(7).
ð "SAVE" appears on the display(11) and the device

switches to the air pressure setting screen.

3. Press the HOLD button(10) to increase the air pressure

value.

4. Press the Lamp button(4) to reduce the air pressure value.

5. Use the buttons MAX/MIN(2) and MODE(8) to switch

between the different positions in the display for the
reference air pressure.

6. Press the MAX/MIN button(2) to move one position to the

right in the display for the reference air pressure.

7. Press the MODE button(8) to move one position to the left

in the display for the reference air pressure.

8. Press and hold the SET button(7) to save the changes.
ð The selected air pressure value will be saved and the

device automatically returns to the normal measuring
mode.

De-/Activating the alarm function for the ozone limit value

Once the ozone limit value has been configured, the alarm
function can be activated or deactivated by hand.

Please proceed as follows to configure the alarm function at the
device:

1. Press the Power button(9) for approx. 1s.
ð The activated alarm indication(20) will be displayed and

the alarm function is activated.

2. Press the Power button(9) again for approx. 1s to

deactivate the alarm function.

ð The activated alarm indication(20) will no longer be

displayed and the alarm function is deactivated.

Automatic switch-off

In default setting, the automatic switch-off function is activated.
The device switches off when not in use for 15 minutes.

To deactivate automatic switch-off at the device, please
proceed as follows:

1. Switch the device off by pressing the Power button(9) and
holding it for approx.3s.

2. Simultaneously press the Power button(9) and the HOLD
button(10) until the message "n" is displayed.

ð Automatic switch-off is permanently deactivated.

Info

If you switch off the device manually, the automatic
switch-off setting is reset, i.e. automatic switch-off is
activated again when the device is switched back on.

Switch-off

If automatic switch-off is activated, the device switches off after
15minutes of non-use.

1. Press and hold the Power button(9) for approx. 3seconds.

ð The device will be switched off.

Maintenance and repair

Battery change

A battery change is required, when a battery indication lights up
on the display(11) or the device can no longer be switched on.
See chapter Operation.

Cleaning

Clean the device with a soft, damp and lint-free cloth. Ensure
that no moisture enters the housing. Do not use any sprays,
solvents, alcohol-based cleaning agents or abrasive cleaners,
but only clean water to moisten the cloth.

Repair

Do not modify the device or install any spare parts. For repairs
or device testing, contact the manufacturer.

EN 8

ozone meter OZ-ONE

Errors and faults

Li-Ion

The device has been checked for proper functioning several
times during production. If malfunctions occur nonetheless,
check the device according to the following list.

The following error messages can be displayed in the
measurement value display for the ozone concentration(16):

Error no. Cause Remedy

Er1 Defective sensor Please contact the
Er2 Measured values

outside the
measuring range

Design-related, the electrochemical sensor deployed in the
device offers various advantages, e.g.:

• short warm-up phase

• linear response

• good repeatability and accuracy

• fast response time(1–2s)

• low energy intake

• only limited cross-sensitivity to other VOCs

Due to its functional principle, though, one ought to observe the
following:

• A high humidity level as well as temperature changes can
influence the measurement and may lead to increased
measured values.

• Based on the ongoing oxidation the sensor lifetime is
limited. We therefore recommend to put the device back
into the resealable plastic zip bag it has been delivered in
to prevent it from being continuously exposed to the
oxygen in the air during storage.

• There is a high cross-sensitivity to nitrogen dioxide (NO2).

customer service.

Disposal

The icon with the crossed-out waste bin on waste
electrical or electronic equipment stipulates that this equipment
must not be disposed of with the household waste at the end of
its life. You will find collection points for free return of waste
electrical and electronic equipment in your vicinity. The
addresses can be obtained from your municipality or local
administration. For further return options provided by us please
refer to our website www.trotec24.com.

The separate collection of waste electrical and electronic
equipment aims to enable the re-use, recycling and other forms
of recovery of waste equipment as well as to prevent negative
effects for the environment and human health caused by the
disposal of hazardous substances potentially contained in the
equipment.

In the European Union, batteries and accumulators must not be
treated as domestic waste, but must be disposed of
professionally in accordance with Directive 2006/66/EC of the
European Parliament and of the Council of 6September 2006
on batteries and accumulators. Please dispose of batteries and
accumulators according to the relevant legal requirements.

Warranty

As a result of its construction and functional principle the
integrated O3sensor is a wear product.

For the O3sensor itself we provide a pan-European one-year
warranty from the date of purchase. The guarantee is issued by:

TrotecGmbH&Co.KG, Grebbener Straße 7, D-52525
Heinsberg.

Statutory warranty rights (liability for defects) shall not be
limited by this warranty in any way. The warranty covers any
repair and shipment charges in case of defects or damages at
the O3sensor within the warranty period and not resulting from
improper handling. In the case of a warranty claim, please
contact TrotecGmbH&Co.KG at the address indicated above.

9 EN

ozone meter OZ-ONE

Trotec GmbH & Co. KG

Grebbener Str. 7
D-52525 Heinsberg

[phone]
[phone]

[e-mail]
www.trotec.com