Trotec BZ26 User manual

TRT-BA-BZ26-TC220429TTRT01-001-EN
BZ26
EN
OPERATING MANUAL
CO₂ AIR QUALITY MONITOR

2 EN
CO₂ air quality monitor BZ26
Table of contents
Notes regarding the instructions .........................................2
Safety .....................................................................................2
Information about the device................................................3
Transport and storage...........................................................5
Operation ...............................................................................6
Maintenance and repair ........................................................9
Disposal .................................................................................9
Notes regarding the instructions
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.
Follow the manual
Information marked with this symbol indicates that the
instructions must be observed.
You can download the current version of the instructions and
the EUdeclaration of conformity via the following link:
BZ26
https://hub.trotec.com/?id=46639
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.
• Do not use the device in potentially explosive rooms or
areas and do not install it there.
• Do not use the device in aggressive atmosphere.
• Do not immerse the device in water. Do not allow liquids to
penetrate into the device.
• The device may only be used in dry surroundings and must
not be used in the rain or at a relative humidity exceeding
the operating conditions.
• 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.
• Observe the storage and operating conditions (see
Technical data).
Intended use
Only use the device for air quality (CO2level), indoor
temperature and humidity measurements within the measuring
range specified in the technical data. Observe and comply with
the technical data.
To use the device for its intended use, only use accessories and
spare parts which have been approved by Trotec.

EN 3
CO₂ air quality monitor BZ26
Foreseeable misuse
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 instructions, especially the
Safety chapter.
Residual risks
Warning of electrical voltage
There is a risk of a short-circuit due to liquids
penetrating the housing!
Do not immerse the device and the accessories in
water. Make sure that no water or other liquids can
enter the housing.
Warning of electrical voltage
Work on the electrical components must only be
carried out by an authorised specialist company!
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.
Information about the device
Device description
The CO₂air quality monitor is a mains-powered measuring
device with a comprehensive range of measurement options.
It comes with the following functional properties and equipment
features:
• PASmeasurement of carbon dioxide concentrations in the
room air
• Simultaneous indication of CO₂values, room temperature,
humidity level, date, weekday and time
• Minimum and maximum value function for CO₂, air
temperature and humidity
• Carbon dioxide alarm function with acoustic alarm for a
freely definable limit value
• Additional CO₂indicator icon (feel-good indication)
• Automatic baseline calibration
• Manual calibration
Automatic baseline calibration
The expected CO2 fresh air value is about400ppm (0.04%vol)
nowadays. The device assumes this value to be the lowest limit
value (baseline).
A special algorithm continuously monitors the lowest CO2 value
detected by the sensor over a pre-configured time interval for
several days. The algorithm slowly corrects any long-term drift
detected compared to the expected CO2 fresh air value of
400ppm (or 0.04%vol).
If the device is used normally indoors, the carbon dioxide
content will always drop almost to the low level of the outdoor
air in the course of a week.
By recording the values over a period of 8days and then
comparing the lowest value to the 400pm point, the device
determines whether or not it needs to adjust the zero point.
The algorithm makes use of the fact that the CO2 content in
buildings and rooms regularly stabilizes at a minimum for a
certain period of time when they are not occupied. In rooms that
are continuously occupied or where there is a constantly
increased CO2 concentration (e.g. in greenhouses), the principle
of automatic balancing therefore does not work.

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CO₂ air quality monitor BZ26
Device depiction
1
3
4
6
7
2
8
12
11
9
14
10
15
13
5
16
No. Designation
1 Main display
2 Snooze/illumination sensor
3 Relative humidity indication
4 Day and month indication
5 Weekday display
6 Time indication
7 Temperature indication
8 Wall holder
9UPbutton
10 DOWNbutton
11 ALERTbutton
12 Foot
13 Input of external power supply
14 Battery compartment
15 ALARMbutton
16 MODEbutton
Main display
21
20
19
18
17
22
23
No. Designation
17 Ventilation indication (alarm value reached)
18 Alarm activated indication
19 MAX/MINindication (maximum/minimum value is shown
on the display)
20 Unit measured CO2value (parts per million)
21 Colour indication of the measured CO2 value
22 Measured CO2value
23 Feel-good indication

EN 5
CO₂ air quality monitor BZ26
Technical data
Parameter Value
Model BZ26
Display LCDdisplay
Carbon dioxide (ppm)
Carbon dioxide
sensor
PAS sensor (photoacoustic spectroscopy)
Measuring range 400 to 5000ppm
Accuracy ±50ppm + 5 %
Resolution 1ppm
Measuring frequency
carbon dioxide
every 6seconds
Relative humidity
Measuring range 20%RH to 95%RH
Accuracy ±5%RH with 40 % to 80 %
±8%RH with 20% to 39% and 81%
to95 %
Resolution 1 %
Measuring frequency
humidity level
every 30seconds
Air temperature
Measuring range -9.9°C to 60°C (14.18°F to 140°F)
Accuracy < 0 °C: ± 2°C
0 °C to 40 °C: ± 1 °C
> 40 °C: ± 2°C
Resolution 0.1°C/°F
Measuring frequency
air temperature
every 30seconds
Ambient conditions
Operation -5°C to 50°C (23°F to 122°F)
and 90%RH (non-condensing)
Storage -5°C to 50°C (23°F to 122°F)
and 90%RH (non-condensing)
Power supply external
optionally 3batteries 1.5V, type AAA
(included in the scope of delivery)
Dimensions
(depth x width x
height)
22mmx 89mmx 125mm
Weight (packaging
excluded)
165g
Scope of delivery
• 1x Device BZ26
• 1 x USB cable
• 3x Battery 1.5V AAA alkaline
• 1 x Quick guide
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
When transporting the device, ensure dry conditions and and
protect the device from external influences e.g. by using a
suitable bag.
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
• the storage temperature complies with the values specified
in the Technical data

6 EN
CO₂ air quality monitor BZ26
Operation
Info
The device can be operated using both a power
adapter and batteries (3 x AAA type alkaline, 1.5V).
Due to the increased power requirement of the CO2
sensor, the device is designed for permanent use with
mains power, though. Via the USB cable provided, the
device can therefore be supplied with power via both
PC and almost any commercially available USB power
adapter. During operation with mains power, the CO2
measurement is activated permanently. During
operation with batteries, the CO2 measurement can be
activated for one minute in each case, if required.
Info
When starting up the device for the first time, set it up
in a well-ventilated room for at least one hour, enabling
it to carry out a correct baseline calibration. This
makes manual calibration (see chapter Calibrating the
device) dispensable.
Operation with batteries
If you want to operate the device by means of batteries,
batteries must be inserted into the battery compartment before
you use the device for the first time:
1. Open the battery compartment at the rear of the device by
sliding the cover off the device by the latch.
2. Insert three AAA 1.5V alkaline batteries with correct
polarity into the battery compartment.
3. Reattach the cover to the battery compartment.
ðThe cover should click into place.
ðThe display will be activated and an acoustic signal is
emitted. Then the device switches to the power saving
mode and dims the display.
Touch the snooze/illumination sensor(2) to activate the display.
How to activate the CO2 measurement function:
1. Briefly press the DOWN(10) button.
ðThe device will start a countdown of 30seconds.
ðThen the device indicates the CO2 value for one minute.
During this time, the indication is updated approx. every
5seconds.
ðAfterwards the measured CO2 value display goes out
Operation with power adapter
1. To use the device, apply the provided USB cable to connect
the device to the mains via a PC or a commercially
available USB power adapter.
ðThe display will be activated and an acoustic signal is
emitted.
ðThe display counts down from 60 to 1 before the CO2
value is indicated. At the same time, the display
indicates the temperature, humidity level and time, date
and weekday.
Setting the date and time
Press the MODEbutton(16) for approx. 3seconds to access the
settings menu. By briefly pressing the MODEbutton(16), you
can then successively carry out the following settings:
• year
• date format day/month (D M) or month/day (M D)
• month (1 to 12)
• day (1 to 31)
• hour format (12/24)
• hour (1 to 12 or 0 to 23, depending on the hour format set)
• minutes (0 to 59)

EN 7
CO₂ air quality monitor BZ26
You can press the DOWNbutton(10) to reduce the indicated
value, or the UPbutton(9) to increase the indicated value.
MODE UP
DOWN
ALARM ALERT
16
9
10
By pressing the MODEbutton you can access the next setting
item or exit the settings menu after setting the minutes.
If no button is pressed for 10seconds, the settings menu is
terminated.
Activating the alarm (alarm clock)
You have the option of activating two alarm times:
• AL1
• AL2
To activate the alarm, press the ALARMbutton(15). By pressing
the button repeatedly, you can activate the following
combinations in succession:
1. AL1 active
2. AL2 active
3. AL1 and AL2 active
4. no alarm activated
ðThe activated alarm (AL1/AL2) is indicated on the display by
a symbol.
Setting the alarm times
• AL1: Press the MODEbutton(16) once
• AL2: Press the MODEbutton(16) twice
The alarm time (AL1/AL2) set previously is shown. Please
proceed as follows to change the alarm time:
1. Press the MODEbutton(16) for approx. 3seconds.
ðThe hour display flashes.
2. Set the hours on the display by pressing the UP(9) or
DOWNbutton(10).
3. Switch to the minute display by pressing the
MODEbutton(16).
ðThe minute display flashes
4. Set the minutes on the display by pressing the UP(9) or
DOWNbutton(10).
5. Exit the settings menu by pressing the MODEbutton(16).
Turning off the alarm
When the acoustic alarm signal is emitted, you can turn it off by
pressing any of the buttons (except by touching the snooze/
illumination sensor(2)).
The alarm will stop automatically after 1minute if no button is
pressed.
Snooze function
The device comes equipped with a snooze function enabling you
to pause the alarm for a short time. The acoustic alarm signal
will be emitted once more after 5minutes:
1. When the alarm signal sounds, touch the snooze/
illumination sensor(2).
ðThe alarm will stop and a snooze symbol will flash on
the display.
2. After 5minutes, when the acoustic alarm signal is emitted
once more, you can use the snooze function again by
touching the snooze/illumination sensor(2).
3. Turn off the snooze function by pressing any of the buttons
(except by touching the snooze/illumination sensor(2)).
ðThe symbol for the snooze function will stop flashing
and the snooze function is deactivated.
Enabling CO2 alarm
The device features an alarm function that indicates when a
previously set CO2threshold is exceeded.
Please proceed as follows to enable the alarm function:
1. Press the ALERT button(11).
ðThe alarm function is enabled and the alarm
symbol(18) appears on the display.
ðAs soon as the measured value exceeds the previously
set limit value, an acoustic alarm signal will be emitted
and the ventilation indication(17) on the display flashes.
2. Press the button again to disable the CO2 alarm.
ðThe alarm function is disabled and the alarm
symbol(18) appears on the display.
ðIf the measured value exceeds the limit value that is set,
however, not activated, the ventilation indication(17)
flashes on the display.
Info
The alarm limit value is set to 1000ppm by default.

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CO₂ air quality monitor BZ26
Setting the threshold value for the CO2 alarm
Please proceed as follows to set a new limit value:
1. Press the ALERT button(11) for approx. 3seconds.
ðThe limit value set previously appears and flashes on
the display.
2. Set the limit value for the CO2 alarm by pressing the UP(9)
or DOWNbutton(10).
3. Press the ALERT button(11) again to confirm the new limit
value.
ðThe display of the limit value goes out.
ðThe value shown most recently is set as the new limit
value.
Feel-good indication and colour indication
The device is equipped with a colour indication(21 and feel-
good indication(23) to illustrate the effect of the indicated
measured CO2 value on humans.
21
23
The feel-good indication consists of the following four symbols:
Symbol Colour CO2 value Air quality
dark green 400 to 650ppm decent
light green 651 to 900ppm normal
red 901 to 1650ppm poor
dark red 1651 to 5000ppm and
higher
very poor
Showing the MAX/MINvalues
Info
The maximum and minimum values apply for one day.
At 00:00, the current values are deleted.
To show the maximum and minimum values for the CO2 value,
air temperature and humidity, proceed as follows:
1. Press the UPbutton(9).
ðThe display shows the maximum values of CO2 value, air
temperature and humidity.
2. Then press the UP button(9) again.
ðThe display shows the minimum values of CO2 value, air
temperature and humidity.
3. Press the UPbutton(9) again to switch to the indication of
the current values.
You can delete the maximum and minimum values manually by
pressing the UPbutton(9) for approx. 2seconds.
Adjusting the brightness level of the display
Touch the snooze/illumination sensor(2) to adjust the
brightness level of the display. You can select the following
levels one after the other:
• 100% brightness
• 30 % brightness
• 1 % brightness
Info
In mere battery operation, the display is dimmed again
to a brightness level of 1% after 10seconds in order
to save energy.
Switching the temperature indication between°C and°F
Press the DOWNbutton(10) for approx. 3seconds to switch the
unit of the temperature indication between °C and °F.
Device calibration
The device is provided with an automatic baseline calibration
function which carries out automatic calibration every 7days.
You also have the option to calibrate the device manually.
Observe the following for carrying out manual calibration:
• Carry out the calibration in an ambient CO2 concentration
of approx. 400ppm. Outdoors, this is most likely to be
expected on a clear, sunny day. Never carry out manual
calibration in an environment with an actual CO2
concentration that is not known to you.
• Do not carry out the calibration on rainy days, since the
high humidity level has an impact on the CO2
concentration.
• Do not carry out the calibration in places with large
volumes of persons, places with a high CO2 concentration
or near open fires or exhaust outlets.
• When carrying out the calibration, keep away from
animals, humans or plants, since they may affect the
CO2concentration.
• Keep away from perfumes, paints/lacquers, air fresheners,
cigarette smoke, alcohol, chemical substances, etc., as
they may distort the measurement results.
• Recalibrate the device if you determine unrealistic
measured values.
Please proceed as follows for manual calibration:
1. Disconnect the device from the mains cable plug and
remove the batteries from the device if the device contains
batteries.
2. Simultaneously press and hold the MODEbutton(16) and
the DOWNbutton(10).
3. Connect the device to the mains cable plug again while
keeping the buttons pressed.

EN 9
CO₂ air quality monitor BZ26
4. Keep the MODEbutton(16) and DOWNbutton(10) pressed
simultaneously for approx. 3seconds to enable manual
mode for the calibration.
ðAn acoustic signal is emitted.
ðThe indication CAL will flash on the display and the
manual calibration process that takes approx. 4minutes
will start.
ðYou can now let go of the two buttons.
ðAfter successful calibration, the indication PASS will
show on the display. Then the CO2 value is displayed
again.
ðIf the calibration has failed, the display will show the
indication ERR. In this case, carry out a new calibration.
5. Remove the mains plug from the device.
6. Plug the mains plug back into the device and/or reinsert
the batteries.
ðThe calibration is complete.
Switching the device off
Disconnect the device from the mains cable plug and remove
the batteries to switch off the device.
Maintenance and repair
Battery change
A battery change is required when the battery symbol is
indicated on the display or if the display itself is no longer or
only partly visible.
If a CO2 measurement is enabled during battery operation (see
Operation with batteries), no CO2 measurement can be carried
out when the battery voltage is low. Instead of the measured
CO2 value, the indication LO will appear on the display. In this
case, replace the batteries immediately.
Info
Changing the batteries while the device is not supplied
with electricity will cause a loss of the settings. Before
changing the batteries, connect the device to a power
source via the USB cable, in order to prevent the
settings from being deleted when the batteries are
changed.
Carry out the battery change as described in the Operation with
batteries chapter.
Cleaning
Clean the device with a soft, damp and lint-free cloth. Make
sure 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.
Disposal
Always dispose of packing materials in an environmentally
friendly manner and in accordance with the applicable local
disposal regulations.
The icon with the crossed-out waste bin on waste
electrical or electronic equipment is taken from Directive
2012/19/EU. It states that this device 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. You can also find out
about other return options that apply for many EU countries on
the website https://hub.trotec.com/?id=45090. Otherwise,
please contact an official recycling centre for electronic and
electrical equipment authorised for your country.
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.
Only for United Kingdom
According to Waste Electrical and Electronic Equipment
Regulations 2013 (SI2013/3113) (as amended) devices that are
no longer usable must be collected separately and disposed of
in an environmentally friendly manner.

Trotec GmbH
Grebbener Str. 7
D-52525 Heinsberg
[phone]
[phone]
[email protected]
www.trotec.com